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  • Cell Line  (77)
  • *Ecosystem
  • Phosphorylation
  • American Association for the Advancement of Science (AAAS)  (110)
  • American Meteorological Society
  • MDPI Publishing
  • 1995-1999  (110)
  • 1995  (110)
Collection
Publisher
  • American Association for the Advancement of Science (AAAS)  (110)
  • American Meteorological Society
  • MDPI Publishing
  • Springer  (3)
  • Wiley-Blackwell  (3)
Years
  • 1995-1999  (110)
Year
  • 1
    Publication Date: 1995-07-07
    Description: Human T cell lymphotropic virus I (HTLV-I) is the etiological agent for adult T cell leukemia and tropical spastic paraparesis (also termed HTLV-I-associated myelopathy). HTLV-I-infected peripheral blood T cells exhibit an initial phase of interleukin-2 (IL-2)-dependent growth; over time, by an unknown mechanism, the cells become IL-2-independent. Whereas the Jak kinases Jak1 and Jak3 and the signal transducer and activator of transcription proteins Stat3 and Stat5 are activated in normal T cells in response to IL-2, this signaling pathway was constitutively activated in HTLV-I-transformed cells. In HTLV-I-infected cord blood lymphocytes, the transition from IL-2-dependent to IL-2-independent growth correlated with the acquisition of a constitutively activated Jak-STAT pathway, which suggests that this pathway participates in HTLV-I-mediated T cell transformation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Migone, T S -- Lin, J X -- Cereseto, A -- Mulloy, J C -- O'Shea, J J -- Franchini, G -- Leonard, W J -- New York, N.Y. -- Science. 1995 Jul 7;269(5220):79-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Immunology, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7604283" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cell Line, Transformed ; *Cell Transformation, Viral ; Cells, Cultured ; DNA-Binding Proteins/*metabolism ; Enzyme Activation ; Fetal Blood/cytology ; Human T-lymphotropic virus 1/*physiology ; Humans ; Interleukin-2/pharmacology ; Janus Kinase 1 ; Janus Kinase 3 ; *Milk Proteins ; Molecular Sequence Data ; Phosphorylation ; Protein-Tyrosine Kinases/*metabolism ; Receptors, Interleukin-2/metabolism ; STAT3 Transcription Factor ; STAT5 Transcription Factor ; Signal Transduction ; T-Lymphocytes/metabolism/*virology ; Trans-Activators/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-07-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aitken, R J -- New York, N.Y. -- Science. 1995 Jul 7;269(5220):39-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Reproductive Biology Unit, Medical Research Council, Edinburgh, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7604276" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Egg Proteins/*metabolism ; Female ; Humans ; Lectins/metabolism ; Male ; Membrane Glycoproteins/*metabolism ; Mice ; Phosphorylation ; Proto-Oncogene Proteins ; Receptor Protein-Tyrosine Kinases/*metabolism ; Receptors, Cell Surface/*metabolism ; Sperm-Ovum Interactions/*physiology ; Spermatozoa/metabolism ; Zona Pellucida/*metabolism
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 1995-07-14
    Description: CD1 molecules are distantly related to the major histocompatibility complex (MHC) class I proteins. They are of unknown function. Screening random peptide phage display libraries with soluble empty mouse CD1 (mCD1) identified a peptide binding motif. It consists of three anchor positions occupied by aromatic or bulky hydrophobic amino acids. Equilibrium binding studies demonstrated that mCD1 binds peptides containing the appropriate motif with relatively high affinity. However, in contrast to classical MHC class I molecules, strong binding to mCD1 required relatively long peptides. Peptide-specific, mCD1-restricted T cell responses can be raised, which suggests that the findings are of immunological significance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Castano, A R -- Tangri, S -- Miller, J E -- Holcombe, H R -- Jackson, M R -- Huse, W D -- Kronenberg, M -- Peterson, P A -- New York, N.Y. -- Science. 1995 Jul 14;269(5221):223-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7542403" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Antigen Presentation ; Antigens, CD/chemistry/*immunology/metabolism ; Antigens, CD1 ; Cell Line ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Peptides/chemistry/*immunology/metabolism ; T-Lymphocytes, Cytotoxic/*immunology ; Transfection
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  • 4
    Publication Date: 1995-09-01
    Description: Eukaryotic chromosomes are capped with repetitive telomere sequences that protect the ends from damage and rearrangements. Telomere repeats are synthesized by telomerase, a ribonucleic acid (RNA)-protein complex. Here, the cloning of the RNA component of human telomerase, termed hTR, is described. The template region of hTR encompasses 11 nucleotides (5'-CUAACCCUAAC) complementary to the human telomere sequence (TTAGGG)n. Germline tissues and tumor cell lines expressed more hTR than normal somatic cells and tissues, which have no detectable telomerase activity. Human cell lines that expressed hTR mutated in the template region generated the predicted mutant telomerase activity. HeLa cells transfected with an antisense hTR lost telomeric DNA and began to die after 23 to 26 doublings. Thus, human telomerase is a critical enzyme for the long-term proliferation of immortal tumor cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Feng, J -- Funk, W D -- Wang, S S -- Weinrich, S L -- Avilion, A A -- Chiu, C P -- Adams, R R -- Chang, E -- Allsopp, R C -- Yu, J -- AG09383/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1995 Sep 1;269(5228):1236-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geron Corporation, Menlo Park, CA 94025, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7544491" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Death ; *Cell Division ; Cell Line ; Cloning, Molecular ; DNA Nucleotidylexotransferase/antagonists & ; inhibitors/chemistry/genetics/*metabolism ; HeLa Cells ; Humans ; Molecular Sequence Data ; Oligonucleotides, Antisense/pharmacology ; Polymerase Chain Reaction ; RNA/chemistry/genetics/*metabolism ; Templates, Genetic ; Transfection ; Tumor Cells, Cultured
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  • 5
    Publication Date: 1995-11-03
    Description: The human beta-globin locus control region (LCR) controls the transcription, chromatin structure, and replication timing of the entire locus. DNA replication was found to initiate in a transcription-independent manner within a region located 50 kilobases downstream of the LCR in human, mouse, and chicken cells containing the entire human beta-globin locus. However, DNA replication did not initiate within a deletion mutant locus lacking the sequences that encompass the LCR. This mutant locus replicated in the 3' to 5' direction. Thus, interactions between distantly separated sequences can be required for replication initiation, and factors mediating this interaction appear to be conserved in evolution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aladjem, M I -- Groudine, M -- Brody, L L -- Dieken, E S -- Fournier, R E -- Wahl, G M -- Epner, E M -- New York, N.Y. -- Science. 1995 Nov 3;270(5237):815-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Gene Expression Laboratory, Salk Institute, San Diego, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7481774" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Biological Evolution ; Cell Line ; Chickens ; *DNA Replication ; Globins/*genetics ; Humans ; Hybrid Cells ; Mice ; Molecular Sequence Data ; *Regulatory Sequences, Nucleic Acid ; Sequence Deletion ; Tumor Cells, Cultured
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  • 6
    Publication Date: 1995-03-31
    Description: Members of the interleukin-6 family of cytokines bind to and activate receptors that contain a common subunit, gp130. This leads to the activation of Stat3 and Stat1, two cytoplasmic signal transducers and activators of transcription (STATs), by tyrosine phosphorylation. Serine phosphorylation of Stat3 was constitutive and was enhanced by signaling through gp130. In cells of lymphoid and neuronal origins, inhibition of serine phosphorylation prevented the formation of complexes of DNA with Stat3-Stat3 but not with Stat3-Stat1 or Stat1-Stat1 dimers. In vitro serine dephosphorylation of Stat3 also inhibited DNA binding of Stat3-Stat3. The requirement of serine phosphorylation for Stat3-Stat3.DNA complex formation was inversely correlated with the affinity of Stat3-Stat3 for the binding site. Thus, serine phosphorylation appears to enhance or to be required for the formation of stable Stat3-Stat3.DNA complexes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, X -- Blenis, J -- Li, H C -- Schindler, C -- Chen-Kiang, S -- CA46595/CA/NCI NIH HHS/ -- HL 21006/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1995 Mar 31;267(5206):1990-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Brookdale Center for Molecular Biology, Mount Sinai School of Medicine, New York, NY 10029, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7701321" target="_blank"〉PubMed〈/a〉
    Keywords: 1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine ; Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Cell Nucleus/metabolism ; Ciliary Neurotrophic Factor ; Cytoplasm/metabolism ; DNA/metabolism ; DNA-Binding Proteins/*metabolism ; Humans ; Interleukin-6/metabolism/*pharmacology ; Isoquinolines/pharmacology ; Mice ; Molecular Sequence Data ; Nerve Tissue Proteins/pharmacology ; Phosphorylation ; Piperazines/pharmacology ; *Promoter Regions, Genetic ; STAT1 Transcription Factor ; STAT3 Transcription Factor ; Serine/*metabolism ; Signal Transduction ; Threonine/metabolism ; Trans-Activators/*metabolism ; Tumor Cells, Cultured ; Tyrosine/metabolism
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  • 7
    Publication Date: 1995-12-22
    Description: A physical map has been constructed of the human genome containing 15,086 sequence-tagged sites (STSs), with an average spacing of 199 kilobases. The project involved assembly of a radiation hybrid map of the human genome containing 6193 loci and incorporated a genetic linkage map of the human genome containing 5264 loci. This information was combined with the results of STS-content screening of 10,850 loci against a yeast artificial chromosome library to produce an integrated map, anchored by the radiation hybrid and genetic maps. The map provides radiation hybrid coverage of 99 percent and physical coverage of 94 percent of the human genome. The map also represents an early step in an international project to generate a transcript map of the human genome, with more than 3235 expressed sequences localized. The STSs in the map provide a scaffold for initiating large-scale sequencing of the human genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hudson, T J -- Stein, L D -- Gerety, S S -- Ma, J -- Castle, A B -- Silva, J -- Slonim, D K -- Baptista, R -- Kruglyak, L -- Xu, S H -- Hu, X -- Colbert, A M -- Rosenberg, C -- Reeve-Daly, M P -- Rozen, S -- Hui, L -- Wu, X -- Vestergaard, C -- Wilson, K M -- Bae, J S -- Maitra, S -- Ganiatsas, S -- Evans, C A -- DeAngelis, M M -- Ingalls, K A -- Nahf, R W -- Horton, L T Jr -- Anderson, M O -- Collymore, A J -- Ye, W -- Kouyoumjian, V -- Zemsteva, I S -- Tam, J -- Devine, R -- Courtney, D F -- Renaud, M T -- Nguyen, H -- O'Connor, T J -- Fizames, C -- Faure, S -- Gyapay, G -- Dib, C -- Morissette, J -- Orlin, J B -- Birren, B W -- Goodman, N -- Weissenbach, J -- Hawkins, T L -- Foote, S -- Page, D C -- Lander, E S -- HG00017/HG/NHGRI NIH HHS/ -- HG00098/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 1995 Dec 22;270(5244):1945-54.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead-MIT Center for Genome Research, Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8533086" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; *Chromosome Mapping ; Chromosomes, Artificial, Yeast ; Databases, Factual ; Gene Expression ; Genetic Markers ; *Genome, Human ; *Human Genome Project ; Humans ; Hybrid Cells ; Polymerase Chain Reaction ; *Sequence Analysis, DNA ; *Sequence Tagged Sites
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  • 8
    Publication Date: 1995-05-26
    Description: Receptor-mediated activation of heterotrimeric guanine nucleotide-binding proteins (G proteins) results in the dissociation of alpha from beta gamma subunits, thereby allowing both to regulate effectors. Little is known about the regions of effectors required for recognition of G beta gamma. A peptide encoding residues 956 to 982 of adenylyl cyclase 2 specifically blocked G beta gamma stimulation of adenylyl cyclase 2, phospholipase C-beta 3, potassium channels, and beta-adrenergic receptor kinase as well as inhibition of calmodulin-stimulated adenylyl cyclases, but had no effect on interactions between G beta gamma and G alpha o. Substitutions in this peptide identified a functionally important motif, Gln-X-X-Glu-Arg, that is also conserved in regions of potassium channels and beta-adrenergic receptor kinases that participate in G beta gamma interactions. Thus, the region defined by residues 956 to 982 of adenylyl cyclase 2 may contain determinants important for receiving signals from G beta gamma.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, J -- DeVivo, M -- Dingus, J -- Harry, A -- Li, J -- Sui, J -- Carty, D J -- Blank, J L -- Exton, J H -- Stoffel, R H -- CA-44998/CA/NCI NIH HHS/ -- DK-37219/DK/NIDDK NIH HHS/ -- DK-38761/DK/NIDDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1995 May 26;268(5214):1166-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Mount Sinai School of Medicine, City University of New York, NY 10029, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7761832" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclase Inhibitors ; Adenylyl Cyclases/*chemistry/metabolism ; Amino Acid Sequence ; Animals ; Cell Line ; Enzyme Activation/physiology ; GTP-Binding Proteins/chemistry/*physiology ; Guanosine Triphosphate/physiology ; In Vitro Techniques ; Molecular Sequence Data ; Peptide Fragments/chemical synthesis/chemistry/physiology ; Potassium Channels/physiology ; Rats ; Receptor Protein-Tyrosine Kinases/metabolism ; Receptors, Adrenergic, beta/metabolism ; Signal Transduction/physiology ; Structure-Activity Relationship ; Type C Phospholipases/metabolism
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  • 9
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-09-08
    Description: TNF receptor-associated factor (TRAF) proteins are candidate signal transducers that associate with the cytoplasmic domains of members of the tumor necrosis factor (TNF) receptor superfamily. The role of TRAFs in the TNF-R2 and CD40 signal transduction pathways, which result in the activation of transcription factor NF-kappa B, was investigated. Overexpression of TRAF2, but not TRAF1 or TRAF3, was sufficient to induce NF-kappa B activation. A truncated derivative of TRAF2 lacking an amino-terminal RING finger domain was a dominant-negative inhibitor of NF-kappa B activation mediated by TNF-R2 and CD40. Thus, TRAF2 is a common mediator of TNF-R2 and CD40 signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rothe, M -- Sarma, V -- Dixit, V M -- Goeddel, D V -- CA64803/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1995 Sep 8;269(5229):1424-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Biology Department, Tularik, Inc., South San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7544915" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/*metabolism ; Antigens, CD40 ; Antigens, Differentiation, B-Lymphocyte/*metabolism ; Cell Line ; Gene Expression Regulation ; Genes, Reporter ; Mice ; NF-kappa B/*metabolism ; Proteins/*metabolism ; Receptors, Tumor Necrosis Factor/*metabolism ; Receptors, Tumor Necrosis Factor, Type I ; Receptors, Tumor Necrosis Factor, Type II ; *Signal Transduction ; T-Lymphocytes/metabolism ; TNF Receptor-Associated Factor 2 ; Transfection
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  • 10
    Publication Date: 1995-01-20
    Description: Although biochemical experiments suggest that rhodopsin and other receptors coupled to heterotrimeric guanosine triphosphate-binding proteins (G proteins) are inactivated by phosphorylation near the carboxyl (COOH)-terminus and the subsequent binding of a capping protein, little is known about the quenching process in vivo. Flash responses were recorded from rods of transgenic mice in which a fraction of the rhodopsin molecules lacked the COOH-terminal phosphorylation sites. In the single photon regime, abnormally prolonged responses, attributed to activation of individual truncated rhodopsins, occurred interspersed with normal responses. The occurrence of the prolonged responses suggests that phosphorylation is required for normal shutoff. Comparison of normal and prolonged single photon responses indicated that rhodopsin begins to be quenched before the peak of the electrical response and that quenching limits the response amplitude.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, J -- Makino, C L -- Peachey, N S -- Baylor, D A -- Simon, M I -- AG12288/AG/NIA NIH HHS/ -- EY0570/EY/NEI NIH HHS/ -- F32 EY06405/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1995 Jan 20;267(5196):374-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology, California Institute of Technology, Pasadena, CA 91125.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7824934" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Electroretinography ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Phosphorylation ; Photic Stimulation ; Retinal Rod Photoreceptor Cells/metabolism/*physiology ; Rhodopsin/chemistry/genetics/*metabolism
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  • 11
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-10-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roush, W -- New York, N.Y. -- Science. 1995 Oct 27;270(5236):578-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7570013" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacillus subtilis/cytology/genetics/*physiology ; Bacterial Proteins/*metabolism/*physiology ; Cell Division ; Chlorophyta/cytology ; *Cytoskeletal Proteins ; *Drosophila Proteins ; Drosophila melanogaster/cytology ; Genes, Bacterial ; Juvenile Hormones/physiology ; Nerve Tissue Proteins/physiology ; Neurons/cytology ; Nuclear Proteins/physiology ; Phosphorylation ; Sigma Factor/*metabolism ; Spores, Bacterial/genetics/*physiology ; *Transcription Factors
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  • 12
    Publication Date: 1995-11-03
    Description: The BRCA1 gene product was identified as a 220-kilodalton nuclear phosphoprotein in normal cells, including breast ductal epithelial cells, and in 18 of 20 tumor cell lines derived from tissues other than breast and ovary. In 16 of 17 breast and ovarian cancer lines and 17 of 17 samples of cells obtained from malignant effusions, however, BRCA1 localized mainly in cytoplasm. Absence of BRCA1 or aberrant subcellular location was also observed to a variable extent in histological sections of many breast cancer biopsies. These findings suggest that BRCA1 abnormalities may be involved in the pathogenesis of many breast cancers, sporadic as well as familial.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Y -- Chen, C F -- Riley, D J -- Allred, D C -- Chen, P L -- Von Hoff, D -- Osborne, C K -- Lee, W H -- CA58318/CA/NCI NIH HHS/ -- EY05758/EY/NEI NIH HHS/ -- P50CA58183/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1995 Nov 3;270(5237):789-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Molecular Medicine/Institute of Biotechnology, University of Texas Health Science Center at San Antonio 78245, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7481765" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; BRCA1 Protein ; Base Sequence ; Breast/*chemistry ; Breast Neoplasms/*chemistry/ultrastructure ; Cell Fractionation ; Cell Line ; Cell Nucleus/chemistry ; Cytoplasm/*chemistry ; Female ; Humans ; Male ; Molecular Sequence Data ; Mutation ; Neoplasm Proteins/*analysis/genetics/metabolism ; Neoplasms/chemistry/ultrastructure ; Ovarian Neoplasms/chemistry/ultrastructure ; Pleural Effusion, Malignant/chemistry/pathology ; Transcription Factors/*analysis/genetics/metabolism ; Tumor Cells, Cultured
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  • 13
    Publication Date: 1995-08-11
    Description: Cystic fibrosis transmembrane regulator (CFTR), the gene product that is mutated in cystic fibrosis (CF) patients, has a well-recognized function as a cyclic adenosine 3',5'-monophosphate (cAMP)-regulated chloride channel, but this property does not account for the abnormally high basal rate and cAMP sensitivity of sodium ion absorption in CF airway epithelia. Expression of complementary DNAs for rat epithelial Na+ channel (rENaC) alone in Madin Darby canine kidney (MDCK) epithelial cells generated large amiloride-sensitive sodium currents that were stimulated by cAMP, whereas coexpression of human CFTR with rENaC generated smaller basal sodium currents that were inhibited by cAMP. Parallel studies that measured regulation of sodium permeability in fibroblasts showed similar results. In CF airway epithelia, the absence of this second function of CFTR as a cAMP-dependent regulator likely accounts for abnormal sodium transport.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stutts, M J -- Canessa, C M -- Olsen, J C -- Hamrick, M -- Cohn, J A -- Rossier, B C -- Boucher, R C -- CFF R026/PHS HHS/ -- HL 34322/HL/NHLBI NIH HHS/ -- HL 42384/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1995 Aug 11;269(5225):847-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cystic Fibrosis/Pulmonary Research and Treatment Center, University of North Carolina at Chapel Hill 27599-7020, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7543698" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Absorption ; Amiloride/pharmacology ; Animals ; Cell Line ; Cell Membrane Permeability ; Chloride Channels/metabolism ; Cyclic AMP/*metabolism ; Cystic Fibrosis/*metabolism ; Cystic Fibrosis Transmembrane Conductance Regulator ; DNA, Complementary ; Dogs ; Humans ; Membrane Proteins/*metabolism ; Mice ; Patch-Clamp Techniques ; Rats ; Sodium/metabolism ; Sodium Channels/*metabolism ; Transfection
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  • 14
    Publication Date: 1995-07-28
    Description: CD5 is a transmembrane protein that is expressed on the surface of T cells and a subset of B cells. The absence of CD5 rendered thymocytes hyperresponsive to stimulation through the T cell antigen receptor (TCR) in vitro. Selection of T cells expressing three distinct transgenic TCRs was also abnormal in CD5-deficient mice. These observations indicate that CD5 can influence the fate of developing thymocytes by acting as a negative regulator of TCR-mediated signal transduction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tarakhovsky, A -- Kanner, S B -- Hombach, J -- Ledbetter, J A -- Muller, W -- Killeen, N -- Rajewsky, K -- New York, N.Y. -- Science. 1995 Jul 28;269(5223):535-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Genetics, University of Cologne, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7542801" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/*immunology ; Antigens, CD3/metabolism ; Antigens, CD5 ; Female ; *Lymphocyte Activation ; Male ; Mice ; Mice, Transgenic ; Phosphorylation ; Protein-Tyrosine Kinases/metabolism ; Receptors, Antigen, T-Cell/*immunology ; *Signal Transduction ; T-Lymphocyte Subsets/immunology ; T-Lymphocytes/*immunology ; Thymus Gland/immunology ; ZAP-70 Protein-Tyrosine Kinase
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  • 15
    Publication Date: 1995-03-10
    Description: RNA encoding the B subunit of the alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) subtype of ionotropic glutamate receptor (GluR-B) undergoes a posttranscriptional modification in which a genomically encoded adenosine is represented as a guanosine in the GluR-B complementary DNA. In vitro editing of GluR-B RNA transcripts with HeLa cell nuclear extracts was found to result from an activity that converts adenosine to inosine in regions of double-stranded RNA by enzymatic base modification. This activity is consistent with that of a double-stranded RNA-specific adenosine deaminase previously described in Xenopus oocytes and widely distributed in mammalian tissues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rueter, S M -- Burns, C M -- Coode, S A -- Mookherjee, P -- Emeson, R B -- ES00267/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1995 Mar 10;267(5203):1491-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232-6600.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7878468" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/*metabolism ; Animals ; Base Sequence ; Cell Line ; Codon ; Exons ; HeLa Cells ; Humans ; Inosine/*metabolism ; Inosine Monophosphate/metabolism ; Mice ; Molecular Sequence Data ; *RNA Editing ; RNA Precursors/metabolism ; RNA, Double-Stranded/metabolism ; Rats ; Receptors, AMPA/*genetics ; Repetitive Sequences, Nucleic Acid ; Tumor Cells, Cultured
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  • 16
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-03-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ingram, V M -- New York, N.Y. -- Science. 1995 Mar 31;267(5206):1889-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7741944" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Alzheimer Disease/*metabolism ; Humans ; Neurofibrillary Tangles/*metabolism ; Phosphorylation ; Protein Kinases/metabolism ; tau Proteins/*metabolism
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  • 17
    Publication Date: 1995-11-17
    Description: A member of the inwardly rectifying potassium channel family was cloned here. The channel, called BIR (Kir6.2), was expressed in large amounts in rat pancreatic islets and glucose-responsive insulin-secreting cell lines. Coexpression with the sulfonylurea receptor SUR reconstituted an inwardly rectifying potassium conductance of 76 picosiemens that was sensitive to adenosine triphosphate (ATP) (IKATP) and was inhibited by sulfonylureas and activated by diazoxide. The data indicate that these pancreatic beta cell potassium channels are a complex composed of at least two subunits--BIR, a member of the inward rectifier potassium channel family, and SUR, a member of the ATP-binding cassette superfamily. Gene mapping data show that these two potassium channel subunit genes are clustered on human chromosome 11 at position 11p15.1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Inagaki, N -- Gonoi, T -- Clement, J P 4th -- Namba, N -- Inazawa, J -- Gonzalez, G -- Aguilar-Bryan, L -- Seino, S -- Bryan, J -- DK44311/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1995 Nov 17;270(5239):1166-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Medicine, Chiba University School of Medicine, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7502040" target="_blank"〉PubMed〈/a〉
    Keywords: *ATP-Binding Cassette Transporters ; Adenosine Triphosphate/pharmacology ; Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Chromosome Mapping ; Chromosomes, Human, Pair 11 ; Cloning, Molecular ; Cricetinae ; Diazoxide/pharmacology ; Humans ; Islets of Langerhans/metabolism ; KATP Channels ; Mice ; Molecular Sequence Data ; Potassium/*metabolism ; Potassium Channels/*chemistry/genetics/*metabolism ; *Potassium Channels, Inwardly Rectifying ; Rats ; Receptors, Drug/*chemistry/metabolism ; Rubidium/metabolism ; Sulfonylurea Compounds/pharmacology ; Sulfonylurea Receptors
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  • 18
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-01-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1995 Jan 13;267(5195):177-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7809622" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Membrane/*chemistry ; Cloning, Molecular ; Glycosylation ; Models, Molecular ; Phosphorylation ; Receptors, Glutamate/*chemistry/genetics
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  • 19
    Publication Date: 1995-04-21
    Description: Fibroblast growth factors (FGFs) require a polysaccharide cofactor, heparin or heparan sulfate (HS), for receptor binding and activation. To probe the molecular mechanism by which heparin or HS (heparin/HS) activates FGF, small nonsulfated oligosaccharides found within heparin/HS were assayed for activity. These synthetic and isomerically pure compounds can activate the FGF signaling pathway. The crystal structures of complexes between FGF and these heparin/HS oligosaccharides reveal several binding sites on FGF and constrain possible mechanisms by which heparin/HS can activate the FGF receptor. These studies establish a framework for the molecular design of compounds capable of modulating FGF activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ornitz, D M -- Herr, A B -- Nilsson, M -- Westman, J -- Svahn, C M -- Waksman, G -- CA60673/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1995 Apr 21;268(5209):432-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Pharmacology, Washington University Medical School, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7536345" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Carbohydrate Sequence ; Cell Line ; Crystallization ; Fibroblast Growth Factor 1/chemistry/*metabolism ; Fibroblast Growth Factor 2/*metabolism ; Heparin/metabolism/*pharmacology ; Heparitin Sulfate/chemistry/*pharmacology ; Mitogens/pharmacology ; Molecular Sequence Data ; Oligosaccharides/chemistry/metabolism/*pharmacology ; Receptors, Fibroblast Growth Factor/*metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction
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  • 20
    Publication Date: 1995-02-17
    Description: Although the myogenic regulator MyoD is expressed in proliferating myoblasts, differentiation of these cells is limited to the G0 phase of the cell cycle. Forced expression of cyclin D1, but not cyclins A, B, or E, inhibited the ability of MyoD to transactivate muscle-specific genes and correlated with phosphorylation of MyoD. Transfection of myoblasts with cyclin-dependent kinase (Cdk) inhibitors p21 and p16 augmented muscle-specific gene expression in cells maintained in high concentrations of serum, suggesting that an active cyclin-Cdk complex suppresses MyoD function in proliferating cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Skapek, S X -- Rhee, J -- Spicer, D B -- Lassar, A B -- 1F32AR08214-01A1/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Feb 17;267(5200):1022-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7863328" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carrier Proteins/biosynthesis/physiology ; Cell Cycle ; Cell Differentiation ; Cell Line ; Cyclin D1 ; Cyclin-Dependent Kinase Inhibitor p16 ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclin-Dependent Kinases/*metabolism ; Cyclins/biosynthesis/*physiology ; Enzyme Activation ; Mice ; Muscle, Skeletal/*cytology/metabolism ; MyoD Protein/*antagonists & inhibitors/metabolism ; Oncogene Proteins/*physiology ; Phosphorylation ; Transcriptional Activation ; Transfection
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  • 21
    Publication Date: 1995-03-03
    Description: Many members of the cytokine receptor superfamily initiate intracellular signaling by activating members of the Jak family of tyrosine kinases. Activation of the same Jaks by multiple cytokines raises the question of how these cytokines activate distinct intracellular signaling pathways. Selection of particular substrates--the transcriptional activator Stat3 and protein tyrosine phosphatase PTP1D--that characterize responses to the ciliary neurotrophic factor-interleukin-6 cytokine family depended not on which Jak was activated, but was instead determined by specific tyrosine-based motifs in the receptor components--gp130 and LIFR--shared by these cytokines. Further, these tyrosine-based motifs were modular, because addition of a Stat3-specifying motif to another cytokine receptor, that for erythropoietin, caused it to activate Stat3 in a ligand-dependent fashion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stahl, N -- Farruggella, T J -- Boulton, T G -- Zhong, Z -- Darnell, J E Jr -- Yancopoulos, G D -- New York, N.Y. -- Science. 1995 Mar 3;267(5202):1349-53.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Regeneron Pharmaceuticals, Inc., Tarrytown, NY 10591.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7871433" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Antigens, CD ; Cell Line ; Cytokine Receptor gp130 ; DNA-Binding Proteins/*metabolism ; *Growth Inhibitors ; Interleukin-6/pharmacology ; Intracellular Signaling Peptides and Proteins ; Leukemia Inhibitory Factor ; *Lymphokines ; Membrane Glycoproteins/chemistry/*metabolism ; Molecular Sequence Data ; Phosphorylation ; Point Mutation ; Protein Tyrosine Phosphatase, Non-Receptor Type 11 ; Protein Tyrosine Phosphatase, Non-Receptor Type 6 ; Protein Tyrosine Phosphatases/metabolism ; Protein-Tyrosine Kinases/*metabolism ; Receptors, Cytokine/chemistry/*metabolism ; Receptors, OSM-LIF ; Recombinant Fusion Proteins/metabolism ; STAT3 Transcription Factor ; *Signal Transduction ; Trans-Activators/*metabolism ; Tyrosine/metabolism
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  • 22
    Publication Date: 1995-10-27
    Description: Cell fate is determined by cell-specific activation of transcription factor sigma F after asymmetric division during sporulation by Bacillus subtilis. The activity of sigma F is governed by SpoIIAA, SpoIIAB, and SpoIIE, a membrane protein localized at the polar septum. SpoIIAB binds to and inhibits sigma F, and SpoIIAA inhibits SpoIIAB, which prevents SpoIIAB from binding to sigma F. SpoIIAB is also a serine kinase that inactivates SpoIIAA. Here, it is demonstrated that SpoIIE dephosphorylates SpoIIAA-P and overcomes SpoIIAB-mediated inhibition of sigma F. The finding that SpoIIE is a serine phosphatase links asymmetric division to the pathway governing cell-specific gene transcription.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Duncan, L -- Alper, S -- Arigoni, F -- Losick, R -- Stragier, P -- GM18568/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Oct 27;270(5236):641-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7570023" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Amino Acid Sequence ; Bacillus subtilis/cytology/genetics/*physiology ; Bacterial Proteins/antagonists & inhibitors/*metabolism ; Cell Division ; Molecular Sequence Data ; Phosphoprotein Phosphatases/*metabolism ; Phosphorylation ; Recombinant Fusion Proteins/metabolism ; Sigma Factor/antagonists & inhibitors/*metabolism ; Spores, Bacterial/*physiology ; *Transcription Factors ; *Transcription, Genetic
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  • 23
    Publication Date: 1995-09-01
    Description: A mutated cyclin-dependent kinase 4 (CDK4) was identified as a tumor-specific antigen recognized by HLA-A2. 1-restricted autologous cytolytic T lymphocytes (CTLs) in a human melanoma. The mutated CDK4 allele was present in autologous cultured melanoma cells and metastasis tissue, but not in the patient's lymphocytes. The mutation, an arginine-to-cysteine exchange at residue 24, was part of the CDK4 peptide recognized by CTLs and prevented binding of the CDK4 inhibitor p16INK4a, but not of p21 or of p27KIP1. The same mutation was found in one additional melanoma among 28 melanomas analyzed. These results suggest that mutation of CDK4 can create a tumor-specific antigen and can disrupt the cell-cycle regulation exerted by the tumor suppressor p16INK4a.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolfel, T -- Hauer, M -- Schneider, J -- Serrano, M -- Wolfel, C -- Klehmann-Hieb, E -- De Plaen, E -- Hankeln, T -- Meyer zum Buschenfelde, K H -- Beach, D -- New York, N.Y. -- Science. 1995 Sep 1;269(5228):1281-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medizinische Klinik und Poliklinik, Johannes Gutenberg-Universitat, Mainz, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7652577" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Carrier Proteins/metabolism/*pharmacology ; *Cell Cycle Proteins ; Cell Line ; Cloning, Molecular ; Cyclin-Dependent Kinase 4 ; Cyclin-Dependent Kinase Inhibitor p15 ; Cyclin-Dependent Kinase Inhibitor p16 ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclin-Dependent Kinase Inhibitor p27 ; *Cyclin-Dependent Kinases ; Cyclins/metabolism/pharmacology ; HLA-A2 Antigen/immunology ; Humans ; Melanoma/enzymology/*immunology ; Microtubule-Associated Proteins/metabolism/pharmacology ; Molecular Sequence Data ; Point Mutation ; Polymerase Chain Reaction ; Protein-Serine-Threonine Kinases/antagonists & ; inhibitors/genetics/*immunology/metabolism ; *Proto-Oncogene Proteins ; T-Lymphocytes, Cytotoxic/*immunology ; Transfection ; Tumor Cells, Cultured ; *Tumor Suppressor Proteins
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  • 24
    Publication Date: 1995-07-21
    Description: Huntington's disease (HD) is a dominant neurodegenerative disorder caused by expansion of a CAG repeat in the gene encoding huntingtin, a protein of unknown function. To distinguish between "loss of function" and "gain of function" models of HD, the murine HD homolog Hdh was inactivated by gene targeting. Mice heterozygous for Hdh inactivation were phenotypically normal, whereas homozygosity resulted in embryonic death. Homozygotes displayed abnormal gastrulation at embryonic day 7.5 and were resorbing by day 8.5. Thus, huntingtin is critical early in embryonic development, before the emergence of the nervous system. That Hdh inactivation does not mimic adult HD neuropathology suggests that the human disease involves a gain of function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Duyao, M P -- Auerbach, A B -- Ryan, A -- Persichetti, F -- Barnes, G T -- McNeil, S M -- Ge, P -- Vonsattel, J P -- Gusella, J F -- Joyner, A L -- NS16367/NS/NINDS NIH HHS/ -- NS32765/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1995 Jul 21;269(5222):407-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Neurogenetics Unit, Massachusetts General Hospital, Charlestown 02129, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7618107" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; Ectoderm/cytology ; Embryonic and Fetal Development ; Female ; Gene Targeting ; Genotype ; Heterozygote ; Homozygote ; Humans ; Huntington Disease/*genetics ; Male ; Mesoderm/cytology ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Nerve Tissue Proteins/*genetics/physiology ; Nuclear Proteins/*genetics/physiology ; Phenotype ; Stem Cells/metabolism
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  • 25
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-01-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J -- New York, N.Y. -- Science. 1995 Jan 27;267(5197):459-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7824945" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens/immunology ; Autoimmune Diseases/immunology ; Graft Rejection ; Humans ; Ligands ; Lymphocyte Activation ; Membrane Proteins/metabolism ; Phosphorylation ; Protein-Tyrosine Kinases/metabolism ; Receptors, Antigen, T-Cell/chemistry/*immunology/metabolism ; Signal Transduction ; T-Lymphocytes/*immunology ; ZAP-70 Protein-Tyrosine Kinase
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  • 26
    Publication Date: 1995-08-04
    Description: Combinations of antiretroviral drugs that prevent or delay the appearance of drug-resistant human immunodeficiency virus-type 1 (HIV-1) mutants are urgently required. Mutants resistant to 3'-azidothymidine (AZT, zidovudine) became phenotypically sensitive in vitro by mutation of residue 184 of viral reverse transcriptase to valine, which also induced resistance to (-)2'-deoxy-3'-thiacytidine (3TC). Furthermore, AZT-3TC coresistance was not observed during extensive in vitro selection with both drugs. In vivo AZT-3TC combination therapy resulted in a markedly greater decreased in serum HIV-1 RNA concentrations than treatment with AZT alone, even though valine-184 mutants rapidly emerged. Most samples assessed from the combination group remained AZT sensitive at 24 weeks of therapy, consistent with in vitro mutation studies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Larder, B A -- Kemp, S D -- Harrigan, P R -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1995 Aug 4;269(5224):696-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Antiviral Therapeutic Research Unit, Wellcome Research Laboratories, Beckenham, Kent, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7542804" target="_blank"〉PubMed〈/a〉
    Keywords: Antiviral Agents/*pharmacology/therapeutic use ; Base Sequence ; CD4 Lymphocyte Count ; Cell Line ; Codon ; Drug Resistance, Microbial ; Drug Therapy, Combination ; HIV Infections/*drug therapy/virology ; HIV Reverse Transcriptase ; HIV-1/*drug effects/enzymology/genetics/growth & development ; HeLa Cells ; Humans ; Lamivudine ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Point Mutation ; RNA, Viral/blood ; RNA-Directed DNA Polymerase/genetics ; *Reverse Transcriptase Inhibitors ; Serial Passage ; Zalcitabine/*analogs & derivatives/pharmacology/therapeutic use ; Zidovudine/*pharmacology/therapeutic use
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  • 27
    Publication Date: 1995-03-24
    Description: Gap junctions are made up of connexin proteins, which comprise a multigene family in mammals. Targeted mutagenesis of connexin43 (Cx43), one of the most prevalent connexin proteins, showed that its absence was compatible with survival of mouse embryos to term, even though mutant cell lines showed reduced dye coupling in vitro. However, mutant embryos died at birth, as a result of a failure in pulmonary gas exchange caused by a swelling and blockage of the right ventricular outflow tract from the heart. This finding suggests that Cx43 plays an essential role in heart development but that there is functional compensation among connexins in other parts of the developing fetus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reaume, A G -- de Sousa, P A -- Kulkarni, S -- Langille, B L -- Zhu, D -- Davies, T C -- Juneja, S C -- Kidder, G M -- Rossant, J -- New York, N.Y. -- Science. 1995 Mar 24;267(5205):1831-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7892609" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Connexin 43/*genetics/*physiology ; Embryo, Mammalian/cytology ; Heart Defects, Congenital/*genetics/pathology ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Respiratory Transport/genetics ; Stem Cells ; Ventricular Outflow Obstruction/congenital/genetics
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  • 28
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-11-17
    Description: Cadherins mediate cell adhesion and are essential for normal development. Embryonic stem cells were transfected with a dominant negative N-cadherin mutant (NCAD delta) under the control of promoters active in small intestinal epithelial cells and then introduced into C57BL/6 mouse blastocysts. Analysis of adult chimeric mice revealed that expression of NCAD delta along the entire crypt-villus axis, but not in the villus epithelium alone, produced an inflammatory bowel disease resembling Crohn's disease. NCAD delta perturbed proliferation, migration, and death programs in crypts, which lead to adenomas. This model provides insights about cadherin function in an adult organ and the factors underlying inflammatory bowel disease and intestinal neoplasia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hermiston, M L -- Gordon, J I -- DK30292/DK/NIDDK NIH HHS/ -- DK39760/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1995 Nov 17;270(5239):1203-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Pharmacology, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7502046" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoma/*etiology/metabolism/pathology ; Animals ; Apoptosis ; Cadherins/biosynthesis/genetics/*physiology ; Cell Division ; Cell Line ; Cell Movement ; Chimera ; Crohn Disease/etiology/immunology/metabolism/pathology ; Immunity, Mucosal ; Inflammatory Bowel Diseases/*etiology/immunology/metabolism/pathology ; Intestinal Mucosa/immunology/metabolism/*pathology ; Intestinal Neoplasms/*etiology/metabolism/pathology ; Intestine, Small/pathology ; Jejunum/pathology ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Mutation ; Stem Cells ; Transfection
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  • 29
    Publication Date: 1995-12-22
    Description: The mitogen-activated protein kinase (MAPK) pathway is a conserved eukaryotic signaling module that converts receptor signals into various outputs. MAPK is activated through phosphorylation by MAPK kinase (MAPKK), which is first activated by MAPKK kinase (MAPKKK). A genetic selection based on a MAPK pathway in yeast was used to identify a mouse protein kinase (TAK1) distinct from other members of the MAPKKK family. TAK1 was shown to participate in regulation of transcription by transforming growth factor-beta (TGF-beta). Furthermore, kinase activity of TAK1 was stimulated in response to TGF-beta and bone morphogenetic protein. These results suggest that TAK1 functions as a mediator in the signaling pathway of TGF-beta superfamily members.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yamaguchi, K -- Shirakabe, K -- Shibuya, H -- Irie, K -- Oishi, I -- Ueno, N -- Taniguchi, T -- Nishida, E -- Matsumoto, K -- New York, N.Y. -- Science. 1995 Dec 22;270(5244):2008-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Faculty of Science, Nagoya University, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8533096" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Bone Morphogenetic Proteins ; Cell Line ; Cloning, Molecular ; Epidermal Growth Factor/pharmacology ; *Gene Expression Regulation ; Genes, Reporter ; *MAP Kinase Kinase Kinases ; Mice ; Molecular Sequence Data ; Protein-Serine-Threonine Kinases/*metabolism ; Proteins/pharmacology ; Saccharomyces cerevisiae/genetics ; *Signal Transduction ; Transfection ; Transforming Growth Factor beta/*pharmacology
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  • 30
    Publication Date: 1995-11-17
    Description: Strategies for the treatment of human immunodeficiency virus-type 1 (HIV-1) infection must contend with the obstacle of drug resistance. HIV-1 nucleocapsid protein zinc fingers are prime antiviral targets because they are mutationally intolerant and are required both for acute infection and virion assembly. Nontoxic disulfide-substituted benzamides were identified that attack the zinc fingers, inactivate cell-free virions, inhibit acute and chronic infections, and exhibit broad antiretroviral activity. The compounds were highly synergistic with other antiviral agents, and resistant mutants have not been detected. Zinc finger-reactive compounds may offer an anti-HIV strategy that restricts drug-resistance development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rice, W G -- Supko, J G -- Malspeis, L -- Buckheit, R W Jr -- Clanton, D -- Bu, M -- Graham, L -- Schaeffer, C A -- Turpin, J A -- Domagala, J -- Gogliotti, R -- Bader, J P -- Halliday, S M -- Coren, L -- Sowder, R C 2nd -- Arthur, L O -- Henderson, L E -- New York, N.Y. -- Science. 1995 Nov 17;270(5239):1194-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Antiviral Drug Mechanisms, PRI/DynCorp., National Cancer Institute-Frederick Cancer Research and Development Center, MD 21702, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7502043" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antiviral Agents/chemistry/pharmacokinetics/*pharmacology ; Benzamides/chemistry/pharmacokinetics/*pharmacology ; Biological Availability ; Capsid/chemistry/*metabolism ; *Capsid Proteins ; Cell Line ; Disulfides/chemistry/pharmacokinetics/*pharmacology ; Drug Resistance, Microbial ; Drug Synergism ; Gene Products, gag/*antagonists & inhibitors/chemistry ; HIV-1/*drug effects/physiology ; Humans ; Male ; Mice ; Molecular Sequence Data ; *Viral Proteins ; Zinc Fingers/*drug effects ; gag Gene Products, Human Immunodeficiency Virus
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  • 31
    Publication Date: 1995-02-10
    Description: Integrin receptors mediate cell adhesion, signal transduction, and cytoskeletal organization. How a single transmembrane receptor can fulfill multiple functions was clarified by comparing roles of receptor occupancy and aggregation. Integrin occupancy by monovalent ligand induced receptor redistribution, but minimal tyrosine phosphorylation signaling or cytoskeletal protein redistribution. Aggregation of integrins by noninhibitory monoclonal antibodies on beads induced intracellular accumulations of pp125FAK and tensin, as well as phosphorylation, but no accumulation of other cytoskeletal proteins such as talin. Combining antibody-mediated clustering with monovalent ligand occupancy induced accumulation of seven cytoskeletal proteins, including alpha-actinin, talin, and F-actin, thereby mimicking multivalent interactions with fibronectin or polyvalent peptides. Integrins therefore mediate a complex repertoire of functions through the distinct effects of receptor aggregation, receptor occupancy, or both together.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miyamoto, S -- Akiyama, S K -- Yamada, K M -- New York, N.Y. -- Science. 1995 Feb 10;267(5199):883-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Developmental Biology, National Institute of Dental Research, National Institutes of Health, Bethesda, MD 20892-4370.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7846531" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antibodies, Monoclonal ; Cell Adhesion Molecules/metabolism ; Cell Membrane/*metabolism ; Cells, Cultured ; Cytoskeletal Proteins/*metabolism ; Focal Adhesion Kinase 1 ; Focal Adhesion Protein-Tyrosine Kinases ; Humans ; Integrins/*physiology ; Ligands ; Microfilament Proteins/metabolism ; Molecular Sequence Data ; Oligopeptides/metabolism ; Phosphorylation ; Protein-Tyrosine Kinases/metabolism ; Signal Transduction ; Tyrosine/metabolism
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  • 32
    Publication Date: 1995-06-09
    Description: Fluorescent probes offer insight into the highly localized and rapid molecular events that underlie cell function. However, methods are required that can efficiently transform the limited signals from such probes into high-resolution images. An algorithm has now been developed that produces highly accurate images of fluorescent probe distribution inside cells with minimal light exposure and a conventional light microscope. This method provides resolution nearly four times greater than that currently available from any fluorescence microscope and was used to study several biological problems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carrington, W A -- Lynch, R M -- Moore, E D -- Isenberg, G -- Fogarty, K E -- Fay, F S -- New York, N.Y. -- Science. 1995 Jun 9;268(5216):1483-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Molecular Medicine, University of Massachusetts Medical School, Worcester 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7770772" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Animals ; Calcium Channels/analysis ; Cell Line ; Cell Physiological Phenomena ; Cells/*chemistry/*ultrastructure ; Cells, Cultured ; Fluorescence ; *Fluorescent Dyes ; Guinea Pigs ; Hexokinase/analysis ; *Image Processing, Computer-Assisted ; Light ; Microscopy, Fluorescence ; Microtubules/ultrastructure ; Muscle Proteins/analysis ; Muscle, Smooth/cytology/enzymology ; Rats ; Ryanodine Receptor Calcium Release Channel
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  • 33
    Publication Date: 1995-07-07
    Description: Cytokines and growth factors induce tyrosine phosphorylation of signal transducers and activators of transcription (STATs) that directly activate gene expression. Cells stably transformed by the Src oncogene tyrosine kinase were examined for STAT protein activation. Assays of electrophoretic mobility, DNA-binding specificity, and antigenicity indicated that Stat3 or a closely related STAT family member was constitutively activated by the Src oncoprotein. Induction of this DNA-binding activity was accompanied by tyrosine phosphorylation of Stat3 and correlated with Src transformation. These findings demonstrate that Src can activate STAT signaling pathways and raise the possibility that Stat3 contributes to oncogenesis by Src.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yu, C L -- Meyer, D J -- Campbell, G S -- Larner, A C -- Carter-Su, C -- Schwartz, J -- Jove, R -- CA55652/CA/NCI NIH HHS/ -- DK34171/DK/NIDDK NIH HHS/ -- R01 DK034171/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1995 Jul 7;269(5220):81-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor 48109, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7541555" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line, Transformed ; *Cell Transformation, Neoplastic ; DNA/*metabolism ; DNA-Binding Proteins/*metabolism ; Growth Inhibitors/pharmacology ; Interferon-gamma/pharmacology ; *Interleukin-6 ; Leukemia Inhibitory Factor ; Lymphokines/pharmacology ; Mice ; Molecular Sequence Data ; Oncogene Protein pp60(v-src)/*physiology ; Phosphorylation ; Phosphotyrosine ; STAT3 Transcription Factor ; *Signal Transduction ; Trans-Activators/*metabolism ; Tyrosine/analogs & derivatives/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 34
    Publication Date: 1995-04-21
    Description: Sulfonylureas are a class of drugs widely used to promote insulin secretion in the treatment of non-insulin-dependent diabetes mellitus. These drugs interact with the sulfonylurea receptor of pancreatic beta cells and inhibit the conductance of adenosine triphosphate (ATP)-dependent potassium (KATP) channels. Cloning of complementary DNAs for the high-affinity sulfonylurea receptor indicates that it is a member of the ATP-binding cassette or traffic ATPase superfamily with multiple membrane-spanning domains and two nucleotide binding folds. The results suggest that the sulfonylurea receptor may sense changes in ATP and ADP concentration, affect KATP channel activity, and thereby modulate insulin release.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aguilar-Bryan, L -- Nichols, C G -- Wechsler, S W -- Clement, J P 4th -- Boyd, A E 3rd -- Gonzalez, G -- Herrera-Sosa, H -- Nguy, K -- Bryan, J -- Nelson, D A -- DK41898/DK/NIDDK NIH HHS/ -- DK44311/DK/NIDDK NIH HHS/ -- HL45742/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1995 Apr 21;268(5209):423-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Baylor College of Medicine, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7716547" target="_blank"〉PubMed〈/a〉
    Keywords: *ATP-Binding Cassette Transporters ; Adenosine Diphosphate/metabolism ; Adenosine Triphosphate/metabolism ; Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Cloning, Molecular ; Cricetinae ; Insulin/*secretion ; Islets of Langerhans/*metabolism ; Molecular Sequence Data ; Phosphorylation ; Potassium Channels/chemistry/*genetics/metabolism ; *Potassium Channels, Inwardly Rectifying ; Protein Folding ; Protein Structure, Secondary ; Receptors, Drug/chemistry/*genetics/metabolism ; Sequence Alignment ; Sulfonylurea Compounds/metabolism ; Sulfonylurea Receptors ; Transfection ; Tumor Cells, Cultured
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  • 35
    Publication Date: 1995-04-14
    Description: One Ras-dependent protein kinase cascade leading from growth factor receptors to the ERK (extracellular signal-regulated kinases) subgroup of mitogen-activated protein kinases (MAPKs) is dependent on the protein kinase Raf-1, which activates the MEK (MAPK or ERK kinase) dual specificity kinases. A second protein kinase cascade leading to activation of the Jun kinases (JNKs) is dependent on MEKK (MEK kinase). A dual-specificity kinase that activates JNK, named JNKK, was identified that functions between MEKK and JNK. JNKK activated the JNKs but did not activate the ERKs and was unresponsive to Raf-1 in transfected HeLa cells. JNKK also activated another MAPK, p38 (Mpk2; the mammalian homolog of HOG1 from yeast), whose activity is regulated similarly to that of the JNKs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lin, A -- Minden, A -- Martinetto, H -- Claret, F X -- Lange-Carter, C -- Mercurio, F -- Johnson, G L -- Karin, M -- New York, N.Y. -- Science. 1995 Apr 14;268(5208):286-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, University of California-San Diego School of Medicine, La Jolla 92093-0636, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7716521" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cell Line ; Enzyme Activation ; Epidermal Growth Factor/pharmacology ; HeLa Cells ; Humans ; JNK Mitogen-Activated Protein Kinases ; MAP Kinase Kinase 4 ; *MAP Kinase Kinase Kinase 1 ; *Mitogen-Activated Protein Kinase Kinases ; *Mitogen-Activated Protein Kinases ; Molecular Sequence Data ; Phosphorylation ; Protein Kinases/chemistry/*metabolism ; Protein-Serine-Threonine Kinases/metabolism ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-raf ; Recombinant Fusion Proteins/metabolism ; Substrate Specificity ; Transfection ; p38 Mitogen-Activated Protein Kinases
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  • 36
    Publication Date: 1995-12-08
    Description: A stepwise approach for reducing the size of a polypeptide hormone, atrial natriuretic peptide (ANP), from 28 residues to 15 while retaining high biopotency is described. Systematic structural and functional analysis identified a discontinuous functional epitope for receptor binding and activation, most of which was placed onto a smaller ring (Cys6 to Cys17) that was created by repositioning the ANP native disulfide bond (Cys7 to Cys23). High affinity was subsequently restored by optimizing the remaining noncritical residues by means of phage display. Residues that flanked the mini-ring structure were then deleted in stages, and affinity losses were rectified by additional phage-sorting experiments. Thus, structural and functional data on hormones, coupled with phage display methods, can be used to shrink the hormones to moieties more amendable to small-molecule design.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, B -- Tom, J Y -- Oare, D -- Yen, R -- Fairbrother, W J -- Wells, J A -- Cunningham, B C -- New York, N.Y. -- Science. 1995 Dec 8;270(5242):1657-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Protein Engineering, Genenteeh, South San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7502074" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Atrial Natriuretic Factor/*chemistry/genetics/immunology/metabolism ; Base Sequence ; Cell Line ; Cyclic GMP/metabolism ; Epitopes ; Guanylate Cyclase/metabolism ; Models, Molecular ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Protein Conformation ; *Protein Engineering ; Receptors, Atrial Natriuretic Factor/metabolism
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  • 37
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-04-21
    Description: Fas is a cell surface receptor that controls a poorly understood signal transduction pathway that leads to cell death by means of apoptosis. A protein tyrosine phosphatase, FAP-1, capable of interacting with the cytosolic domain of Fas, was identified. The carboxyl terminal 15 amino acids of Fas are necessary and sufficient for interaction with FAP-1. FAP-1 expression is highest in tissues and cell lines that are relatively resistant to Fas-mediated cytotoxicity. Gene transfer-mediated elevations in FAP-1 partially abolished Fas-induced apoptosis in a T cell line. These findings are consistent with an inhibitory effect of FAP-1 on Fas signal transduction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sato, T -- Irie, S -- Kitada, S -- Reed, J C -- New York, N.Y. -- Science. 1995 Apr 21;268(5209):411-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉La Jolla Cancer Research Foundation, Oncogene and Tumor Suppressor Gene Program, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7536343" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD95 ; Antigens, Surface/genetics/*metabolism ; Apoptosis ; Base Sequence ; Cell Line ; Cloning, Molecular ; DNA, Complementary/genetics ; Humans ; Mice ; Molecular Sequence Data ; Protein Tyrosine Phosphatases/genetics/*metabolism ; Receptors, Cell Surface/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; T-Lymphocytes/cytology
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  • 38
    Publication Date: 1995-01-06
    Description: Specificity of protein kinases and phosphatases may be achieved through compartmentalization with preferred substrates. In neurons, adenosine 3', 5'-monophosphate (cAMP)-dependent protein kinase (PKA) is localized at postsynaptic densities by association of its regulatory subunit with an A kinase anchor protein, AKAP79. Interaction cloning experiments demonstrated that AKAP79 also binds protein phosphatase 2B, or calcineurin (CaN). A ternary complex of PKA, AKAP, and CaN was isolated from bovine brain, and colocalization of the kinase and the phosphatase was established in neurites of cultured hippocampal neurons. The putative CaN-binding domain of AKAP79 is similar to that of the immunophilin FKBP-12, and AKAP79 inhibited CaN phosphatase activity. These results suggest that both PKA and CaN are targeted to subcellular sites by association with a common anchor protein and thereby regulate the phosphorylation state of key neuronal substrates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coghlan, V M -- Perrino, B A -- Howard, M -- Langeberg, L K -- Hicks, J B -- Gallatin, W M -- Scott, J D -- DK09059/DK/NIDDK NIH HHS/ -- GM48231/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Jan 6;267(5194):108-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Vollum Institute, Oregon Health Sciences University, Portland 97201.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7528941" target="_blank"〉PubMed〈/a〉
    Keywords: A Kinase Anchor Proteins ; *Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Animals ; Binding Sites ; *Brain Chemistry ; Calcineurin ; Calmodulin-Binding Proteins/analysis/antagonists & inhibitors/*metabolism ; Carrier Proteins/analysis ; Cattle ; Cells, Cultured ; Cyclic AMP-Dependent Protein Kinases/analysis/*metabolism ; Hippocampus/chemistry ; Molecular Sequence Data ; Neurites/chemistry ; Phosphoprotein Phosphatases/analysis/antagonists & inhibitors/*metabolism ; Phosphorylation ; Proteins/*metabolism/pharmacology ; Rats ; Recombinant Proteins/pharmacology ; Tacrolimus/pharmacology
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  • 39
    Publication Date: 1995-10-13
    Description: Glucocorticoids are among the most potent anti-inflammatory and immunosuppressive agents. They inhibit synthesis of almost all known cytokines and of several cell surface molecules required for immune function, but the mechanism underlying this activity has been unclear. Here it is shown that glucocorticoids are potent inhibitors of nuclear factor kappa B (NF-kappa B) activation in mice and cultured cells. This inhibition is mediated by induction of the I kappa B alpha inhibitory protein, which traps activated NF-kappa B in inactive cytoplasmic complexes. Because NF-kappa B activates many immunoregulatory genes in response to pro-inflammatory stimuli, the inhibition of its activity can be a major component of the anti-inflammatory activity of glucocorticoids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Auphan, N -- DiDonato, J A -- Rosette, C -- Helmberg, A -- Karin, M -- New York, N.Y. -- Science. 1995 Oct 13;270(5234):286-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, School of Medicine, University of California, San Diego, La Jolla 92093-0636, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7569976" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Inflammatory Agents/*pharmacology ; Cell Line ; Cell Nucleus/metabolism ; Cytoplasm/metabolism ; DNA-Binding Proteins/*biosynthesis ; Dexamethasone/*pharmacology ; Humans ; Hybridomas ; *I-kappa B Proteins ; *Immunosuppression ; Interleukin-2/pharmacology ; Lymph Nodes/drug effects/metabolism ; Mice ; NF-kappa B/*antagonists & inhibitors/metabolism ; Receptors, Glucocorticoid/metabolism ; T-Lymphocytes/drug effects/*metabolism ; Tetradecanoylphorbol Acetate/pharmacology ; Transcription Factor AP-1/metabolism ; Transcription Factor RelA ; Tumor Cells, Cultured
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  • 40
    Publication Date: 1995-10-13
    Description: Glucocorticoids are potent immunosuppressive drugs, but their mechanism is poorly understood. Nuclear factor kappa B (NF-kappa B), a regulator of immune system and inflammation genes, may be a target for glucocorticoid-mediated immunosuppression. The activation of NF-kappa B involves the targeted degradation of its cytoplasmic inhibitor, I kappa B alpha, and the translocation of NF-kappa B to the nucleus. Here it is shown that the synthetic glucocorticoid dexamethasone induces the transcription of the I kappa B alpha gene, which results in an increased rate of I kappa B alpha protein synthesis. Stimulation by tumor necrosis factor causes the release of NF-kappa B from I kappa B alpha. However, in the presence of dexamethasone this newly released NF-kappa B quickly reassociates with newly synthesized I kappa B alpha, thus markedly reducing the amount of NF-kappa B that translocates to the nucleus. This decrease in nuclear NF-kappa B is predicted to markedly decrease cytokine secretion and thus effectively block the activation of the immune system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scheinman, R I -- Cogswell, P C -- Lofquist, A K -- Baldwin, A S Jr -- AI35098/AI/NIAID NIH HHS/ -- CA52515/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1995 Oct 13;270(5234):283-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill 27599, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7569975" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; Cell Nucleus/metabolism ; DNA-Binding Proteins/genetics/*metabolism ; Dexamethasone/*pharmacology ; HeLa Cells ; Humans ; *I-kappa B Proteins ; *Immunosuppression ; Immunosuppressive Agents/*pharmacology ; Lipopolysaccharides/pharmacology ; NF-kappa B/genetics/*metabolism ; RNA, Messenger/genetics/metabolism ; Signal Transduction/drug effects ; Transcription Factor RelA ; Transcription, Genetic/drug effects ; Tumor Necrosis Factor-alpha/pharmacology
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  • 41
    facet.materialart.
    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-12-15
    Description: Coordinate activation of transcription by multiple enhancer binding factors is essential for the regulation of pattern formation during development of Drosophila melanogaster. Cell-free transcription reactions are described that recapitulate transcriptional synergism directed by the Drosophila developmental regulators Bicoid (BCD) and Hunchback (HB). Within the basal transcription factor complex TFIID, two specific targets, TAFII110 and TAFII60, served as coactivators to mediate transcriptional activation by these two enhancer binding proteins. A quadruple complex containing TATA binding protein (TBP), TAFII250, TAFII110, and TAFII60 mediated transcriptional synergism by BCD and HB, whereas triple TBP-TAFII complexes lacking one or the other target coactivator failed to support synergistic activation. Deoxyribonuclease I footprint protection experiments revealed that an integral step leading to transcriptional synergism involves the recruitment of TBP-TAFII complexes to the promoter by way of multivalent contacts between activators and selected TAFIIs. Thus, the concerted action of multiple regulators with different coactivators helps to establish the pattern and level of segmentation gene transcription during Drosophila development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sauer, F -- Hansen, S K -- Tjian, R -- New York, N.Y. -- Science. 1995 Dec 15;270(5243):1783-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8525367" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; DNA-Binding Proteins/metabolism ; *Drosophila Proteins ; Drosophila melanogaster/embryology/genetics ; Enhancer Elements, Genetic ; *Gene Expression Regulation, Developmental ; *Homeodomain Proteins ; Insect Hormones/*genetics ; Juvenile Hormones/*genetics ; Protein Binding ; Recombinant Proteins ; TATA Box ; TATA-Box Binding Protein ; *Trans-Activators ; Transcription Factor TFIID ; Transcription Factors/*metabolism ; *Transcriptional Activation
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  • 42
    Publication Date: 1995-03-31
    Description: Channel adaptation is a fundamental feature of sarcoplasmic reticulum calcium release channels (called ryanodine receptors, RyRs). It permits successive increases in the intracellular concentration of calcium (Ca2+) to repeatedly but transiently activate channels. Adaptation of RyRs in the absence of magnesium (Mg2+) and adenosine triphosphate is an extremely slow process (taking seconds). Photorelease of Ca2+ from nitrophenyl-EGTA, a photolabile Ca2+ chelator, demonstrated that RyR adaptation is rapid (milliseconds) in canine heart muscle when physiological Mg2+ concentrations are present. Phosphorylation of the RyR by protein kinase A increased the responsiveness of the channel to Ca2+ and accelerated the kinetics of adaptation. These properties of the RyR from heart may also be relevant to other cells in which multiple agonist-dependent triggering events regulate cellular functions.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4242209/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4242209/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Valdivia, H H -- Kaplan, J H -- Ellis-Davies, G C -- Lederer, W J -- HL25675/HL/NHLBI NIH HHS/ -- HL30315/HL/NHLBI NIH HHS/ -- HL36974/HL/NHLBI NIH HHS/ -- R01 GM053395/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1995 Mar 31;267(5206):1997-2000.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, University of Maryland Medical School, Baltimore 21201, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7701323" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Adenosine Triphosphate/metabolism/pharmacology ; Animals ; Calcium/*metabolism ; Calcium Channels/drug effects/*metabolism ; Cyclic AMP-Dependent Protein Kinases/metabolism ; Dogs ; Kinetics ; Lipid Bilayers ; Magnesium/*pharmacology ; Muscle Proteins/drug effects/*metabolism ; Myocardium/*metabolism ; Phosphorylation ; Ryanodine Receptor Calcium Release Channel
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  • 43
    Publication Date: 1995-12-08
    Description: Pineal serotonin N-acetyltransferase (arylalkylamine N-acetyltransferase, or AA-NAT) generates the large circadian rhythm in melatonin, the hormone that coordinates daily and seasonal physiology in some mammals. Complementary DNA encoding ovine AA-NAT was cloned. The abundance of AA-NAT messenger RNA (mRNA) during the day was high in the ovine pineal gland and somewhat lower in retina. AA-NAT mRNA was found unexpectedly in the pituitary gland and in some brain regions. The night-to-day ratio of ovine pineal AA-NAT mRNA is less than 2. In contrast, the ratio exceeds 150 in rats. AA-NAT represents a family within a large superfamily of acetyltransferases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coon, S L -- Roseboom, P H -- Baler, R -- Weller, J L -- Namboodiri, M A -- Koonin, E V -- Klein, D C -- New York, N.Y. -- Science. 1995 Dec 8;270(5242):1681-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section on Neuroendocrinology, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7502081" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Arylamine N-Acetyltransferase/*genetics/metabolism ; Brain/metabolism ; Cell Line ; Circadian Rhythm ; *Cloning, Molecular ; DNA, Complementary/genetics ; Molecular Sequence Data ; Pineal Gland/*enzymology/metabolism ; Pituitary Gland/metabolism ; RNA, Messenger/genetics/metabolism ; Rats ; Retina/metabolism ; Sequence Alignment ; Sheep ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 44
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-11-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kazantsev, A -- Sancar, A -- 32833/PHS HHS/ -- New York, N.Y. -- Science. 1995 Nov 10;270(5238):1003-4; author reply 1005-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7481776" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; Cell-Free System ; DNA Damage ; *DNA Repair ; HeLa Cells ; Humans ; Intracellular Signaling Peptides and Proteins ; Proliferating Cell Nuclear Antigen/metabolism ; Proteins/metabolism/*pharmacology
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  • 45
    Publication Date: 1995-11-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kearsey, J M -- Shivji, M K -- Hall, P A -- Wood, R D -- New York, N.Y. -- Science. 1995 Nov 10;270(5238):1004-5; author reply 1005-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7481777" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; DNA Damage ; DNA Repair/*drug effects ; Genes, p53 ; Humans ; Intracellular Signaling Peptides and Proteins ; Proliferating Cell Nuclear Antigen/metabolism ; Proteins/metabolism/*pharmacology ; Recombinant Fusion Proteins/pharmacology
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  • 46
    Publication Date: 1995-12-22
    Description: A complementary DNA encoding a mitogen-activated protein (MAP) kinase homolog has been isolated from tobacco plants. Transcripts of the corresponding gene were not observed in healthy tobacco leaves but began to accumulate 1 minute after mechanical wounding. In tobacco plants transformed with the cloned complementary DNA, trans inactivation of the endogenous homologous gene occurred, and both production of wound-induced jasmonic acid and accumulation of wound-inducible gene transcripts were inhibited. In contrast, the levels of salicylic acid and transcripts for pathogen-inducible, acidic pathogenesis-related proteins were increased upon wounding. These results indicate that this MAP kinase is part of the initial response of higher plants to mechanical wounding.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Seo, S -- Okamoto, M -- Seto, H -- Ishizuka, K -- Sano, H -- Ohashi, Y -- New York, N.Y. -- Science. 1995 Dec 22;270(5244):1988-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Applied Biochemistry, University of Tsukuba, Ibaraki, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8533090" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Calcium-Calmodulin-Dependent Protein Kinases/chemistry/*genetics/metabolism ; Cyclopentanes/metabolism ; DNA, Complementary/genetics ; *Genes, Plant ; Molecular Sequence Data ; Oxylipins ; Phospholipases A/metabolism ; Phosphorylation ; Plant Proteins/metabolism ; Plants, Genetically Modified ; *Plants, Toxic ; Salicylates/metabolism ; Salicylic Acid ; *Signal Transduction ; Tobacco/*enzymology/genetics
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  • 47
    Publication Date: 1995-02-17
    Description: Terminal differentiation is coupled to withdrawal from the cell cycle. The cyclin-dependent kinase inhibitor (CKI) p21Cip1 is transcriptionally regulated by p53 and can induce growth arrest. CKIs are therefore potential mediators of developmental control of cell proliferation. The expression pattern of mouse p21 correlated with terminal differentiation of multiple cell lineages including skeletal muscle, cartilage, skin, and nasal epithelium in a p53-independent manner. Although the muscle-specific transcription factor MyoD is sufficient to activate p21 expression in 10T1/2 cells, p21 was expressed in myogenic cells of mice lacking the genes encoding MyoD and myogenin, demonstrating that p21 expression does not require these transcription factors. The p21 protein may function during development as an inducible growth inhibitor that contributes to cell cycle exit and differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parker, S B -- Eichele, G -- Zhang, P -- Rawls, A -- Sands, A T -- Bradley, A -- Olson, E N -- Harper, J W -- Elledge, S J -- AG-11085/AG/NIA NIH HHS/ -- AR39849/AR/NIAMS NIH HHS/ -- AR40339/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Feb 17;267(5200):1024-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX 77030.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7863329" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle ; *Cell Differentiation ; Cell Line ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclins/*biosynthesis/genetics ; Embryo, Mammalian/metabolism ; *Gene Expression Regulation, Developmental ; In Situ Hybridization ; Mice ; Mice, Inbred C57BL ; Muscle, Skeletal/*cytology/metabolism ; MyoD Protein/genetics/physiology ; Myogenin/genetics/physiology ; Tumor Suppressor Protein p53/*physiology
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  • 48
    Publication Date: 1995-07-21
    Description: The ternary complex factor (TCF) subfamily of ETS-domain transcription factors bind with serum response factor (SRF) to the serum response element (SRE) and mediate increased gene expression. The TCF protein Elk-1 is phosphorylated by the JNK and ERK groups of mitogen-activated protein (MAP) kinases causing increased DNA binding, ternary complex formation, and transcriptional activation. Activated SRE-dependent gene expression is induced by JNK in cells treated with interleukin-1 and by ERK after treatment with phorbol ester. The Elk-1 transcription factor therefore integrates MAP kinase signaling pathways in vivo to coordinate biological responses to different extracellular stimuli.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Whitmarsh, A J -- Shore, P -- Sharrocks, A D -- Davis, R J -- New York, N.Y. -- Science. 1995 Jul 21;269(5222):403-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of Massachusetts Medical School, Worcester 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7618106" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CHO Cells ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cricetinae ; DNA-Binding Proteins/*metabolism ; Gene Expression Regulation ; Interleukin-1/pharmacology ; JNK Mitogen-Activated Protein Kinases ; MAP Kinase Kinase 1 ; Mitogen-Activated Protein Kinase 1 ; Mitogen-Activated Protein Kinase 3 ; *Mitogen-Activated Protein Kinase Kinases ; *Mitogen-Activated Protein Kinases ; Nuclear Proteins/*metabolism ; Phosphorylation ; *Promoter Regions, Genetic ; Protein-Serine-Threonine Kinases/metabolism ; Protein-Tyrosine Kinases/metabolism ; Proto-Oncogene Proteins/metabolism ; Serum Response Factor ; *Signal Transduction ; Tetradecanoylphorbol Acetate/pharmacology ; Transcription Factors/metabolism ; Transfection ; ets-Domain Protein Elk-1 ; ets-Domain Protein Elk-4
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  • 49
    Publication Date: 1995-02-10
    Description: Apoptosis (programmed cell death) plays a major role in development and tissue regeneration. Basement membrane extracellular matrix (ECM), but not fibronectin or collagen, was shown to suppress apoptosis of mammary epithelial cells in tissue culture and in vivo. Apoptosis was induced by antibodies to beta 1 integrins or by overexpression of stromelysin-1, which degrades ECM. Expression of interleukin-1 beta converting enzyme (ICE) correlated with the loss of ECM, and inhibitors of ICE activity prevented apoptosis. These results suggest that ECM regulates apoptosis in mammary epithelial cells through an integrin-dependent negative regulation of ICE expression.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3004777/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3004777/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boudreau, N -- Sympson, C J -- Werb, Z -- Bissell, M J -- CA 57621/CA/NCI NIH HHS/ -- ES 07106/ES/NIEHS NIH HHS/ -- R01 CA057621/CA/NCI NIH HHS/ -- R01 CA057621-07/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1995 Feb 10;267(5199):891-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Life Sciences Division, Lawrence Berkeley Laboratory, Berkeley, CA 94720.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7531366" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD29 ; *Apoptosis ; Basement Membrane ; Caspase 1 ; Cell Line ; Collagen ; Cysteine Endopeptidases/genetics/*metabolism ; Cysteine Proteinase Inhibitors/pharmacology ; Extracellular Matrix/metabolism/*physiology ; Fibronectins ; Gene Expression Regulation, Enzymologic ; Integrins/immunology ; Mammary Glands, Animal/*cytology/enzymology ; Matrix Metalloproteinase 3 ; Metalloendopeptidases/genetics/metabolism ; Mice ; Mice, Transgenic ; RNA, Messenger/genetics/metabolism ; Transfection
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  • 50
    Publication Date: 1995-07-14
    Description: CD22 is a membrane immunoglobulin (mIg)-associated protein of B cells. CD22 is tyrosine-phosphorylated when mIg is ligated. Tyrosine-phosphorylated CD22 binds and activates SHP, a protein tyrosine phosphatase known to negatively regulate signaling through mIg. Ligation of CD22 to prevent its coaggregation with mIg lowers the threshold at which mIg activates the B cell by a factor of 100. In secondary lymphoid organs, CD22 may be sequestered away from mIg through interactions with counterreceptors on T cells. Thus, CD22 is a molecular switch for SHP that may bias mIg signaling to anatomic sites rich in T cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Doody, G M -- Justement, L B -- Delibrias, C C -- Matthews, R J -- Lin, J -- Thomas, M L -- Fearon, D T -- GM-46524/GM/NIGMS NIH HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1995 Jul 14;269(5221):242-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome Trust Immunology Unit, Department of Medicine, University of Cambridge, School of Clinical Medicine, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7618087" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD/*immunology/metabolism ; Antigens, Differentiation, B-Lymphocyte/*immunology/metabolism ; B-Lymphocytes/*immunology ; *Cell Adhesion Molecules ; Cells, Cultured ; Humans ; Immunoglobulin M/immunology ; Intracellular Signaling Peptides and Proteins ; *Lectins ; *Lymphocyte Activation ; Mice ; Molecular Sequence Data ; Phosphorylation ; Protein Tyrosine Phosphatase, Non-Receptor Type 11 ; Protein Tyrosine Phosphatase, Non-Receptor Type 6 ; Protein Tyrosine Phosphatases/*metabolism ; Recombinant Proteins/metabolism ; Sialic Acid Binding Ig-like Lectin 2 ; Signal Transduction ; Tumor Cells, Cultured
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  • 51
    Publication Date: 1995-02-17
    Description: Skeletal muscle differentiation entails the coordination of muscle-specific gene expression and terminal withdrawal from the cell cycle. This cell cycle arrest in the G0 phase requires the retinoblastoma tumor suppressor protein (Rb). The function of Rb is negatively regulated by cyclin-dependent kinases (Cdks), which are controlled by Cdk inhibitors. Expression of MyoD, a skeletal muscle-specific transcriptional regulator, activated the expression of the Cdk inhibitor p21 during differentiation of murine myocytes and in nonmyogenic cells. MyoD-mediated induction of p21 did not require the tumor suppressor protein p53 and correlated with cell cycle withdrawal. Thus, MyoD may induce terminal cell cycle arrest during skeletal muscle differentiation by increasing the expression of p21.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Halevy, O -- Novitch, B G -- Spicer, D B -- Skapek, S X -- Rhee, J -- Hannon, G J -- Beach, D -- Lassar, A B -- F32ARO8214-01A1/AR/NIAMS NIH HHS/ -- N01-HD-6-2915/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1995 Feb 17;267(5200):1018-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7863327" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Carrier Proteins ; *Cell Cycle ; *Cell Cycle Proteins ; *Cell Differentiation ; Cell Line ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclin-Dependent Kinase Inhibitor p27 ; Cyclin-Dependent Kinases/*antagonists & inhibitors ; Cyclins/*biosynthesis/genetics ; *DNA-Binding Proteins ; E2F Transcription Factors ; G0 Phase ; Humans ; Mice ; Microtubule-Associated Proteins/biosynthesis/genetics ; Muscle, Skeletal/*cytology/metabolism ; MyoD Protein/*physiology ; RNA, Messenger/genetics/metabolism ; Retinoblastoma Protein/physiology ; Retinoblastoma-Binding Protein 1 ; Transcription Factor DP1 ; Transcription Factors/metabolism ; Tumor Cells, Cultured ; Tumor Suppressor Protein p53/physiology ; *Tumor Suppressor Proteins
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  • 52
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-11-24
    Description: The assembly and transport of major histocompatibility complex (MHC) class II molecules require interaction with the invariant chain. A fragment of the invariant chain, CLIP, occupies the peptide-binding groove of the class II molecule. At endosomal pH, the binding of CLIP to human MHC class II HLA-DR molecules was counteracted by its amino-terminal segment (residues 81 to 89), which facilitated rapid release. The CLIP (81-89) fragment also catalyzed the release of CLIP(90-105) and a subset of other self-peptides, probably by transient interaction with an effector site outside the groove. Thus, CLIP may facilitate peptide loading through an allosteric release mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kropshofer, H -- Vogt, A B -- Stern, L J -- Hammerling, G J -- New York, N.Y. -- Science. 1995 Nov 24;270(5240):1357-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Immunology, German Cancer Research Center, Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7481823" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antigens, Differentiation, B-Lymphocyte/chemistry/*metabolism ; Binding Sites ; Cell Line ; HLA-DR3 Antigen/*metabolism ; Histocompatibility Antigens Class II/chemistry/*metabolism ; Humans ; Hydrogen-Ion Concentration ; Lysine/chemistry ; Molecular Sequence Data ; Peptide Fragments/metabolism ; Proline/chemistry ; Protein Conformation
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  • 53
    Publication Date: 1995-09-08
    Description: Germline mutations in the von Hippel-Lindau tumor suppressor gene (VHL) predispose individuals to a variety of tumors, including renal carcinoma, hemangioblastoma of the central nervous system, and pheochromocytoma. Here, a cellular transcription factor, Elongin (SIII), is identified as a functional target of the VHL protein. Elongin (SIII) is a heterotrimer consisting of a transcriptionally active subunit (A) and two regulatory subunits (B and C) that activate transcription elongation by RNA polymerase II. The VHL protein was shown to bind tightly and specifically to the Elongin B and C subunits and to inhibit Elongin (SIII) transcriptional activity in vitro. These findings reveal a potentially important transcriptional regulatory network in which the VHL protein may play a key role.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Duan, D R -- Pause, A -- Burgess, W H -- Aso, T -- Chen, D Y -- Garrett, K P -- Conaway, R C -- Conaway, J W -- Linehan, W M -- Klausner, R D -- GM41628/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Sep 8;269(5229):1402-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Urologic Oncology Section, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7660122" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell Line ; Cloning, Molecular ; Gene Expression Regulation ; *Genes, Tumor Suppressor ; HeLa Cells ; Humans ; *Ligases ; Molecular Sequence Data ; Mutation ; Nuclear Proteins/genetics/*metabolism ; RNA Polymerase II/metabolism ; Recombinant Proteins/metabolism ; Transcription Factors/chemistry/isolation & purification/*metabolism ; *Transcription, Genetic ; *Tumor Suppressor Proteins ; *Ubiquitin-Protein Ligases ; Von Hippel-Lindau Tumor Suppressor Protein ; von Hippel-Lindau Disease/*genetics
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  • 54
    Publication Date: 1995-02-03
    Description: Mammalian mitogen-activated protein (MAP) kinases include extracellular signal-regulated protein kinase (ERK), c-Jun amino-terminal kinase (JNK), and p38 subgroups. These MAP kinase isoforms are activated by dual phosphorylation on threonine and tyrosine. Two human MAP kinase kinases (MKK3 and MKK4) were cloned that phosphorylate and activate p38 MAP kinase. These MKK isoforms did not activate the ERK subgroup of MAP kinases, but MKK4 did activate JNK. These data demonstrate that the activators of p38 (MKK3 and MKK4), JNK (MKK4), and ERK (MEK1 and MEK2) define independent MAP kinase signal transduction pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Derijard, B -- Raingeaud, J -- Barrett, T -- Wu, I H -- Han, J -- Ulevitch, R J -- Davis, R J -- AI15136/AI/NIAID NIH HHS/ -- CA58396/CA/NCI NIH HHS/ -- GM37696/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Feb 3;267(5198):682-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, University of Massachusetts Medical School, Worcester 01605.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7839144" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cell Line ; Cloning, Molecular ; Enzyme Activation ; Humans ; JNK Mitogen-Activated Protein Kinases ; MAP Kinase Kinase 3 ; *MAP Kinase Kinase 4 ; Mitogen-Activated Protein Kinase 1 ; *Mitogen-Activated Protein Kinase Kinases ; *Mitogen-Activated Protein Kinases ; Molecular Sequence Data ; Phosphorylation ; Protein-Serine-Threonine Kinases/chemistry/*metabolism ; Protein-Tyrosine Kinases/chemistry/*metabolism ; *Signal Transduction ; Substrate Specificity ; Transfection ; p38 Mitogen-Activated Protein Kinases
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  • 55
    Publication Date: 1995-11-24
    Description: Immune evasion by the human immunodeficiency virus (HIV) is unexplained but may involve the mutation of viral antigens. When cytotoxic T lymphocytes engaged CD4-positive cells that were acutely infected with HIV bearing natural variant epitopes in reverse transcriptase, substantial inhibition of specific antiviral lysis was observed. Mutant viruses capable of these transactive effects could facilitate the persistence of a broad range of HIV variants in the face of an active and specific immune response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meier, U C -- Klenerman, P -- Griffin, P -- James, W -- Koppe, B -- Larder, B -- McMichael, A -- Phillips, R -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1995 Nov 24;270(5240):1360-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Nuffield Department of Clinical Medicine, John Radcliffe Hospital, Headington, Oxford, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7481824" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antigenic Variation ; Base Sequence ; CD4-Positive T-Lymphocytes/immunology/virology ; Cell Line ; *Cytotoxicity, Immunologic ; Epitopes/genetics ; HIV Antigens/genetics/*immunology ; HIV Reverse Transcriptase ; HIV-1/enzymology/genetics/*immunology ; HLA-B8 Antigen/immunology ; Humans ; *Immune Tolerance ; Molecular Sequence Data ; RNA-Directed DNA Polymerase/genetics/*immunology ; Receptors, Antigen, T-Cell/immunology ; T-Lymphocytes, Cytotoxic/*immunology
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  • 56
    Publication Date: 1995-07-07
    Description: A 95-kilodalton mouse sperm protein with characteristics of a protein tyrosine kinase has been identified as a receptor for ZP3, a glycoprotein in the egg's extracellular matrix. The structure of the human homolog was determined by screening an expression library from human testis; a testis-specific complementary DNA was isolated that encodes a protein similar to receptor tyrosine kinases and appears to be expressed only in testicular germ cells. Antibodies against a synthetic peptide from the intracellular domain recognized a 95-kilodalton human sperm protein that contains phosphotyrosine; human ZP3 stimulates the kinase activity of this sperm protein. Synthetic peptides corresponding to regions of the predicted extracellular domain inhibited sperm binding to human zona pellucida. Availability of the primary sequence of a receptor for ZP3 provides a rational starting point for sperm-targeted contraceptive development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burks, D J -- Carballada, R -- Moore, H D -- Saling, P M -- HD 18201/HD/NICHD NIH HHS/ -- HD 29125/HD/NICHD NIH HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1995 Jul 7;269(5220):83-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC 27710, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7541556" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Egg Proteins/*metabolism ; Female ; Humans ; Male ; Membrane Glycoproteins/*metabolism ; Mice ; Molecular Sequence Data ; Molecular Weight ; Phosphorylation ; Phosphotyrosine ; Proto-Oncogene Proteins ; Receptor Protein-Tyrosine Kinases/chemistry/genetics/*metabolism ; *Receptors, Cell Surface ; Sperm-Ovum Interactions/*physiology ; Spermatozoa/*metabolism ; Tyrosine/analogs & derivatives/metabolism ; Zona Pellucida/*metabolism
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  • 57
    Publication Date: 1995-10-13
    Description: Stimulation of rat vascular smooth muscle cells (VSMCs) by platelet-derived growth factor (PDGF) transiently increased the intracellular concentration of hydrogen peroxide (H2O2). This increase could be blunted by increasing the intracellular concentration of the scavenging enzyme catalase or by the chemical antioxidant N-acetylcysteine. The response of VSMCs to PDGF, which includes tyrosine phosphorylation, mitogen-activated protein kinase stimulation, DNA synthesis, and chemotaxis, was inhibited when the growth factor-stimulated rise in H2O2 concentration was blocked. These results suggest that H2O2 may act as a signal-transducing molecule, and they suggest a potential mechanism for the cardioprotective effects of antioxidants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sundaresan, M -- Yu, Z X -- Ferrans, V J -- Irani, K -- Finkel, T -- New York, N.Y. -- Science. 1995 Oct 13;270(5234):296-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cardiology Branch, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD 20892-1650, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7569979" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcysteine/pharmacology ; Adenoviridae/genetics/physiology ; Animals ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Catalase/metabolism ; Cell Line ; Cells, Cultured ; Chemotaxis/drug effects ; Endopeptidase K ; Free Radical Scavengers/pharmacology ; Humans ; Hydrogen Peroxide/*metabolism ; Mitogen-Activated Protein Kinase 1 ; Mitogen-Activated Protein Kinase 3 ; *Mitogen-Activated Protein Kinases ; Muscle, Smooth, Vascular/cytology/drug effects/*metabolism/virology ; Phosphorylation ; Phosphotyrosine/metabolism ; Platelet-Derived Growth Factor/*pharmacology ; Protein-Tyrosine Kinases/metabolism ; Rats ; Serine Endopeptidases/metabolism ; *Signal Transduction
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  • 58
    Publication Date: 1995-08-18
    Description: The Volga German kindreds are a group of seven related families with autosomal dominant early-onset Alzheimer's disease (AD). Linkage to known AD-related loci on chromosomes 21 and 14 has been excluded. Significant evidence for linkage to AD in these families was obtained with D1S479 and there was also positive evidence for linkage with other markers in the region. A 112-base pair allele of D1S479 co-segregated with the disease in five of seven families, which is consistent with a common genetic founder. This study demonstrates the presence of an AD locus on chromosome 1q31-42.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levy-Lahad, E -- Wijsman, E M -- Nemens, E -- Anderson, L -- Goddard, K A -- Weber, J L -- Bird, T D -- Schellenberg, G D -- AG05136/AG/NIA NIH HHS/ -- F32 AG05635/AG/NIA NIH HHS/ -- HG00835/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 1995 Aug 18;269(5226):970-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geriatric Research, Education, and Clinical Center (182B), Veterans Affairs Medical Center, Seattle, WA 98108-1597, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7638621" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Age of Onset ; Aged ; Aged, 80 and over ; Alleles ; Alzheimer Disease/ethnology/*genetics ; Cell Line ; Chromosome Mapping ; Chromosomes, Human, Pair 1/*genetics ; Female ; Genetic Markers ; Genotype ; Germany/ethnology ; Haplotypes ; Humans ; Lod Score ; Male ; Middle Aged ; Pedigree
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  • 59
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-03-24
    Description: Transport of RNAs within nuclei and through nuclear pore complexes (NPCs) are essential, but poorly understood, steps in gene expression. In experiments with mammalian cells, RCC1, the abundant nuclear guanine nucleotide exchange factor for the guanosine triphosphatase Ran/TC4, was shown to be required for nucleocytoplasmic transport of precursors of spliceosomal small nuclear RNAs (snRNAs), intranuclear transport of U3 snRNA, and processing of ribosomal RNAs, but not for export of transfer RNAs. It is proposed that guanosine triphosphate (GTP)-bound Ran/TC4 associates with ribonucleoprotein particles (RNPs) during intranuclear movement, and that GTP hydrolysis promotes deposition of RNPs at targeted sites such as NPCs or nucleoli.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cheng, Y -- Dahlberg, J E -- Lund, E -- GM 30220/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Mar 24;267(5205):1807-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biomolecular Chemistry, University of Wisconsin School of Medicine, Madison 53706.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7534442" target="_blank"〉PubMed〈/a〉
    Keywords: Biological Transport/physiology ; *Cell Cycle Proteins ; Cell Line ; Cell Nucleus/*metabolism ; DNA-Binding Proteins/*physiology ; *Guanine Nucleotide Exchange Factors ; Guanosine Triphosphate/metabolism ; Methylation ; Nuclear Proteins/metabolism/*physiology ; RNA/*metabolism ; RNA Precursors/metabolism ; RNA, Ribosomal/metabolism ; RNA, Small Nuclear/metabolism ; RNA, Transfer/metabolism ; Spliceosomes/metabolism ; ran GTP-Binding Protein
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  • 60
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-02-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roush, W -- New York, N.Y. -- Science. 1995 Feb 10;267(5199):793-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7846523" target="_blank"〉PubMed〈/a〉
    Keywords: Aluminum/metabolism/pharmacology ; Alzheimer Disease/*metabolism/pathology ; Amyloid/metabolism ; Animals ; Brain/*metabolism/pathology ; Humans ; Microtubules/metabolism ; Neurofibrillary Tangles/*metabolism/pathology ; Neurons/*metabolism ; Phosphorylation ; tau Proteins/chemistry/*metabolism
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  • 61
    Publication Date: 1995-12-15
    Description: The template and coactivator requirements for synergistic transcription directed by a single activator, Bicoid (BCD), bound to multiple sites have been determined. Mutagenesis studies in combination with protein binding experiments and reconstituted transcription reactions identified two independent activation domains of BCD that target different coactivator subunits (TAFII110 and TAFII60) of the basal transcription factor IID (TFIID). The presence of both coactivators is required for BCD to recruit the TATA binding protein (TBP)-TAF complex to the promoter and direct synergistic activation of transcription. Thus, contact between multiple activation domains of BCD and different targets within the TFIID complex can mediate transcriptional synergism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sauer, F -- Hansen, S K -- Tjian, R -- New York, N.Y. -- Science. 1995 Dec 15;270(5243):1825-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Molecular and Cell Biology, University of California, Berkeley 94720-3204, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8525377" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Cell Line ; DNA/*metabolism ; DNA-Binding Proteins/genetics/metabolism ; Drosophila/*genetics/metabolism ; *Drosophila Proteins ; Enhancer Elements, Genetic ; Escherichia coli ; *Homeodomain Proteins ; Insect Hormones/genetics/*metabolism ; Juvenile Hormones/genetics/metabolism ; Mutagenesis ; Peptide Fragments/genetics/metabolism ; Promoter Regions, Genetic ; Protein Binding ; Recombinant Fusion Proteins/genetics/metabolism ; TATA-Box Binding Protein ; Templates, Genetic ; Trans-Activators/*metabolism ; Transcription Factor TFIID ; Transcription Factors/genetics/metabolism ; *Transcription, Genetic
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  • 62
    Publication Date: 1995-01-20
    Description: Multiple endocrine neoplasia types 2A and 2B (MEN2A and MEN2B) and familial medullary thyroid carcinoma are dominantly inherited cancer syndromes. All three syndromes are associated with mutations in RET, which encodes a receptor-like tyrosine kinase. The altered RET alleles were shown to be transforming genes in NIH 3T3 cells as a consequence of constitutive activation of the RET kinase. The MEN2A mutation resulted in RET dimerization at steady state, whereas the MEN2B mutation altered RET catalytic properties both quantitatively and qualitatively. Oncogenic conversion of RET in these neoplastic syndromes establishes germline transmission of dominant transforming genes in human cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Santoro, M -- Carlomagno, F -- Romano, A -- Bottaro, D P -- Dathan, N A -- Grieco, M -- Fusco, A -- Vecchio, G -- Matoskova, B -- Kraus, M H -- New York, N.Y. -- Science. 1995 Jan 20;267(5196):381-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centro di Endocrinologia ed Oncologia Sperimentale, Consiglio Nazionale delle Ricerche (CNR), Napoli, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7824936" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Alleles ; Animals ; Cell Transformation, Neoplastic/*genetics ; *Drosophila Proteins ; Genetic Vectors ; Humans ; Mice ; Multiple Endocrine Neoplasia Type 2a/*genetics ; Multiple Endocrine Neoplasia Type 2b/*genetics ; Mutation ; Phosphorylation ; Proto-Oncogene Proteins/chemistry/*genetics/metabolism ; Proto-Oncogene Proteins c-ret ; *Proto-Oncogenes ; Receptor Protein-Tyrosine Kinases/chemistry/*genetics/metabolism ; Substrate Specificity ; Transfection ; Tumor Cells, Cultured
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  • 63
    Publication Date: 1995-12-15
    Description: Evidence suggests that CD8+ T lymphocytes are involved in the control of human immunodeficiency virus (HIV) infection in vivo, either by cytolytic mechanisms or by the release of HIV-suppressive factors (HIV-SF). The chemokines RANTES, MIP-1 alpha, and MIP-1 beta were identified as the major HIV-SF produced by CD8+ T cells. Two active proteins purified from the culture supernatant of an immortalized CD8+ T cell clone revealed sequence identity with human RANTES and MIP-1 alpha. RANTES, MIP-1 alpha, and MIP-1 beta were released by both immortalized and primary CD8+ T cells. HIV-SF activity produced by these cells was completely blocked by a combination of neutralizing antibodies against RANTES, MIP-1 alpha, and MIP-1 beta. Recombinant human RANTES, MIP-1 alpha, and MIP-1 beta induced a dose-dependent inhibition of different strains of HIV-1, HIV-2, and simian immunodeficiency virus (SIV). These data may have relevance for the prevention and therapy of AIDS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cocchi, F -- DeVico, A L -- Garzino-Demo, A -- Arya, S K -- Gallo, R C -- Lusso, P -- New York, N.Y. -- Science. 1995 Dec 15;270(5243):1811-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Tumor Cell Biology, National Cancer Institute, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8525373" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Amino Acid Sequence ; Animals ; Antiviral Agents/*physiology ; CD8-Positive T-Lymphocytes/*immunology ; Cell Division/physiology ; Cell Line ; Cells, Cultured ; Chemokine CCL4 ; Chemokine CCL5/antagonists & inhibitors/*immunology ; Culture Media, Conditioned ; Cytokines/antagonists & inhibitors/*immunology ; Dose-Response Relationship, Immunologic ; Escherichia coli ; HIV Infections/immunology ; HIV-1/*immunology ; HIV-2/immunology ; Herpesvirus 6, Human/immunology ; Herpesvirus 7, Human/immunology ; Human T-lymphotropic virus 1/immunology ; Humans ; Immunoglobulin G/immunology ; Lymphocyte Activation ; Macaca nemestrina ; Macrophage Inflammatory Proteins ; Molecular Sequence Data ; Monokines/antagonists & inhibitors/*immunology ; Recombinant Proteins/immunology ; Simian Immunodeficiency Virus/immunology
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  • 64
    Publication Date: 1995-11-17
    Description: Interferon gamma (IFN-gamma) responsiveness in certain cells depends on the state of cellular differentiation or activation. Here an in vitro developmental system was used to show that IFN-gamma produced during generation of the CD4+ T helper cell type 1 (TH1) subset extinguishes expression of the IFN-gamma receptor beta subunit, resulting in TH1 cells that are unresponsive to IFN-gamma. This beta chain loss also occurred in IFN-gamma-treated TH2 cells and thus represents a specific response of CD4+ T cells to IFN-gamma rather than a TH1-specific differentiation event. These results define a mechanism of cellular desensitization where a cytokine down-regulates expression of a receptor subunit required primarily for signaling and not ligand binding.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bach, E A -- Szabo, S J -- Dighe, A S -- Ashkenazi, A -- Aguet, M -- Murphy, K M -- Schreiber, R D -- New York, N.Y. -- Science. 1995 Nov 17;270(5239):1215-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7502050" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/*biosynthesis ; Cell Differentiation ; Cell Line ; Cytokines/biosynthesis ; Down-Regulation ; Gene Expression ; Genes, MHC Class I ; Interferon-gamma/*pharmacology ; Ligands ; Mice ; Mice, Transgenic ; Receptors, Interferon/*biosynthesis ; Th1 Cells/cytology/immunology/*metabolism ; Th2 Cells/cytology/immunology/*metabolism
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  • 65
    Publication Date: 1995-05-26
    Description: Src homology 2 (SH2) domains mediate assembly of signaling complexes by binding specifically to tyrosine-phosphorylated proteins. A phosphotyrosine binding (PTB) domain has been identified which also binds specifically to tyrosine-phosphorylated targets, but is structurally different from SH2 domains. Expression cloning was used to identify targets of PTB domains. PTB domains bound to phosphotyrosine within a sequence motif, asparagine-X1-X2-phosphotyrosine (where X represents any amino acid), that is found in many signaling proteins and is not recognized by SH2 domains. Mutational studies indicated that high affinity binding of PTB domains may require a specific conformation of the motif.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kavanaugh, W M -- Turck, C W -- Williams, L T -- K11 HL02714/HL/NHLBI NIH HHS/ -- R01 HL 32898/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1995 May 26;268(5214):1177-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of California, San Francisco 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7539155" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites/physiology ; Binding, Competitive ; Cell Line ; Humans ; Molecular Sequence Data ; Phosphopeptides/*metabolism ; Phosphotyrosine ; Protein Binding/*physiology ; Recombinant Proteins/metabolism ; Signal Transduction/*physiology ; Tumor Cells, Cultured ; Tyrosine/*analogs & derivatives/metabolism
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  • 66
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-09-01
    Description: Members of the Rho family of small guanosine triphosphatases (GTPases) regulate the organization of the actin cytoskeleton; Rho controls the assembly of actin stress fibers and focal adhesion complexes, Rac regulates actin filament accumulation at the plasma membrane to produce lamellipodia and membrane ruffles, and Cdc42 stimulates the formation of filopodia. When microinjected into quiescent fibroblasts, Rho, Rac, and Cdc42 stimulated cell cycle progression through G1 and subsequent DNA synthesis. Furthermore, microinjection of dominant negative forms of Rac and Cdc42 or of the Rho inhibitor C3 transferase blocked serum-induced DNA synthesis. Unlike Ras, none of the Rho GTPases activated the mitogen-activated protein kinase (MAPK) cascade that contains the protein kinases c-Raf1, MEK (MAPK or ERK kinase), and ERK (extracellular signal-regulated kinase). Instead, Rac and Cdc42, but not Rho, stimulated a distinct MAP kinase, the c-Jun kinase JNK/SAPK (Jun NH2-terminal kinase or stress-activated protein kinase). Rho, Rac, and Cdc42 control signal transduction pathways that are essential for cell growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Olson, M F -- Ashworth, A -- Hall, A -- New York, N.Y. -- Science. 1995 Sep 1;269(5228):1270-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University College, London, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7652575" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Amino Acid Sequence ; Animals ; Base Sequence ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Cell Cycle Proteins/*metabolism ; Cell Line ; DNA/biosynthesis ; *G1 Phase ; GTP Phosphohydrolases/*metabolism ; GTP-Binding Proteins/*metabolism ; JNK Mitogen-Activated Protein Kinases ; MAP Kinase Kinase 1 ; Mice ; Microinjections ; *Mitogen-Activated Protein Kinase Kinases ; *Mitogen-Activated Protein Kinases ; Molecular Sequence Data ; Protein-Serine-Threonine Kinases/metabolism ; Protein-Tyrosine Kinases/metabolism ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-raf ; *Signal Transduction ; Transfection ; cdc42 GTP-Binding Protein, Saccharomyces cerevisiae ; rac GTP-Binding Proteins ; rhoA GTP-Binding Protein
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  • 67
    Publication Date: 1995-04-14
    Description: Coligation of the Fc receptor on B cells, Fc gamma RIIB1, with the B cell antigen receptor (BCR) leads to abortive BCR signaling. Here it was shown that the Fc gamma RIIB1 recruits the phosphotyrosine phosphatase PTP1C after BCR coligation. This association is mediated by the binding of a 13-amino acid tyrosine-phosphorylated sequence to the carboxyl-terminal Src homology 2 domain of PTP1C and activates PTP1C. Inhibitory signaling and PTP1C recruitment are dependent on the presence of the tyrosine within the 13-amino acid sequence. Inhibitory signaling mediated by Fc gamma RIIB1 is deficient in motheaten mice which do not express functional PTP1C. Thus, PTP1C is an effector of BCR-Fc gamma RIIB1 negative signal cooperativity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉D'Ambrosio, D -- Hippen, K L -- Minskoff, S A -- Mellman, I -- Pani, G -- Siminovitch, K A -- Cambier, J C -- New York, N.Y. -- Science. 1995 Apr 14;268(5208):293-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, National Jewish Center for Immunology and Respiratory Medicine, Denver, CO 80206, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7716523" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibody Formation ; *Antigens, CD ; B-Lymphocytes/*immunology/metabolism ; Binding Sites ; Calcium/metabolism ; Intracellular Signaling Peptides and Proteins ; Mice ; Mice, Mutant Strains ; Molecular Sequence Data ; Phosphorylation ; Protein Tyrosine Phosphatase, Non-Receptor Type 11 ; Protein Tyrosine Phosphatase, Non-Receptor Type 6 ; Protein Tyrosine Phosphatases/*metabolism ; Receptors, Antigen, B-Cell/*metabolism ; Receptors, IgG/*metabolism ; *Signal Transduction ; Tumor Cells, Cultured
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  • 68
    Publication Date: 1995-09-22
    Description: Activation of early response genes by interferons (IFNs) requires tyrosine phosphorylation of STAT (signal transducers and activators of transcription) proteins. It was found that the serine-threonine kinase mitogen-activated protein kinase (MAPK) [specifically, the 42-kilodalton MAPK or extracellular signal-regulated kinase 2 (ERK2)] interacted with the alpha subunit of IFN-alpha/beta receptor in vitro and in vivo. Treatment of cells with IFN-beta induced tyrosine phosphorylation and activation of MAPK and caused MAPK and Stat1 alpha to coimmunoprecipitate. Furthermore, expression of dominant negative MAPK inhibited IFN-beta-induced transcription. Therefore, MAPK appears to regulate IFN-alpha and IFN-beta activation of early response genes by modifying the Jak-STAT signaling cascade.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉David, M -- Petricoin, E 3rd -- Benjamin, C -- Pine, R -- Weber, M J -- Larner, A C -- GM47332/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Sep 22;269(5231):1721-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Cytokine Biology, Center for Biologics Evaluation and Research, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7569900" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cells, Cultured ; DNA-Binding Proteins/*metabolism ; Enzyme Activation ; *Gene Expression Regulation ; Humans ; Interferon-alpha/pharmacology ; Interferon-beta/*pharmacology ; Membrane Proteins ; Mitogen-Activated Protein Kinase 1 ; Phosphorylation ; Receptor, Interferon alpha-beta ; Receptors, Interferon/*metabolism ; Recombinant Fusion Proteins/metabolism ; STAT1 Transcription Factor ; *Signal Transduction ; Trans-Activators/*metabolism ; Transcription, Genetic ; Transfection ; Tumor Cells, Cultured ; Tyrosine/metabolism
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  • 69
    Publication Date: 1995-02-24
    Description: Severe combined immunodeficient (SCID) mice are deficient in a recombination process utilized in both DNA double-strand break repair and in V(D)J recombination. The phenotype of these mice involves both cellular hypersensitivity to ionizing radiation and a lack of B and T cell immunity. The catalytic subunit of DNA-dependent protein kinase, p350, was identified as a strong candidate for the murine gene SCID. Both p350 and a gene complementing the SCID defect colocalize to human chromosome 8q11. Chromosomal fragments expressing p350 complement the SCID phenotype, and p350 protein levels are greatly reduced in cells derived from SCID mice compared to cells from wild-type mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kirchgessner, C U -- Patil, C K -- Evans, J W -- Cuomo, C A -- Fried, L M -- Carter, T -- Oettinger, M A -- Brown, J M -- CA 15201/CA/NCI NIH HHS/ -- CA 37761/CA/NCI NIH HHS/ -- GM48026/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Feb 24;267(5201):1178-83.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Radiation Oncology, Stanford University School of Medicine, CA 94305.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7855601" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; Chromosome Mapping ; Chromosomes, Human, Pair 8 ; Cloning, Molecular ; DNA Repair/genetics ; DNA-Activated Protein Kinase ; *DNA-Binding Proteins ; Gamma Rays ; Genetic Complementation Test ; Genetic Markers ; Humans ; In Situ Hybridization, Fluorescence ; Mice ; Mice, SCID ; Molecular Sequence Data ; Nuclear Proteins ; Phenotype ; Protein-Serine-Threonine Kinases/*genetics/metabolism ; Radiation Tolerance ; Recombination, Genetic ; Severe Combined Immunodeficiency/enzymology/*genetics
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  • 70
    Publication Date: 1995-07-14
    Description: It has long been the paradigm that T cells recognize peptide antigens presented by major histocompatibility complex (MHC) molecules. However, nonpeptide antigens can be presented to T cells by human CD1b molecules, which are not encoded by the MHC. A major class of microbial antigens associated with pathogenicity are lipoglycans. It is shown here that human CD1b presents the defined mycobacterial lipoglycan lipoarabinomannan (LAM) to alpha beta T cell receptor-bearing lymphocytes. Presentation of these lipoglycan antigens required internalization and endosomal acidification. The T cell recognition required mannosides with alpha(1--〉2) linkages and a phosphotidylinositol unit. T cells activated by LAM produced interferon gamma and were cytolytic. Thus, an important class of microbial molecules, the lipoglycans, is a part of the universe of foreign antigens recognized by human T cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sieling, P A -- Chatterjee, D -- Porcelli, S A -- Prigozy, T I -- Mazzaccaro, R J -- Soriano, T -- Bloom, B R -- Brenner, M B -- Kronenberg, M -- Brennan, P J -- AI 07118/AI/NIAID NIH HHS/ -- AI 18357/AI/NIAID NIH HHS/ -- AI 28973/AI/NIAID NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1995 Jul 14;269(5221):227-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Dermatology, University of California at Los Angeles (UCLA) School of Medicine 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7542404" target="_blank"〉PubMed〈/a〉
    Keywords: *Antigen Presentation ; Antigen-Presenting Cells/immunology ; Antigens, CD/*immunology ; Antigens, CD1 ; Carbohydrate Conformation ; Carbohydrate Sequence ; Cell Line ; Humans ; Interferon-gamma/secretion ; Interleukin-4/secretion ; Leprosy/*immunology ; Lipopolysaccharides/*immunology ; Lymphocyte Activation ; Molecular Sequence Data ; Mycobacterium leprae/immunology ; Phosphatidylinositols/immunology ; Receptors, Antigen, T-Cell, alpha-beta/immunology ; Species Specificity ; T-Lymphocytes, Cytotoxic/*immunology
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  • 71
    Publication Date: 1995-01-20
    Description: Treatment of cells with pro-inflammatory cytokines or ultraviolet radiation causes activation of the c-Jun NH2-terminal protein kinase (JNK). Activating transcription factor-2 (ATF2) was found to be a target of the JNK signal transduction pathway. ATF2 was phosphorylated by JNK on two closely spaced threonine residues within the NH2-terminal activation domain. The replacement of these phosphorylation sites with alanine inhibited the transcriptional activity of ATF2. These mutations also inhibited ATF2-stimulated gene expression mediated by the retinoblastoma (Rb) tumor suppressor and the adenovirus early region 1A (E1A) oncoprotein. Furthermore, expression of dominant-negative JNK inhibited ATF2 transcriptional activity. Together, these data demonstrate a role for the JNK signal transduction pathway in transcriptional responses mediated by ATF2.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gupta, S -- Campbell, D -- Derijard, B -- Davis, R J -- New York, N.Y. -- Science. 1995 Jan 20;267(5196):389-93.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, University of Massachusetts Medical School, Worcester 01605.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7824938" target="_blank"〉PubMed〈/a〉
    Keywords: Activating Transcription Factor 2 ; Adenovirus E1A Proteins/physiology ; Animals ; Base Sequence ; CHO Cells ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cricetinae ; Cyclic AMP Response Element-Binding Protein/chemistry/genetics/*metabolism ; DNA/metabolism ; Interleukin-1/pharmacology ; JNK Mitogen-Activated Protein Kinases ; *Leucine Zippers ; *Mitogen-Activated Protein Kinases ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Phosphorylation ; Point Mutation ; Promoter Regions, Genetic ; Retinoblastoma Protein/physiology ; *Signal Transduction ; *Transcription Factors ; *Transcription, Genetic ; Ultraviolet Rays
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  • 72
    Publication Date: 1995-09-15
    Description: H-Y is a transplantation antigen that can lead to rejection of male organ and bone marrow grafts by female recipients, even if the donor and recipient match at the major histocompatibility locus of humans, the HLA (human leukocyte antigen) locus. However, the origin and function of H-Y antigens has eluded researchers for 40 years. One human H-Y antigen presented by HLA-B7 was identified as an 11-residue peptide derived from SMCY, an evolutionarily conserved protein encoded on the Y chromosome. The protein from the homologous gene on the X chromosome, SMCX, differs by two amino acid residues in the same region. The identification of H-Y may aid in transplantation prognosis, prenatal diagnosis, and fertilization strategies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, W -- Meadows, L R -- den Haan, J M -- Sherman, N E -- Chen, Y -- Blokland, E -- Shabanowitz, J -- Agulnik, A I -- Hendrickson, R C -- Bishop, C E -- AI20963/AI/NIAID NIH HHS/ -- AI33993/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1995 Sep 15;269(5230):1588-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, University of Virginia, Charlottesville 22908, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7667640" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; B-Lymphocytes ; Cell Line ; Chromatography, High Pressure Liquid ; H-Y Antigen/*chemistry/genetics/immunology ; HLA-B7 Antigen/immunology ; Histone Demethylases ; Histone-Lysine N-Methyltransferase ; Humans ; Male ; Mass Spectrometry/methods ; Molecular Sequence Data ; Molecular Weight ; Oxidoreductases, N-Demethylating ; Proteins/*chemistry/genetics/immunology ; T-Lymphocytes, Cytotoxic/immunology ; X Chromosome ; *Y Chromosome
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  • 73
    Publication Date: 1995-12-01
    Description: Intracellular calcium (Ca2+) inhibits the opening of L-type (alpha 1C) Ca2+ channels, providing physiological control of Ca2+ entry into a wide variety of cells. A structural determinant of this Ca(2+)-sensitive inactivation was revealed by chimeric Ca2+ channels derived from parental alpha 1C and alpha 1E channels, the latter of which is a neuronal channel lacking Ca2+ inactivation. A consensus Ca(2+)-binding motif (an EF hand), located on the alpha 1C subunit, was required for Ca2+ inactivation. Donation of the alpha 1C EF-hand region to the alpha 1E channel conferred the Ca(2+)-inactivating phenotype. These results strongly suggest that Ca2+ binding to the alpha 1C subunit initiates Ca2+ inactivation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉de Leon, M -- Wang, Y -- Jones, L -- Perez-Reyes, E -- Wei, X -- Soong, T W -- Snutch, T P -- Yue, D T -- New York, N.Y. -- Science. 1995 Dec 1;270(5241):1502-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7491499" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Barium/metabolism ; Calcium/*metabolism/pharmacology ; Calcium Channels/chemistry/*metabolism ; Cell Line ; Cyclic AMP-Dependent Protein Kinases/metabolism ; Humans ; Ion Channel Gating ; Molecular Sequence Data ; Patch-Clamp Techniques ; Phosphorylation ; Recombinant Fusion Proteins/chemistry/metabolism ; Sequence Alignment ; Up-Regulation
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  • 74
    Publication Date: 1995-07-21
    Description: The basal lamina that ensheaths skeletal muscle fibers traverses the synaptic cleft at the neuromuscular junction. Synaptic and extrasynaptic portions of the basal lamina contain different laminin beta chains: beta 2 (or s) at synapses and beta 1 (or B1) extrasynaptically. Laminin beta 2 is also confined to synapselike patches on myotube surfaces in vitro, whereas beta 1 is present throughout the extracellular matrix. This differential localization of laminin beta chains was analyzed by expression of chimeric beta 1-beta 2 molecules in cultured mouse myotubes. A 16-amino acid carboxyl-terminal sequence in beta 2 was necessary for synaptic localization, and an amino-terminal domain in beta 1 promoted association with extracellular fibrils. The synaptic targeting sequence of beta 2 contains a site previously shown to be adhesive for motor neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martin, P T -- Ettinger, A J -- Sanes, J R -- New York, N.Y. -- Science. 1995 Jul 21;269(5222):413-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy and Neurobiology, Washington University School of Medicine, St.Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7618109" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Basement Membrane/chemistry/metabolism ; Cell Line ; Laminin/analysis/biosynthesis/*chemistry/*metabolism ; Mice ; Molecular Sequence Data ; Muscle, Skeletal/cytology/metabolism ; Neuromuscular Junction/chemistry/metabolism ; Oligopeptides/metabolism ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Receptors, Cholinergic/analysis ; Recombinant Fusion Proteins/chemistry/metabolism ; Synapses/chemistry/*metabolism ; Transfection
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  • 75
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-04-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DeFranco, A L -- Law, D A -- New York, N.Y. -- Science. 1995 Apr 14;268(5208):263-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, University of California at San Francisco 94143-0552, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7716518" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibody Formation ; *Antigens, CD ; B-Lymphocytes/*immunology/metabolism ; Intracellular Signaling Peptides and Proteins ; Lymphocyte Activation ; Mice ; Phosphorylation ; Protein Tyrosine Phosphatase, Non-Receptor Type 11 ; Protein Tyrosine Phosphatase, Non-Receptor Type 6 ; Protein Tyrosine Phosphatases/*metabolism ; Receptors, Antigen, B-Cell/metabolism ; Receptors, IgG/metabolism ; Signal Transduction
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  • 76
    Publication Date: 1995-07-14
    Description: The Rac guanosine 5'-triphosphate (GTP)-binding proteins regulate oxidant production by phagocytic leukocytes. Two Ste20-related p21-activated kinases (PAKs) were identified as targets of Rac in human neutrophils. Activity of the approximately 65- and approximately 68-kilodalton PAKs was rapidly stimulated by chemoattractants acting through pertussis toxin-sensitive heterotrimeric GTP-binding proteins (G proteins). Native and recombinant PAKs phosphorylated the p47phox reduced nicotinamide adenine dinucleotide phosphate (NADPH) oxidase component in a Rac-GTP-dependent manner. The action of PAKs during phagocyte activation by G protein-coupled pathways may contribute to regulation of NADPH oxidase activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knaus, U G -- Morris, S -- Dong, H J -- Chernoff, J -- Bokoch, G M -- AI35947/AI/NIAID NIH HHS/ -- HL48008/HL/NHLBI NIH HHS/ -- P60 AR40770/AR/NIAMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1995 Jul 14;269(5221):221-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, Scrippts Research Institute, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7618083" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Enzyme Activation ; GTP-Binding Proteins/*metabolism ; Guanosine Triphosphate/*metabolism ; Humans ; N-Formylmethionine Leucyl-Phenylalanine/pharmacology ; NADH, NADPH Oxidoreductases/metabolism ; NADPH Dehydrogenase/metabolism ; NADPH Oxidase ; Neutrophil Activation ; Neutrophils/*enzymology ; Pertussis Toxin ; Phosphoproteins/metabolism ; Phosphorylation ; Protein-Serine-Threonine Kinases/*metabolism ; Recombinant Proteins/metabolism ; Tetradecanoylphorbol Acetate/pharmacology ; Virulence Factors, Bordetella/pharmacology ; p21-Activated Kinases ; rac GTP-Binding Proteins
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  • 77
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-07-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martin, S J -- McGahon, A J -- Nishioka, W K -- LaFace, D -- Guo, X -- Th'ng, J -- Bradbury, E M -- Green, D R -- GM52735/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Jul 7;269(5220):106-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7604270" target="_blank"〉PubMed〈/a〉
    Keywords: *Apoptosis ; CDC2 Protein Kinase/*metabolism ; Cell Line ; Temperature
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  • 78
    Publication Date: 1995-10-06
    Description: The activation of cyclin-dependent kinases (CDKs) requires the phosphorylation of a conserved threonine (Thr160 in Cdk2) by CDK-activating kinase (CAK). Human KAP (also called Cdi1), a CDK-associated phosphatase, was shown to dephosphorylate Thr160 in human Cdk2. KAP was unable to dephosphorylate Tyr15 and only dephosphorylated Thr160 in native monomeric Cdk2. The binding of cyclin A to Cdk2 inhibited the dephosphorylation of Thr160 by KAP but did not preclude the binding of KAP to the cyclin A-Cdk2 complex. Moreover, the dephosphorylation of Thr160 by KAP prevented Cdk2 kinase activity upon subsequent association with cyclin A. These results suggest that KAP binds to Cdk2 and dephosphorylates Thr160 when the associated cyclin subunit is degraded or dissociates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Poon, R Y -- Hunter, T -- CA14195/CA/NCI NIH HHS/ -- CA39780/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1995 Oct 6;270(5233):90-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Biology and Virology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037-1099, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7569954" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; *CDC2-CDC28 Kinases ; *Cell Cycle Proteins ; Cell Line ; Cyclin-Dependent Kinase 2 ; Cyclin-Dependent Kinase Inhibitor Proteins ; Cyclin-Dependent Kinases/*metabolism ; Cyclins/metabolism ; Dual-Specificity Phosphatases ; HeLa Cells ; Humans ; Molecular Sequence Data ; Phosphoprotein Phosphatases/*metabolism ; Phosphorylation ; *Protein Tyrosine Phosphatases ; Protein-Serine-Threonine Kinases/*metabolism ; Recombinant Fusion Proteins/metabolism ; Threonine/metabolism
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  • 79
    Publication Date: 1995-01-13
    Description: Peptides from endogenous proteins are presented by major histocompatibility complex class I molecules, but antigens (Ags) in the extracellular fluids are generally not. However, pathogens or particulate Ags that are internalized into phagosomes of macrophages (M phi s) stimulate CD8 T cells. The presentation of these Ags is resistant to chloroquine but is blocked by inhibitors of the proteasome, a mutation in the TAP1-TAP2 transporter, and brefeldin A. Moreover, phagocytosis of a ribosomal-inactivating protein inhibited M phi protein synthesis. These results demonstrate that M phi s transfer Ags from phagosomes into the cytosol and that endogenous and exogenous Ags use a final common pathway for class I presentation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kovacsovics-Bankowski, M -- Rock, K L -- AI20248/AI/NIAID NIH HHS/ -- AI31337/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1995 Jan 13;267(5195):243-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Lymphocyte Biology, Dana-Farber Cancer Institute, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7809629" target="_blank"〉PubMed〈/a〉
    Keywords: ATP-Binding Cassette Transporters/genetics/metabolism ; Amino Acid Sequence ; Animals ; *Antigen Presentation ; Antigens/*metabolism ; Brefeldin A ; Cell Line ; Chloroquine/pharmacology ; Cyclopentanes/pharmacology ; Cysteine Endopeptidases/metabolism ; Cytosol/*immunology/metabolism ; Histocompatibility Antigens Class I/*immunology ; Macrophages/*immunology ; Mice ; Molecular Sequence Data ; Multienzyme Complexes/metabolism ; Oligopeptides/immunology/metabolism ; Ovalbumin/immunology/metabolism ; Phagocytosis ; Phagosomes/*immunology/metabolism ; Plant Proteins/pharmacology ; Proteasome Endopeptidase Complex ; Ribosome Inactivating Proteins, Type 1
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  • 80
    Publication Date: 1995-03-03
    Description: In response to specific ligands, various STAT proteins (signal transducers and activators of transcription) are phosphorylated on tyrosine by Jak protein kinases and translocated to the nucleus to direct gene transcription. Selection of a STAT at the interferon gamma receptor as well as specific STAT dimer formation depended on the presence of particular SH2 groups (phosphotyrosine-binding domains), whereas the amino acid sequence surrounding the phosphorylated tyrosine on the STAT could vary. Thus, SH2 groups in STAT proteins may play crucial roles in specificity at the receptor kinase complex and in subsequent dimerization, whereas the kinases are relatively nonspecific.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heim, M H -- Kerr, I M -- Stark, G R -- Darnell, J E Jr -- AI32489/AI/NIAID NIH HHS/ -- AI34420/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1995 Mar 3;267(5202):1347-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Cell Biology, Rockefeller University, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7871432" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; DNA-Binding Proteins/chemistry/*metabolism ; Interferon-alpha/*pharmacology ; Interferon-gamma/*pharmacology ; Janus Kinase 1 ; Janus Kinase 2 ; Phosphorylation ; Protein-Tyrosine Kinases/*metabolism ; Proteins/metabolism ; *Proto-Oncogene Proteins ; Receptors, Interferon/metabolism ; Recombinant Fusion Proteins/metabolism ; STAT1 Transcription Factor ; Signal Transduction ; Trans-Activators/chemistry/*metabolism ; Tyrosine/metabolism
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  • 81
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-11-24
    Description: Some growth factors are therapeutically useful partly because restricted expression of their receptors limits their action to particular cell types. However, no unique stimulatory factor is known for many clinically relevant cell types, such as CD34+ hematopoietic stem cells. Here, soluble alpha receptor (R alpha) components for interleukin-6 (IL-6) and ciliary neurotrophic factor (CNTF) were targeted in an active form to cells expressing surface markers such as CD34 or CD45, thereby rendering those cells responsive to IL-6 or CNTF. The targeting of R alpha components may provide the means to create "designer" cytokines that activate a desired cell type expressing a specific cell surface marker.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Economides, A N -- Ravetch, J V -- Yancopoulos, G D -- Stahl, N -- New York, N.Y. -- Science. 1995 Nov 24;270(5240):1351-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Regeneron Pharmaceuticals, Tarrytown, NY 10591, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7481821" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Antigens, CD/immunology/*metabolism ; Antigens, CD34/analysis ; Antigens, CD45/analysis ; Cell Division ; Cell Line ; Cell Membrane/*metabolism ; Ciliary Neurotrophic Factor ; Cytokine Receptor gp130 ; *Growth Inhibitors ; Humans ; Immunoglobulin Fc Fragments ; Interleukin-6/*pharmacology ; Leukemia Inhibitory Factor ; Leukemia Inhibitory Factor Receptor alpha Subunit ; *Lymphokines ; Membrane Glycoproteins/metabolism ; Nerve Tissue Proteins/*pharmacology ; Phosphorylation ; Receptor, Ciliary Neurotrophic Factor ; Receptors, Cytokine/metabolism ; Receptors, Fc ; Receptors, Interleukin/immunology/*metabolism ; Receptors, Interleukin-6 ; Receptors, Nerve Growth Factor/immunology/*metabolism ; Receptors, OSM-LIF ; Recombinant Fusion Proteins/metabolism ; Solubility ; Tumor Cells, Cultured
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  • 82
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-09-22
    Description: NMDA (N-methyl-D-aspartate) receptors are selectively localized at the postsynaptic membrane of excitatory synapses in the mammalian brain. The molecular mechanisms underlying this localization were investigated by expressing the NR1 subunit of the NMDA receptor in fibroblasts. NR1 splice variants containing the first COOH-terminal exon cassette (NR1A and NR1D) were located in discrete, receptor-rich domains associated with the plasma membrane. NR1 splice variants lacking this exon cassette (NR1C and NR1E) were distributed throughout the cell, with large amounts of NR1 protein present in the cell interior. Insertion of this exon cassette into the COOH-terminus of the GluR1 AMPA (alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionate) receptor was sufficient to cause GluR1 to be localized to discrete, receptor-rich domains. Furthermore, protein kinase C phosphorylation of specific serines within this exon disrupted the receptor-rich domains. These results demonstrate that amino acid sequences contained within the NR1 molecule serve to localize this receptor subunit to discrete membrane domains in a manner that is regulated by alternative splicing and protein phosphorylation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ehlers, M D -- Tingley, W G -- Huganir, R L -- New York, N.Y. -- Science. 1995 Sep 22;269(5231):1734-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Howard Hughes Medical Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7569904" target="_blank"〉PubMed〈/a〉
    Keywords: Alternative Splicing ; Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Cell Membrane/*metabolism ; Exons ; Fluorescent Antibody Technique ; Microscopy, Confocal ; Molecular Sequence Data ; Phosphorylation ; Protein Kinase C/metabolism ; Quail ; Receptors, AMPA/analysis ; Receptors, N-Methyl-D-Aspartate/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/chemistry/metabolism ; Serine/metabolism ; Subcellular Fractions/metabolism ; Tetradecanoylphorbol Acetate/pharmacology ; Transfection
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  • 83
    Publication Date: 1995-10-06
    Description: Cdc2 is the cyclin-dependent kinase that controls entry of cells into mitosis. Phosphorylation of Cdc2 on threonine-14 and tyrosine-15 inhibits the activity of the enzyme and prevents premature initiation of mitosis. Although Wee1 has been identified as the kinase that phosphorylates tyrosine-15 in various organisms, the threonine-14-specific kinase has not been isolated. A complementary DNA was cloned from Xenopus that encodes Myt1, a member of the Wee1 family that was discovered to phosphorylate Cdc2 efficiently on both threonine-14 and tyrosine-15. Myt1 is a membrane-associated protein that contains a putative transmembrane segment. Immunodepletion studies suggested that Myt1 is the predominant threonine-14-specific kinase in Xenopus egg extracts. Myt1 activity is highly regulated during the cell cycle, suggesting that this relative of Wee1 plays a role in mitotic control.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mueller, P R -- Coleman, T R -- Kumagai, A -- Dunphy, W G -- New York, N.Y. -- Science. 1995 Oct 6;270(5233):86-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology 216-76, Howard Hughes Medical Institute, California Institute of Technology, Pasadena 91125, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7569953" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; CDC2 Protein Kinase/*metabolism ; *Cell Cycle Proteins ; Cell Membrane/enzymology ; Cloning, Molecular ; Cyclins/metabolism ; Interphase ; Mitosis ; Molecular Sequence Data ; Mutation ; *Nuclear Proteins ; Oocytes/enzymology ; Phosphorylation ; Phosphothreonine/metabolism ; Phosphotyrosine/metabolism ; Protein-Serine-Threonine Kinases/chemistry/genetics/*metabolism ; Protein-Tyrosine Kinases/chemistry/genetics/*metabolism ; Recombinant Proteins/metabolism ; Xenopus ; *Xenopus Proteins
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  • 84
    Publication Date: 1995-03-24
    Description: Congenital lipoid adrenal hyperplasia is an autosomal recessive disorder that is characterized by impaired synthesis of all adrenal and gonadal steroid hormones. In three unrelated individuals with this disorder, steroidogenic acute regulatory protein, which enhances the mitochondrial conversion of cholesterol into pregnenolone, was mutated and nonfunctional, providing genetic evidence that this protein is indispensable normal adrenal and gonadal steroidogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lin, D -- Sugawara, T -- Strauss, J F 3rd -- Clark, B J -- Stocco, D M -- Saenger, P -- Rogol, A -- Miller, W L -- HD 06274/HD/NICHD NIH HHS/ -- HD 07688/HD/NICHD NIH HHS/ -- HD 28825/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1995 Mar 24;267(5205):1828-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, University of California, San Francisco 94143.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7892608" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Glands/*metabolism ; Adrenal Hyperplasia, Congenital/metabolism ; Amino Acid Sequence ; Animals ; Base Sequence ; Biological Transport/physiology ; Cell Line ; Cholesterol/*metabolism ; Female ; Gonads/*metabolism ; Haplorhini ; Hormones/*biosynthesis ; Humans ; Male ; Mitochondria/metabolism ; Molecular Sequence Data ; Phosphoproteins/genetics/*physiology ; Point Mutation ; Steroids/*biosynthesis ; Transfection
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  • 85
    Publication Date: 1995-06-09
    Description: The production of neurotrophin-4 (NT-4) in rat skeletal muscle was found to depend on muscle activity. The amounts of NT-4 messenger RNA present decreased after blockade of neuromuscular transmission with alpha-bungarotoxin and increased during postnatal development and after electrical stimulation in a dose-dependent manner. NT-4 immunoreactivity was detected in slow, type I muscle fibers. Intramuscular administration of NT-4 induced sprouting of intact adult motor nerves. Thus, muscle-derived NT-4 acted as an activity-dependent neurotrophic signal for growth and remodeling of adult motor neuron innervation. NT-4 may thus be partly responsible for the effects of exercise and electrical stimulation on neuromuscular performance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Funakoshi, H -- Belluardo, N -- Arenas, E -- Yamamoto, Y -- Casabona, A -- Persson, H -- Ibanez, C F -- New York, N.Y. -- Science. 1995 Jun 9;268(5216):1495-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7770776" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bungarotoxins/pharmacology ; Cell Line ; Electric Stimulation ; Gene Expression Regulation ; Motor Neurons/*physiology ; Muscle Denervation ; Muscle Development ; Muscle Fibers, Slow-Twitch/chemistry ; Muscle, Skeletal/chemistry/growth & development/innervation/*physiology ; Nerve Growth Factors/biosynthesis/genetics/pharmacology/*physiology ; Neuromuscular Junction/physiology ; RNA, Messenger/analysis/biosynthesis/genetics ; Rats ; Rats, Inbred F344 ; Receptor Protein-Tyrosine Kinases/metabolism ; Receptor, Nerve Growth Factor ; Receptor, trkB ; Receptors, Nerve Growth Factor/metabolism ; Receptors, Neuropeptide/metabolism ; Sciatic Nerve/physiology ; Synaptic Transmission
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  • 86
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-12-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balter, M -- New York, N.Y. -- Science. 1995 Dec 8;270(5242):1560-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7502059" target="_blank"〉PubMed〈/a〉
    Keywords: Antiviral Agents/*physiology ; CD4-Positive T-Lymphocytes/virology ; CD8-Positive T-Lymphocytes/*immunology ; Cell Line ; Chemokine CCL4 ; Chemokine CCL5/physiology ; Chemokines/*physiology ; HIV/*physiology ; HIV-1/physiology ; HIV-2/physiology ; Humans ; Interleukin-16 ; Lymphokines/*physiology ; Macrophage Inflammatory Proteins ; Monokines/physiology ; Virus Replication
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  • 87
    Publication Date: 1995-06-16
    Description: Cells from patients with ataxia telangiectasia (AT) are hypersensitive to ionizing radiation and are defective in the regulation of DNA synthesis. A complementary DNA that corrects the radiation sensitivity and DNA synthesis defects in fibroblasts from an AT group D patient was isolated by expression cloning and shown to encode a truncated form of I kappa B-alpha, an inhibitor of the nuclear factor kappa B (NF-kappa B) transcriptional activator. The parental AT fibroblasts expressed large amounts of the I kappa B-alpha transcript and showed constitutive activation of NF-kappa B. The AT fibroblasts transfected with the truncated I kappa B-alpha expressed normal amounts of the I kappa B-alpha transcript and showed regulated activation of NF-kappa B. These results suggest that aberrant regulation of NF-kappa B and I kappa B-alpha contribute to the cellular defect in AT.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jung, M -- Zhang, Y -- Lee, S -- Dritschilo, A -- CA45408/CA/NCI NIH HHS/ -- R29 CA63023/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1995 Jun 16;268(5217):1619-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Radiation Medicine, Georgetown University School of Medicine, Washington, DC 20007, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7777860" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Ataxia Telangiectasia/*genetics/pathology/physiopathology ; Cell Line ; Cell Survival/radiation effects ; DNA/*biosynthesis ; DNA-Binding Proteins/*genetics/physiology ; Dose-Response Relationship, Radiation ; Genetic Complementation Test ; Humans ; *I-kappa B Proteins ; Molecular Sequence Data ; NF-kappa B/*antagonists & inhibitors/metabolism ; *Radiation Tolerance ; Transfection ; Tumor Cells, Cultured
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  • 88
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-06-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1995 Jun 30;268(5219):1847-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7604255" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*complications ; Animals ; Cell Line ; DNA, Viral/*analysis ; Female ; Herpesviridae/*genetics ; Herpesviridae Infections/drug therapy/virology ; Humans ; Male ; Sarcoma, Kaposi/complications/therapy/*virology
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  • 89
    Publication Date: 1995-04-07
    Description: A single heterozygous nucleotide exchange in exon M2 of the gene encoding the parathyroid hormone-parathyroid hormone-related peptide (PTH-PTHrP) receptor was identified in a patient with Jansen-type metaphyseal chondrodysplasia, which changes a strictly conserved histidine residue at position 223 in the receptor's first intracellular loop to arginine. Constitutive, ligand-independent adenosine 3',5'-monophosphate accumulation was observed in COS-7 cells expressing the mutant PTH-PTHrP receptor but not in cells expressing the wild-type receptor. This finding explains the severe ligand-independent hypercalcemia and hypophosphatemia, and most likely the abnormal formation of endochondral bone, in this rare form of short-limbed dwarfism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schipani, E -- Kruse, K -- Juppner, H -- R01 46718/PHS HHS/ -- New York, N.Y. -- Science. 1995 Apr 7;268(5207):98-100.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Massachusetts General Hospital 02114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7701349" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cell Line ; Cyclic AMP/metabolism ; DNA Mutational Analysis ; Dwarfism/*genetics ; Female ; Humans ; Inositol Phosphates/metabolism ; Male ; Molecular Sequence Data ; Osteochondrodysplasias/*genetics ; *Point Mutation ; Receptor, Parathyroid Hormone, Type 1 ; Receptors, Parathyroid Hormone/biosynthesis/*genetics/physiology ; Recombinant Proteins/biosynthesis ; Transfection
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  • 90
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-03-10
    Description: Desensitization is a phenomenon that is common to many ligand-gated ion channels but has been demonstrated only rarely with physiological stimulation. Numerous studies describe desensitization of the N-methyl-D-aspartate (NMDA) subtype of glutamate receptor by exogenous agonists, but whether synaptic stimulation causes desensitization has been unknown. Synaptic stimulation of NMDA receptors on rat hippocampal neurons resulted in desensitization that was prevented by intracellular 1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid (BAPTA), adenosine-5'-O-(3-thiotriphosphate) (ATP-gamma-S), or inhibitors of phosphatase 2B (calcineurin), but not by inhibitors of phosphatases 1 and 2A or of tyrosine phosphatases. Synaptic NMDA receptors may fluctuate between phosphorylated and dephosphorylated forms, depending on the rate of synaptic stimulation and the magnitude of the associated influx of calcium through NMDA receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tong, G -- Shepherd, D -- Jahr, C E -- NS21419/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1995 Mar 10;267(5203):1510-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Vollum Institute, Oregon Health Sciences University, Portland 97201-3098.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7878472" target="_blank"〉PubMed〈/a〉
    Keywords: 2-Amino-5-phosphonovalerate/pharmacology ; Adenosine Triphosphate/analogs & derivatives/pharmacology ; Animals ; Calcineurin ; Calcium/metabolism ; Calmodulin-Binding Proteins/*pharmacology ; Cells, Cultured ; Egtazic Acid/analogs & derivatives/pharmacology ; Electric Stimulation ; Glycine/pharmacology ; Hippocampus ; Membrane Potentials ; Neurons/physiology ; Patch-Clamp Techniques ; Phosphoprotein Phosphatases/*pharmacology ; Phosphorylation ; Rats ; Receptors, N-Methyl-D-Aspartate/*drug effects/physiology ; Synapses/*physiology
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  • 91
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-09-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Torrence, P F -- New York, N.Y. -- Science. 1995 Sep 29;269(5232):1803-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7569907" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Conservation of Natural Resources/*legislation & jurisprudence ; Disease Models, Animal ; *Ecosystem ; Humans ; Plants, Medicinal ; *Research ; United States
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  • 92
    Publication Date: 1995-03-03
    Description: The neuron-restrictive silencer factor (NRSF) binds a DNA sequence element, called the neuron-restrictive silencer element (NRSE), that represses neuronal gene transcription in nonneuronal cells. Consensus NRSEs have been identified in 18 neuron-specific genes. Complementary DNA clones encoding a functional fragment of NRSF were isolated and found to encode a novel protein containing eight noncanonical zinc fingers. Expression of NRSF mRNA was detected in most nonneuronal tissues at several developmental stages. In the nervous system, NRSF mRNA was detected in undifferentiated neuronal progenitors, but not in differentiated neurons. NRSF represents the first example of a vertebrate silencer protein that potentially regulates a large battery of cell type-specific genes, and therefore may function as a master negative regulator of neurogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schoenherr, C J -- Anderson, D J -- NS23476/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1995 Mar 3;267(5202):1360-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology 216-76, California Institute of Technology, Pasadena 91125.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7871435" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Brain-Derived Neurotrophic Factor ; Cell Line ; Central Nervous System/chemistry/cytology/embryology ; DNA, Complementary/genetics ; DNA-Binding Proteins/analysis/chemistry/genetics/*physiology ; *Gene Expression Regulation ; Humans ; Intracellular Signaling Peptides and Proteins ; Membrane Proteins ; Mice ; Molecular Sequence Data ; Nerve Growth Factors/genetics ; Nerve Tissue Proteins/genetics ; Neurons/chemistry ; *Regulatory Sequences, Nucleic Acid ; Repressor Proteins/physiology ; Sodium Channels/genetics ; Stem Cells/chemistry ; Synapsins/genetics ; Transcription Factors/analysis/chemistry/genetics/*physiology ; Transcription, Genetic ; Transfection ; Zinc Fingers
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  • 93
    Publication Date: 1995-05-12
    Description: The function of the N-methyl-D-aspartate (NMDA)-preferring glutamate receptor can be regulated by extracellular pH, a process that may be important during ischemia in the brain or during seizures. Protons inhibit NMDA receptor function by 50 percent at pH 7.3 through interactions with the NR1 subunit, and both polyamines and NR1 exon 5 potentiate receptor function through relief of the tonic proton inhibition present at physiological pH. A single amino acid (lysine 211) was identified that mediates the effects of exon 5 in the rat brain. Electroneutral substitutions at this position restored pH sensitivity and, consequently, polyamine relief of tonic inhibition. This effect, together with the structural similarities between polyamines and the surface loop encoded by exon 5, suggest that exon 5 may act as a tethered pH-sensitive constitutive modulator of NMDA receptor function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Traynelis, S F -- Hartley, M -- Heinemann, S F -- NS08549/NS/NINDS NIH HHS/ -- NS28709/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1995 May 12;268(5212):873-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Emory University, Atlanta, GA 30322, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7754371" target="_blank"〉PubMed〈/a〉
    Keywords: *Alternative Splicing ; Amino Acid Sequence ; Animals ; Cell Line ; Exons ; Hydrogen-Ion Concentration ; Lysine/physiology ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Oocytes ; Protein Structure, Secondary ; *Protons ; Rats ; Receptors, N-Methyl-D-Aspartate/antagonists & ; inhibitors/chemistry/genetics/*physiology ; Spermine/*pharmacology ; Xenopus
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  • 94
    Publication Date: 1995-08-04
    Description: An immunoglobulin E (IgE)-dependent histamine-releasing factor (HRF) produced by lymphocytes of atopic children and present in biological fluids of allergic patients has been identified and purified. Amino-terminal sequencing revealed extensive homology to a mouse protein, p21, and its human homolog, p23. Both recombinant proteins caused histamine release from the human basophils of a subpopulation of donors, and this release was dependent on IgE. Polyclonal antibodies recognized and removed the biological activity of recombinant and native HRF. HRF identifies a heterogeneity of IgE and is believed to play a prominent role in chronic allergic disease processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉MacDonald, S M -- Rafnar, T -- Langdon, J -- Lichtenstein, L M -- AI 07290/AI/NIAID NIH HHS/ -- AI 32651/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1995 Aug 4;269(5224):688-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Johns Hopkins University School of Medicine, Johns Hopkins Asthma and Allergy Center, Baltimore, MD 21224, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7542803" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies/immunology ; Base Sequence ; Basophils/immunology ; *Biomarkers, Tumor ; Cell Line ; Cloning, Molecular ; *Histamine Release ; Humans ; Immunoglobulin E/*immunology ; Kinetics ; Lymphokines/*chemistry/immunology/isolation & purification/pharmacology ; Macrophages/metabolism ; Mice ; Molecular Sequence Data ; Recombinant Fusion Proteins/pharmacology ; Sequence Homology, Amino Acid
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  • 95
    Publication Date: 1995-04-21
    Description: Cytotoxicity by natural killer (NK) cells is inhibited by major histocompatibility complex (MHC) class I molecules on target cells. This inhibition may be mediated by NK receptors with different MHC specificities. A family of four NK-specific complementary DNAs (cDNAs), designated NKATs (NK-associated transcripts), was identified that encoded related transmembrane proteins, characterized by an extracellular region with two or three immunoglobulin-superfamily domains and by a cytoplasmic domain with an unusual antigen receptor activation motif (ARAM). The distribution of these cDNAs was clonotypic and correlated with NK cell inhibition by particular class I alleles. Thus, NKAT cDNAs may encode receptors for class I molecules on NK cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Colonna, M -- Samaridis, J -- New York, N.Y. -- Science. 1995 Apr 21;268(5209):405-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Basel Institute for Immunology, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7716543" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Antigens, Ly ; Base Sequence ; Blotting, Southern ; Cell Line ; Cloning, Molecular ; DNA, Complementary/genetics ; HLA-B Antigens/*immunology ; HLA-C Antigens/*immunology ; Humans ; Killer Cells, Natural/*immunology ; Lectins, C-Type ; Membrane Glycoproteins/chemistry ; Molecular Sequence Data ; Receptors, Immunologic/chemistry/*genetics/immunology ; Receptors, KIR ; Receptors, KIR2DL1 ; Receptors, KIR3DS1 ; Receptors, NK Cell Lectin-Like ; Sequence Alignment
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  • 96
    Publication Date: 1995-12-01
    Description: The phosphorylation of the human estrogen receptor (ER) serine residue at position 118 is required for full activity of the ER activation function 1 (AF-1). This Ser118 is phosphorylated by mitogen-activated protein kinase (MAPK) in vitro and in cells treated with epidermal growth factor (EGF) and insulin-like growth factor (IGF) in vivo. Overexpression of MAPK kinase (MAPKK) or of the guanine nucleotide binding protein Ras, both of which activate MAPK, enhanced estrogen-induced and antiestrogen (tamoxifen)-induced transcriptional activity of wild-type ER, but not that of a mutant ER with an alanine in place of Ser118. Thus, the activity of the amino-terminal AF-1 of the ER is modulated by the phosphorylation of Ser118 through the Ras-MAPK cascade of the growth factor signaling pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kato, S -- Endoh, H -- Masuhiro, Y -- Kitamoto, T -- Uchiyama, S -- Sasaki, H -- Masushige, S -- Gotoh, Y -- Nishida, E -- Kawashima, H -- Metzger, D -- Chambon, P -- New York, N.Y. -- Science. 1995 Dec 1;270(5241):1491-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Agricultural Chemistry, Tokyo University of Agriculture, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7491495" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cell Line ; Enzyme Activation ; Epidermal Growth Factor/pharmacology ; Estradiol/analogs & derivatives/pharmacology ; Estrogen Antagonists/pharmacology ; Humans ; Mitogen-Activated Protein Kinase Kinases ; Molecular Sequence Data ; Mutation ; Phosphorylation ; Polyunsaturated Alkamides ; Protein Kinases/metabolism ; Protein-Serine-Threonine Kinases/metabolism ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-raf ; Proto-Oncogene Proteins p21(ras)/metabolism ; Receptors, Estrogen/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Serine/*metabolism ; Somatomedins/pharmacology ; Tamoxifen/analogs & derivatives/pharmacology ; *Transcriptional Activation/drug effects ; Transfection
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  • 97
    Publication Date: 1995-01-27
    Description: Small changes in the peptide-major histocompatibility complex (MHC) molecule ligands recognized by antigen-specific T cell receptors (TCRs) can convert fully activating complexes into partially activating or even inhibitory ones. This study examined early TCR-dependent signals induced by such partial agonists or antagonists. In contrast to typical agonist ligands, both an antagonist and several partial agonists stimulated a distinct pattern of zeta chain phosphorylation and failed to activate associated ZAP-70 kinase. These results identify a specific step in the early tyrosine phosphorylation cascade that is altered after TCR engagement with modified peptide-MHC molecule complexes. This finding may explain the different biological responses to TCR occupancy by these variant ligands.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Madrenas, J -- Wange, R L -- Wang, J L -- Isakov, N -- Samelson, L E -- Germain, R N -- New York, N.Y. -- Science. 1995 Jan 27;267(5197):515-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lymphocyte Biology Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7824949" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Clone Cells ; Cytochrome c Group/pharmacology ; Enzyme Activation ; Histocompatibility Antigens Class II/genetics/immunology/*pharmacology ; Interleukin-2/biosynthesis ; L Cells (Cell Line) ; Ligands ; Lymphocyte Activation ; Membrane Proteins/*metabolism ; Mice ; Molecular Sequence Data ; Mutation ; Peptide Fragments/pharmacology ; Phosphorylation ; Protein-Tyrosine Kinases/*metabolism ; Receptors, Antigen, T-Cell/agonists/antagonists & inhibitors/*metabolism ; Signal Transduction ; T-Lymphocytes, Helper-Inducer/*immunology ; Tyrosine/metabolism ; ZAP-70 Protein-Tyrosine Kinase
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 98
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-07-28
    Description: The role of mitogen-activated protein (MAP) kinase cascades in integrating distinct upstream signals was studied in yeast. Mutants that were not able to activate PBS2 MAP kinase kinase (MAPKK; Pbs2p) at high osmolarity were characterized. Pbs2p was activated by two independent signals that emanated from distinct cell-surface osmosensors. Pbs2p was activated by MAP kinase kinase kinases (MAPKKKs) Ssk2p and Ssk22p that are under the control of the SLN1-SSK1 two-component osmosensor. Alternatively, Pbs2p was activated by a mechanism that involves the binding of its amino terminal proline-rich motif to the Src homology 3 (SH3) domain of a putative transmembrane osmosensor Sho1p.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maeda, T -- Takekawa, M -- Saito, H -- New York, N.Y. -- Science. 1995 Jul 28;269(5223):554-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Tumor Immunology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7624781" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Cloning, Molecular ; Enzyme Activation ; Fungal Proteins/metabolism ; Genes, Fungal ; Intracellular Signaling Peptides and Proteins ; MAP Kinase Kinase Kinases ; Mitogen-Activated Protein Kinase Kinases ; *Mitogen-Activated Protein Kinases ; Molecular Sequence Data ; Mutation ; Osmolar Concentration ; Phosphorylation ; Protein Kinases/*metabolism ; Protein-Serine-Threonine Kinases/*metabolism ; Saccharomyces cerevisiae/*enzymology/genetics ; *Saccharomyces cerevisiae Proteins ; Signal Transduction
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 99
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-09-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1995 Sep 22;269(5231):1673.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7569891" target="_blank"〉PubMed〈/a〉
    Keywords: Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; DNA-Binding Proteins/metabolism ; Enzyme Activation ; *Gene Expression Regulation ; Janus Kinase 1 ; Mitogen-Activated Protein Kinase 1 ; Phosphorylation ; Protein-Tyrosine Kinases/*metabolism ; STAT1 Transcription Factor ; STAT3 Transcription Factor ; *Signal Transduction ; Trans-Activators/*metabolism ; *Transcription, Genetic ; ras Proteins/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 100
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-02-10
    Description: Analyses of long-term experimental data from the Chihuahuan desert revealed that species diversity of other rodents was higher on plots from which kangaroo rats (Dipodomys spp.) had been removed. The difference was due to consistently higher colonization and lower extinction probabilities of small granivorous rodents in the absence of competitively dominant kangaroo rats. The results of this ecosystem experiment demonstrate the importance of both competitive exclusion and metapopulation dynamics for biological diversity in a natural community.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Valone, T J -- Brown, J H -- New York, N.Y. -- Science. 1995 Feb 10;267(5199):880-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of New Mexico, Albuquerque 87131.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7846530" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arizona ; Competitive Behavior ; Desert Climate ; Dipodomys/*physiology ; *Ecosystem ; Population Dynamics ; Probability ; Rodentia/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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