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  • Molecular Sequence Data  (26)
  • LUNAR AND PLANETARY EXPLORATION
  • 1995-1999  (28)
  • 1
    Publication Date: 1997-06-13
    Description: Mitochondrial DNA control region sequences were analyzed from 162 wolves at 27 localities worldwide and from 140 domestic dogs representing 67 breeds. Sequences from both dogs and wolves showed considerable diversity and supported the hypothesis that wolves were the ancestors of dogs. Most dog sequences belonged to a divergent monophyletic clade sharing no sequences with wolves. The sequence divergence within this clade suggested that dogs originated more than 100,000 years before the present. Associations of dog haplotypes with other wolf lineages indicated episodes of admixture between wolves and dogs. Repeated genetic exchange between dog and wolf populations may have been an important source of variation for artificial selection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vila, C -- Savolainen, P -- Maldonado, J E -- Amorim, I R -- Rice, J E -- Honeycutt, R L -- Crandall, K A -- Lundeberg, J -- Wayne, R K -- New York, N.Y. -- Science. 1997 Jun 13;276(5319):1687-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of California, Los Angeles, CA 90095-1606, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9180076" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Biological Evolution ; Breeding ; Carnivora/*genetics ; Crosses, Genetic ; DNA, Mitochondrial/*genetics ; Dogs/classification/*genetics ; Female ; Haplotypes ; Male ; Molecular Sequence Data ; Phylogeny ; Sequence Homology, Nucleic Acid
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  • 2
    Publication Date: 1999-10-16
    Description: The cystic fibrosis gene encodes a chloride channel, CFTR (cystic fibrosis transmembrane conductance regulator), that regulates salt and water transport across epithelial tissues. Phosphorylation of the cytoplasmic regulatory (R) domain by protein kinase A activates CFTR by an unknown mechanism. The amino-terminal cytoplasmic tail of CFTR was found to control protein kinase A-dependent channel gating through a physical interaction with the R domain. This regulatory activity mapped to a cluster of acidic residues in the NH(2)-terminal tail; mutating these residues proportionately inhibited R domain binding and CFTR channel function. CFTR activity appears to be governed by an interdomain interaction involving the amino-terminal tail, which is a potential target for physiologic and pharmacologic modulators of this ion channel.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Naren, A P -- Cormet-Boyaka, E -- Fu, J -- Villain, M -- Blalock, J E -- Quick, M W -- Kirk, K L -- DA10509/DA/NIDA NIH HHS/ -- DK50830/DK/NIDDK NIH HHS/ -- DK51868/DK/NIDDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1999 Oct 15;286(5439):544-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology and Biophysics, Gregory Fleming James Cystic Fibrosis Research Center, University of Alabama at Birmingham, Birmingham, AL 35294, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10521352" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Amino Acid Sequence ; Amino Acid Substitution ; Animals ; COS Cells ; Cyclic AMP/metabolism ; Cyclic AMP-Dependent Protein Kinases/metabolism ; Cystic Fibrosis Transmembrane Conductance ; Regulator/*chemistry/genetics/*metabolism ; DNA Mutational Analysis ; Humans ; *Ion Channel Gating ; Molecular Sequence Data ; Mutation ; Oocytes ; Patch-Clamp Techniques ; Phosphorylation ; Protein Structure, Secondary ; Recombinant Fusion Proteins/metabolism ; Xenopus
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  • 3
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-11-13
    Description: Persistent activation of p42 mitogen-activated protein kinase (p42 MAPK) during mitosis induces a "cytostatic factor" arrest, the arrest responsible for preventing the parthenogenetic activation of unfertilized eggs. The protein kinase p90 Rsk is a substrate of p42 MAPK; thus, the role of p90 Rsk in p42 MAPK-induced mitotic arrest was examined. Xenopus laevis egg extracts immunodepleted of Rsk lost their capacity to undergo mitotic arrest in response to activation of the Mos-MEK-1-p42 MAPK cascade of protein kinases. Replenishing Rsk-depleted extracts with catalytically competent Rsk protein restored the ability of the extracts to undergo mitotic arrest. Rsk appears to be essential for cytostatic factor arrest.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bhatt, R R -- Ferrell, J E Jr -- GM16415/GM/NIGMS NIH HHS/ -- GM46383/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Nov 12;286(5443):1362-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Pharmacology, Stanford University School of Medicine, Stanford, CA 94305-5332, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10558991" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CDC2 Protein Kinase/metabolism ; Cell Extracts ; Enzyme Activation ; MAP Kinase Kinase 1 ; MAP Kinase Signaling System ; Mitogen-Activated Protein Kinase 1/*metabolism ; Mitogen-Activated Protein Kinase Kinases/metabolism ; *Mitosis ; Molecular Sequence Data ; Ovum/*cytology/enzymology ; *Protein-Serine-Threonine Kinases ; Proto-Oncogene Proteins c-mos/*metabolism/pharmacology ; Ribosomal Protein S6 Kinases/*metabolism ; Xenopus laevis
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  • 4
    Publication Date: 1997-11-05
    Description: Reactive and potentially toxic cofactors such as copper ions are imported into eukaryotic cells and incorporated into target proteins by unknown mechanisms. Atx1, a prototypical copper chaperone protein from yeast, has now been shown to act as a soluble cytoplasmic copper(I) receptor that can adopt either a two- or three-coordinate metal center in the active site. Atx1 also associated directly with the Atx1-like cytosolic domains of Ccc2, a vesicular protein defined in genetic studies as a member of the copper-trafficking pathway. The unusual structure and dynamics of Atx1 suggest a copper exchange function for this protein and related domains in the Menkes and Wilson disease proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pufahl, R A -- Singer, C P -- Peariso, K L -- Lin, S J -- Schmidt, P J -- Fahrni, C J -- Culotta, V C -- Penner-Hahn, J E -- O'Halloran, T V -- GM-38047/GM/NIGMS NIH HHS/ -- GM-50016/GM/NIGMS NIH HHS/ -- GM-54111/GM/NIGMS NIH HHS/ -- R01 GM054111/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1997 Oct 31;278(5339):853-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Northwestern University, Evanston, IL 60208, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9346482" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *Carrier Proteins ; *Cation Transport Proteins ; Copper/*metabolism ; Escherichia coli ; Fungal Proteins/metabolism/*physiology ; Humans ; Molecular Chaperones/*physiology ; Molecular Sequence Data ; Recombinant Proteins ; Saccharomyces cerevisiae/metabolism/*physiology ; *Saccharomyces cerevisiae Proteins ; Sequence Homology, Amino Acid
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  • 5
    Publication Date: 1998-03-07
    Description: STATs (signal transducers and activators of transcription) are a family of transcription factors that are specifically activated to regulate gene transcription when cells encounter cytokines and growth factors. The crystal structure of an NH2-terminal conserved domain (N-domain) comprising the first 123 residues of STAT-4 was determined at 1.45 angstroms. The domain consists of eight helices that are assembled into a hook-like structure. The N-domain has been implicated in several protein-protein interactions affecting transcription, and it enables dimerized STAT molecules to polymerize and to bind DNA cooperatively. The structure shows that N-domains can interact through an extensive interface formed by polar interactions across one face of the hook. Mutagenesis of an invariant tryptophan residue at the heart of this interface abolished cooperative DNA binding by the full-length protein in vitro and reduced the transcriptional response after cytokine stimulation in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vinkemeier, U -- Moarefi, I -- Darnell, J E Jr -- Kuriyan, J -- AI32489/AI/NIAID NIH HHS/ -- AI34420/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1998 Feb 13;279(5353):1048-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Cell Biology and Laboratories of Molecular Biophysics, The Rockefeller University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9461439" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Cell Line ; Crystallography, X-Ray ; DNA/metabolism ; DNA-Binding Proteins/*chemistry/genetics/metabolism ; Humans ; Hydrogen Bonding ; Interferon-gamma/pharmacology ; Models, Molecular ; Molecular Sequence Data ; Oligodeoxyribonucleotides/metabolism ; *Protein Conformation ; Protein Structure, Tertiary ; STAT1 Transcription Factor ; STAT4 Transcription Factor ; Signal Transduction ; Trans-Activators/*chemistry/genetics/metabolism ; Transcription, Genetic ; Transfection ; src Homology Domains
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  • 6
    Publication Date: 1998-07-24
    Description: The transcription factor NFAT (nuclear factor of activated T cells) controls the expression of many immunomodulatory proteins. African swine fever virus inhibits proinflammatory cytokine expression in infected macrophages, and a viral protein A238L was found to display the activity of the immunosuppressive drug cyclosporin A by inhibiting NFAT-regulated gene transcription in vivo. This it does by binding the catalytic subunit of calcineurin and inhibiting calcineurin phosphatase activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miskin, J E -- Abrams, C C -- Goatley, L C -- Dixon, L K -- New York, N.Y. -- Science. 1998 Jul 24;281(5376):562-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Animal Health, Pirbright Laboratory, Pirbright, Surrey, GU24 0NF, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9677199" target="_blank"〉PubMed〈/a〉
    Keywords: African Swine Fever Virus/*physiology ; Amino Acid Sequence ; Animals ; Binding Sites ; Calcineurin/metabolism ; *Calcineurin Inhibitors ; Cell Nucleus/metabolism ; Cells, Cultured ; Cercopithecus aethiops ; Cyclosporine/pharmacology ; DNA-Binding Proteins/genetics/*metabolism ; Genes, Reporter ; Macrophages, Alveolar/*virology ; Molecular Sequence Data ; NF-kappa B/metabolism ; NFATC Transcription Factors ; *Nuclear Proteins ; Recombinant Proteins/metabolism ; Swine ; Transcription Factors/genetics/*metabolism ; *Transcription, Genetic ; Vero Cells ; Viral Proteins/genetics/*metabolism
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  • 7
    Publication Date: 1997-11-21
    Description: The gene responsible for autosomal dominant, fully penetrant, nonsyndromic sensorineural progressive hearing loss in a large Costa Rican kindred was previously localized to chromosome 5q31 and named DFNA1. Deafness in the family is associated with a protein-truncating mutation in a human homolog of the Drosophila gene diaphanous. The truncation is caused by a single nucleotide substitution in a splice donor, leading to a four-base pair insertion in messenger RNA and a frameshift. The diaphanous protein is a profilin ligand and target of Rho that regulates polymerization of actin, the major component of the cytoskeleton of hair cells of the inner ear.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lynch, E D -- Lee, M K -- Morrow, J E -- Welcsh, P L -- Leon, P E -- King, M C -- R01-DC01076/DC/NIDCD NIH HHS/ -- New York, N.Y. -- Science. 1997 Nov 14;278(5341):1315-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Washington, Seattle, WA 98195, USA. eric@lynch.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9360932" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/*metabolism ; *Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Animals ; Base Sequence ; Carrier Proteins/chemistry/*genetics/physiology ; Chromosome Mapping ; Chromosomes, Human, Pair 5 ; Cochlea/metabolism ; *Contractile Proteins ; Deafness/*genetics/metabolism/pathology ; Drosophila/genetics ; *Drosophila Proteins ; Female ; Frameshift Mutation ; GTP-Binding Proteins/metabolism ; Gene Expression ; Hair Cells, Auditory/*metabolism/ultrastructure ; Humans ; Male ; Microfilament Proteins/metabolism ; Molecular Sequence Data ; Pedigree ; Profilins ; RNA Splicing ; RNA, Messenger/genetics/metabolism ; X Chromosome
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  • 8
    Publication Date: 1997-02-14
    Description: Heterodimerization between members of the Bcl-2 family of proteins is a key event in the regulation of programmed cell death. The molecular basis for heterodimer formation was investigated by determination of the solution structure of a complex between the survival protein Bcl-xL and the death-promoting region of the Bcl-2-related protein Bak. The structure and binding affinities of mutant Bak peptides indicate that the Bak peptide adopts an amphipathic alpha helix that interacts with Bcl-xL through hydrophobic and electrostatic interactions. Mutations in full-length Bak that disrupt either type of interaction inhibit the ability of Bak to heterodimerize with Bcl-xL.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sattler, M -- Liang, H -- Nettesheim, D -- Meadows, R P -- Harlan, J E -- Eberstadt, M -- Yoon, H S -- Shuker, S B -- Chang, B S -- Minn, A J -- Thompson, C B -- Fesik, S W -- P01 A135294/PHS HHS/ -- R37 CA48023/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1997 Feb 14;275(5302):983-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Pharmaceutical Discovery Division, Abbott Laboratories, Abbott Park, IL 60064, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9020082" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Apoptosis ; Crystallography, X-Ray ; Dimerization ; Magnetic Resonance Spectroscopy ; Membrane Proteins/*chemistry/genetics/metabolism ; Models, Molecular ; Molecular Sequence Data ; *Protein Conformation ; Protein Structure, Secondary ; Proto-Oncogene Proteins/*chemistry/metabolism ; *Proto-Oncogene Proteins c-bcl-2 ; Sequence Deletion ; bcl-2 Homologous Antagonist-Killer Protein ; bcl-X Protein
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  • 9
    Publication Date: 1998-04-16
    Description: The molecular basis for autosomal dominant progressive nonsyndromic hearing loss in an Israeli Jewish family, Family H, has been determined. Linkage analysis placed this deafness locus, DFNA15, on chromosome 5q31. The human homolog of mouse Pou4f3, a member of the POU-domain family of transcription factors whose targeted inactivation causes profound deafness in mice, was physically mapped to the 25-centimorgan DFNA15-linked region. An 8-base pair deletion in the POU homeodomain of human POU4F3 was identified in Family H. A truncated protein presumably impairs high-affinity binding of this transcription factor in a dominant negative fashion, leading to progressive hearing loss.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vahava, O -- Morell, R -- Lynch, E D -- Weiss, S -- Kagan, M E -- Ahituv, N -- Morrow, J E -- Lee, M K -- Skvorak, A B -- Morton, C C -- Blumenfeld, A -- Frydman, M -- Friedman, T B -- King, M C -- Avraham, K B -- R01 DC01076/DC/NIDCD NIH HHS/ -- Z01 DC 00039/DC/NIDCD NIH HHS/ -- New York, N.Y. -- Science. 1998 Mar 20;279(5358):1950-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Human Genetics, Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9506947" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Cell Differentiation ; Chromosome Mapping ; Chromosomes, Human, Pair 5/genetics ; Deafness/*genetics ; Female ; Gene Expression ; Genetic Linkage ; Hair Cells, Auditory/cytology/physiology ; Hearing Loss, Sensorineural/*genetics ; Homeodomain Proteins/*genetics/metabolism ; Humans ; Israel ; Jews/genetics ; Male ; Mice ; Middle Aged ; Molecular Sequence Data ; Pedigree ; Polymerase Chain Reaction ; Protein Structure, Secondary ; Sequence Deletion ; Transcription Factor Brn-3C ; Transcription Factors/*genetics/metabolism/physiology
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  • 10
    Publication Date: 1998-06-06
    Description: Detection of human immunodeficiency virus-type 1 (HIV-1) on only one or a few occasions in infants born to infected mothers has been interpreted to indicate that infection may be transient rather than persistent. Forty-two cases of suspected transient HIV-1 viremia among 1562 perinatally exposed seroreverting infants and one mother were reanalyzed. HIV-1 env sequences were not found in specimens from 20; in specimens from 6, somatic genetic analysis revealed that specimens were mistakenly attributed to an infant; and in specimens from 17, phylogenetic analysis failed to demonstrate the expected linkage between the infant's and the mother's virus. These findings argue that transient HIV-1 infection, if it exists, will only rarely be satisfactorily documented.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frenkel, L M -- Mullins, J I -- Learn, G H -- Manns-Arcuino, L -- Herring, B L -- Kalish, M L -- Steketee, R W -- Thea, D M -- Nichols, J E -- Liu, S L -- Harmache, A -- He, X -- Muthui, D -- Madan, A -- Hood, L -- Haase, A T -- Zupancic, M -- Staskus, K -- Wolinsky, S -- Krogstad, P -- Zhao, J -- Chen, I -- Koup, R -- Ho, D -- Korber, B -- Apple, R J -- Coombs, R W -- Pahwa, S -- Roberts, N J Jr -- AI27757/AI/NIAID NIH HHS/ -- AI32910/AI/NIAID NIH HHS/ -- UO1-27658/PHS HHS/ -- etc. -- New York, N.Y. -- Science. 1998 May 15;280(5366):1073-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, University of Rochester, Rochester, NY 14642, USA. lfrenkel@u.washington.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9582120" target="_blank"〉PubMed〈/a〉
    Keywords: DNA, Viral/analysis/genetics ; Diagnostic Errors ; Equipment Contamination ; Female ; Genes, env ; HIV Infections/immunology/transmission/*virology ; HIV-1/*genetics/*isolation & purification ; Humans ; Infant ; Infant, Newborn ; Infectious Disease Transmission, Vertical ; Molecular Sequence Data ; Phylogeny ; Polymerase Chain Reaction ; RNA, Viral/analysis ; *Specimen Handling ; T-Lymphocytes, Cytotoxic/immunology ; Viremia/virology
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