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  • Articles  (3,950)
  • Cell & Developmental Biology  (2,589)
  • Female  (628)
  • Mutation  (609)
  • Phosphorylation  (284)
  • Chemical Engineering
  • General Chemistry
  • 1995-1999  (3,498)
  • 1945-1949  (452)
  • Medicine  (3,950)
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  • Articles  (3,950)
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  • 1
    Electronic Resource
    Electronic Resource
    Analysis of potential phosphorylation sites in human T cell leukemia virus type 1 Tax (1999)
    Springer
    Journal of biomedical science 6 (1999), S. 206-212 
    Details
    ISSN: 1423-0127
    Keywords: Tax ; HTLV-1 ; Trans-activation ; Phosphorylation ; Mutagenesis ; Transcription ; Genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The human T cell leukemia virus type 1 (HTLV-1) Tax is a phosphoprotein, however, the contribution of phosphorylation to Tax activity is unknown. Previous studies have shown that phosphorylation of Tax occurs on serine residue(s), within one tryptic fragment, in response to 4β-phorbol-12β-myristate-13α-acetate, in both mouse and human cells. Studies were conducted in multiple cell lines to identify the specific phosphorylated serines as a prelude to functional analysis. The phosphorylation pattern of Tax was found to be different in 293T and COS-7 cells in comparison with MT-4 and Px-1 cells. However, one tryptic fragment remained consistent in comigration analyses among all cell lines. Using selected Tax serine mutants a tryptic fragment containing a serine at residue 113 believed to be the site of phosphorylation of Tax did not comigrate with the common phosphorylated tryptic fragment. Analysis of selected Tax mutants for ability totrans-activate the cytomegalovirus promoter demonstrated mutation of serine 77 to alanine reducedtrans-activation by 90% compared to wild-type Tax. However, examination of the phosphorylation pattern of the serine 77 mutant demonstrated that it is not the site of phosphorylation. These studies demonstrate the importance of using relevant cell lines to characterize the role of phosphorylation in protein function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02255904
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  • 2
    Electronic Resource
    Electronic Resource
    The structure of the llama heavy chain constant genes reveals a mechanism for heavy-chain antibody formation (1999)
    Springer
    Immunogenetics 50 (1999), S. 98-101 
    Details
    ISSN: 1432-1211
    Keywords: Key words Llama ; splice ; CH1 ; Antibody ; Mutation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002510050694
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  • 3
    Electronic Resource
    Electronic Resource
    Genomic organization of the HSET locus and the possible association of HLA-linked genes with immotile cilia syndrome (ICS) (1999)
    Springer
    Immunogenetics 49 (1999), S. 644-652 
    Details
    ISSN: 1432-1211
    Keywords: Key words HLA complex ; Immotile cilia syndrome ; Mutation ; Kinesin multigene family ; Human Chromosome 6
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  The kinesin-related protein (HSET) gene belongs to the kinesin superfamily, the members of which are involved in cellular transport processes. The HSET gene product was previously characterized by partial cDNA sequencing. The gene is located on the short arm of human Chromosome 6 (6p21.3), at the centromeric end of the major histocompatibility complex. Here, we report the genomic structure of the complete HSET gene together with its flanking loci. Sequence analysis of the 40 kilobase (kb) cosmid clone containing the HSET gene also revealed the presence of several new genes not related to the kinesin superfamily. These include a 60S ribosomal protein L35A-like pseudogene (rPL35A-like) on the telomeric side and a polycomb-like gene (PHF1), a copper tolerance-like gene (CUTA1) and the 5' part of the synaptic ras-GTPase-activating protein (SynGAP) gene centromeric of HSET. In addition, a complete 60S ribosomal protein L12-like (rPL12L) gene in intron 3 of the HSET gene was identified which appears to have an open reading frame. The possible involvement of the HSET gene and a β-tubulin gene (TUBB) in the pathogenesis of immotile cilia syndrome (ICS) was studied by screening two unrelated ICS families with microtubular defects and suspected HLA linkage for mutations within the HSET gene and the TUBB gene. Four single base substitutions were detected in the HSET gene, and none in the TUBB gene. On the basis of these data, a role of the HSET and TUBB products in the pathogenesis of ICS in the two families is unlikely.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002510050660
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  • 4
    Electronic Resource
    Electronic Resource
    Germline mutations of E-cadherin gene in Korean familial gastric cancer patients (1999)
    Springer
    Journal of human genetics 44 (1999), S. 177-180 
    Details
    ISSN: 1435-232X
    Keywords: Key words Familial gastric cancer ; E-cadherin ; Germline ; Mutation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Gastric cancer is the most common cancer in Korea. Germline mutations of the E-cadherin gene have recently been identified in familial gastric cancer patients. We screened five Korean familial gastric cancer patients to investigate germline mutations of the E-cadherin gene. These patients fulfilled the following criteria: presence of at least two gastric cancer patients within first-degree relatives and one patient diagnosed before the age of 50 years. Abnormal band patterns were found in exons 6 and 10 in two familial gastric cancer patients by polymerase chain reaction-single strand conformation polymorphism analysis (probands from the SNU-G2 and SNU-G1001 families, respectively). DNA sequencing analysis of the E-cadherin gene of these two patients revealed missense mutations in each exon. The SNU-G2 proband harbored a missense mutation from aspartic acid (GAT) to glycine (GGT) at codon 244 in exon 6 of the E-cadherin gene, and the SNU-G1001 proband had a missense mutation from valine (GTG) to alanine (GCG) at codon 487 in exon 10. The SNU-G2 proband was diagnosed with gastric cancer at the age of 38; three brothers and two sisters had died of gastric cancer under the age of 50, and their mother had died of gastric cancer at the age of 63. The SNU-G1001 proband was diagnosed with gastric cancer at the age of 42 and one brother had died of gastric cancer at the age of 49. In summary, we found germline mutations of the E-cadherin gene in two of five Korean familial gastric cancer patients screened.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100380050137
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  • 5
    Electronic Resource
    Electronic Resource
    Molecular characterization of galactokinase deficiency in Japanese patients (1999)
    Springer
    Journal of human genetics 44 (1999), S. 377-382 
    Details
    ISSN: 1435-232X
    Keywords: Key words Galactosemia ; Galactokinase (GALK) ; Mutation ; Genotype ; Phenotype
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Galactokinase (GALK) deficiency is an autosomal recessive disorder, which causes cataract formation in children not maintained on a lactose-free diet. We characterized the human GALK gene by screening a Japanese genomic DNA phage library, and found that several nucleotides in the 5′-untranslated region and introns 1, 2, and 5 in our GALK genomic analysis differed from published data. A 20-bp tandem repeat was found in three places in intron 5, which were considered insertion sequences. We identified five novel mutations in seven unrelated Japanese patients with GALK deficiency. There were three missense mutations and two deletions. All three missense mutations (R256W, T344M, and G349S) occurred at CpG dinucleotides, and the T344M and G349S mutations occurred in the conserved region. The three missense mutations led to a drastic reduction in GALK activity when individual mutant cDNAs were expressed in a mammalian cell system. These findings indicated that these missense mutations caused GALK deficiency. The two deletions, of 410delG and 509–510delGT, occurred at the nucleotide repeats GGGGGG and GTGTGT, respectively, and resulted in in-frame nonsense codons at amino acids 163 and 201. These mutations arose by slipped strand mispairing. All five mutations occurred at hot spots in the CpG dinucleotide for missense mutations and in short direct repeats for deletions. These five mutations in Japanese have not yet been identified in Caucasians. We speculate that the origin of GALK mutations in Japanese is different from that in Caucasians.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100380050182
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  • 6
    Electronic Resource
    Electronic Resource
    Molecular characterization of 6-pyruvoyl-tetrahydropterin synthase deficiency in Japanese patients (1999)
    Springer
    Journal of human genetics 44 (1999), S. 163-168 
    Details
    ISSN: 1435-232X
    Keywords: Key words 6-Pyruvoyl-tetrahydropterin synthase (PTPS) deficiency ; Tetrahydrobiopterin ; Mutation ; Missense ; Splicing ; Phenotype and genotype
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract We identified three mutations in four Japanese patients with central type 6-pyruvoyl-tetrahydropterin synthase (PTPS) deficiency. One missense mutation was a C-to-T transition, resulting in the substitution of Pro by Ser at codon 87 (P87S) in exon 5. Another missense mutation was a G-to-A transition, resulting in the substitution of Asp by Asn at codon 96 (D96N) in exon 5. A splicing mutation was found by skipping of exon 4 on PTPS mRNA analysis, and a G-to-A transition at the third base of codon 81 (E81E) and at the terminal base in exon 4 were detected on genomic PTPS DNA analysis. The E81E mutation affected the splice donor site of exon 4 and caused the splicing error. In COS cell expression analysis, the P87S and D96N mutant constructs revealed, respectively, 52% and 10% of wild-type activity. Patients with P87S/P87S (52%/52% in-vitro PTPS activity) exhibited 0.11 and 0 μU/g hemoglobin [Hb] in erythrocyte PTPS activity (wild-type control: 11-29 μU/gHb) erythrocyte PTPS activity, and the patient with P87S/D96N mutations (52%/10%) had 0.97 μU/gHb in PTPS erythrocyte activity. The PTPS erythrocyte activity did not coincide with the in-vitro PTPS activity based on patient genotype.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100380050134
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  • 7
    Electronic Resource
    Electronic Resource
    Mutational analysis of TSC1 and TSC2 genes in Japanese patients with tuberous sclerosis complex (1999)
    Springer
    Journal of human genetics 44 (1999), S. 391-396 
    Details
    ISSN: 1435-232X
    Keywords: Key words Tuberous sclerosis complex ; TSC1 gene ; TSC2 gene ; Hamartin ; Tuberin ; Mutation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract We have surveyed the mutations of TSC1 and TSC2 from 38 (25 sporadic, 11 familial, and 2 unknown) Japanese patients with tuberous sclerosis complex. In 23 of 38 subjects, we detected 18 new mutations in addition to 4 mutations that had been previously reported. We also found 3 new polymorphisms. The mutations were not clustered on a particular exon in either of the genes. Seven TSC1 mutations found in 3 familial and 4 sporadic cases were on the exons (3 missense, 2 nonsense point mutations, a 1-base insertion, and a 2-bp deletion). Fifteen TSC2 mutations were found in 5 familial cases, 10 sporadic cases, and 1 unknown case. The 12 mutations were on the exons (8 missense, 1 nonsense point mutations, a 1-bp insertion, a 5-bp deletion, and a 4-bp replacement) and 3 point mutations were on the exon–intron junctions. Although the patients with TSC2 mutations tend to exhibit relatively severe mental retardation in comparison to those with TSC1 mutations, a genotype–phenotype correlation could not yet be established. The widespread distribution of TSC1/TSC2 mutations hinders the development of a simple diagnostic test, and the identification of individual mutations does not provide the prediction of prognosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100380050185
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  • 8
    Electronic Resource
    Electronic Resource
    Molecular analysis of methylmalonyl-CoA mutase deficiency: identification of three missense mutations in mut 0 patients (1999)
    Springer
    Journal of human genetics 44 (1999), S. 35-39 
    Details
    ISSN: 1435-232X
    Keywords: Key words Methylmalonic acidemia ; Methylmalonyl-CoA mutase ; Adenosylcobalamin ; Organic aciduria ; Mutation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Genetic defects in the methylmalonyl-CoA mutase (MCM) gene cause methylmalonic acidemia (MMA). Only three mutations have been reported among Oriental patients to date. We studied fibroblast cell lines established from three Japanese patients with MCM deficiency. Enzymatic study showed that these patients had the mut 0 type of MMA. Nucleotide sequencing of MCM cDNAs identified three missense mutations: a T to A change at nucleotide position 2082, which results in an amino acid substitution of Glu669 for valine (V669E); a T to A change at position 1179 with the corresponding amino acid substitution of Asp368 for valine (V368D); and a G to A change at position 1182 with the corresponding amino acid substitution of His369 for arginine (R369H). Each of the three missense mutations abolished MCM activity according to a transient expression study. Alignment of these mutations with a recently reported homology model of human MCM allowed us to speculate on the effect of these nonconservative amino acid substitutions on MCM activity: V368D and R369H affected residues in the β/α-(TIM-) barrel domain, on one of the two α-helices that form the dimer interface, while V669E altered a residue in the adenosylcobalamin-binding domain in the C terminus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100380050103
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  • 9
    Electronic Resource
    Electronic Resource
    EYA1 nonsense mutation in a Japanese branchio-oto-renal syndrome family (1999)
    Springer
    Journal of human genetics 44 (1999), S. 261-265 
    Details
    ISSN: 1435-232X
    Keywords: Key words Branchio-oto-renal (BOR) syndrome ; EYA1 ; Mutation ; Japanese ; Hearing impairment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Advances in molecular genetics have recently revealed that mutations in the EYA1 gene are responsible for branchio-oto-renal (BOR) syndrome in European and other populations. This is the first report confirming that an EYA1 gene mutation is also disease-causing in an Asian population. We have described one Japanese BOR syndrome family showing a novel mutation in exon 7 of the EYA1 gene. There was extensive variation of clinical phenotypes within this family. When the physician is confronted with a BOR family showing a wide variation in clinical expression, molecular genetic testing helps to achieve accurate diagnosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100380050156
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  • 10
    Electronic Resource
    Electronic Resource
    A new single-nucleotide polymorphism in the seventh component of complement (C7) gene (1999)
    Springer
    Journal of human genetics 44 (1999), S. 272-273 
    Details
    ISSN: 1435-232X
    Keywords: Key words Complement ; C7 ; Mutation ; Polymorphism ; Population genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A new single-nucleotide polymorphism has been found in the 3′ untranslated region of the complement component C7 gene. It is present with similar frequencies in the Japanese and Germans. This polymorphism would be a useful marker in the genetic study of C6 and C7 deficiencies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100380050160
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  • 11
    Electronic Resource
    Electronic Resource
    Four novel mutations of the Fanconi anemia group A gene (FAA) in Japanese patients (1999)
    Springer
    Journal of human genetics 44 (1999), S. 48-51 
    Details
    ISSN: 1435-232X
    Keywords: Key words Fanconi anemia ; FAA gene ; Mutation ; Polymorphism ; SSCP ; Direct sequencing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Fanconi anemia (FA) is an autosomal recessive disorder characterized by pancytopenia, predisposition to cancers, and a diverse variety of congenital malformations. At least eight complementation groups, A through H, have been described. Recently, the FA-A gene (FAA) has been isolated, and a large number of distinct mutations reported in ethnically diverse FA-A patients. Here, we report on the mutation analysis of five FA patients by single-strand conformation polymorphism. Out of five patients, at least three were found to have mutations in the FAA gene. The first patient was a compound heterozygote with a 1-bp deletion and a single-base substitution. The second patient had a heterozygous 2-bp deletion, which introduces a premature termination codon, and the third patient had a heterozygous splice donor site mutation in intron 27.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100380050106
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  • 12
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    Bid for better beef gives Japan a leg up on cattle (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-01-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Normile, D -- New York, N.Y. -- Science. 1998 Dec 11;282(5396):1975-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9874644" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Husbandry/*methods ; Animals ; Blastocyst ; Cattle/embryology/*genetics ; Cell Differentiation ; Cells, Cultured ; *Cloning, Organism ; Embryo Transfer/veterinary ; Fallopian Tubes/cytology ; Female ; Japan ; *Nuclear Transfer Techniques ; Oocytes ; Ovarian Follicle/cytology ; Pregnancy
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 13
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    Worming secrets from the C. elegans genome (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-01-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1998 Dec 11;282(5396):1972-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9874643" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/cytology/*genetics/physiology ; Cell Lineage ; Chromosome Mapping ; DNA, Helminth/chemistry/genetics ; Evolution, Molecular ; Gene Expression Regulation ; *Genes, Helminth ; Genetic Techniques ; *Genome ; Humans ; Mutation ; *Sequence Analysis, DNA
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 14
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    Heat shock protein mutes genetic changes (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-01-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1998 Dec 4;282(5395):1796.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9874626" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Crosses, Genetic ; Drosophila/*genetics ; Female ; *Genes, Insect ; HSP90 Heat-Shock Proteins/genetics/*physiology ; Insect Proteins/genetics/physiology ; Male ; *Mutation ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 15
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    How chromatin changes its shape (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hagmann, M -- New York, N.Y. -- Science. 1999 Aug 20;285(5431):1200-1, 1203.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10484727" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Acetyltransferases/chemistry/metabolism ; Animals ; Cell Cycle Proteins/chemistry/metabolism ; Chromatin/chemistry/*metabolism/*ultrastructure ; *Gene Expression Regulation ; Histone Acetyltransferases ; Histones/*metabolism ; Methylation ; *Mitosis ; Phosphorylation ; Protein Structure, Secondary ; Protein-Arginine N-Methyltransferases/metabolism ; Transcription Factors ; p300-CBP Transcription Factors
    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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  • 16
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    Postdoctoral patterns, career advancement, and problems (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-08
    Description: Postdoctoral appointments can have different functions and meanings, depending on the field and whether the postdoc is a man or a woman. The Ph.D.'s-Ten Years Later study confirmed that in biochemistry, the postdoc, not the Ph.D., has become the general proving ground for excellence both in academia and industry. Because they spent a longer time in these "mandatory" postdocs, biochemists had the largest proportion of untenured faculty 10 to 13 years after the Ph. D. In mathematics, where substantially fewer postdoctoral positions are available, Ph.D.'s taking postdocs are more likely to obtain faculty positions, but this is true only for men. University administrators should be accountable for monitoring the total time spent in these positions and should provide administrative assistance for skills training, career growth, and the job search. In addition, creative solutions concerning the dual-career couple phenomenon are necessary.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nerad, M -- Cerny, J -- New York, N.Y. -- Science. 1999 Sep 3;285(5433):1533-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Graduate Division, University of California, Berkeley, 424 Sproul Hall, Berkeley, CA 94720-5900, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10477510" target="_blank"〉PubMed〈/a〉
    Keywords: *Biochemistry/education ; *Career Mobility ; *Education, Graduate ; Employment ; Faculty ; *Fellowships and Scholarships ; Female ; Humans ; Male ; *Mathematics ; Salaries and Fringe Benefits ; Societies, Scientific ; Time Factors ; United States ; Universities
    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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  • 17
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    Affinity-driven peptide selection of an NFAT inhibitor more selective than cyclosporin A (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-25
    Description: The flow of information from calcium-mobilizing receptors to nuclear factor of activated T cells (NFAT)-dependent genes is critically dependent on interaction between the phosphatase calcineurin and the transcription factor NFAT. A high-affinity calcineurin-binding peptide was selected from combinatorial peptide libraries based on the calcineurin docking motif of NFAT. This peptide potently inhibited NFAT activation and NFAT-dependent expression of endogenous cytokine genes in T cells, without affecting the expression of other cytokines that require calcineurin but not NFAT. Substitution of the optimized peptide sequence into the natural calcineurin docking site increased the calcineurin responsiveness of NFAT. Compounds that interfere selectively with the calcineurin-NFAT interaction without affecting calcineurin phosphatase activity may be useful as therapeutic agents that are less toxic than current drugs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aramburu, J -- Yaffe, M B -- Lopez-Rodriguez, C -- Cantley, L C -- Hogan, P G -- Rao, A -- R01 AI 40127/AI/NIAID NIH HHS/ -- R01 GM056203/GM/NIGMS NIH HHS/ -- R01 HL 03601/HL/NHLBI NIH HHS/ -- R43 AI 43726/AI/NIAID NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1999 Sep 24;285(5436):2129-33.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10497131" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Calcineurin/*metabolism ; Calcineurin Inhibitors ; Cell Nucleus/metabolism ; Cyclosporine/pharmacology ; Cytokines/biosynthesis/genetics ; DNA-Binding Proteins/*antagonists & inhibitors/chemistry/metabolism ; Gene Expression Regulation ; Genes, Reporter ; HeLa Cells ; Humans ; Immunosuppressive Agents/chemistry/metabolism/*pharmacology ; Jurkat Cells ; Molecular Sequence Data ; NFATC Transcription Factors ; *Nuclear Proteins ; Oligopeptides/chemistry/metabolism/*pharmacology ; Peptide Library ; Peptides/chemistry/metabolism/*pharmacology ; Phosphorylation ; Recombinant Fusion Proteins/metabolism ; T-Lymphocytes/*drug effects/immunology ; Transcription Factors/*antagonists & inhibitors/chemistry/metabolism ; Transfection
    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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  • 18
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    Shifting RNA polymerase into overdrive (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-05-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Landick, R -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):598-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Bacteriology, University of Wisconsin-Madison, Madison, WI 53706, USA. landick@macc.wisc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10328742" target="_blank"〉PubMed〈/a〉
    Keywords: Base Pairing ; Binding Sites ; DNA/chemistry/*metabolism ; DNA-Directed RNA Polymerases/genetics/*metabolism ; Escherichia coli/enzymology/genetics ; Gene Expression Regulation ; Humans ; Models, Genetic ; Mutation ; Nucleic Acid Conformation ; Oligodeoxyribonucleotides, Antisense/chemistry/metabolism ; RNA, Messenger/chemistry/*metabolism ; *Terminator Regions, Genetic ; *Transcription, Genetic ; Viral 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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    New model for hereditary breast cancer (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-05-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hagmann, M -- New York, N.Y. -- Science. 1999 Apr 30;284(5415):723, 725.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10336390" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Breast Neoplasms/*genetics/pathology ; *Disease Models, Animal ; Female ; *Genes, BRCA1 ; Genes, p53 ; Humans ; Mammary Glands, Animal/pathology ; Mammary Neoplasms, Animal/*genetics/pathology ; Mice ; Mice, Knockout ; Mice, Transgenic ; Mutation
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  • 20
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    Requirement of ATM-dependent phosphorylation of brca1 in the DNA damage response to double-strand breaks (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-11-05
    Description: The Brca1 (breast cancer gene 1) tumor suppressor protein is phosphorylated in response to DNA damage. Results from this study indicate that the checkpoint protein kinase ATM (mutated in ataxia telangiectasia) was required for phosphorylation of Brca1 in response to ionizing radiation. ATM resides in a complex with Brca1 and phosphorylated Brca1 in vivo and in vitro in a region that contains clusters of serine-glutamine residues. Phosphorylation of this domain appears to be functionally important because a mutated Brca1 protein lacking two phosphorylation sites failed to rescue the radiation hypersensitivity of a Brca1-deficient cell line. Thus, phosphorylation of Brca1 by the checkpoint kinase ATM may be critical for proper responses to DNA double-strand breaks and may provide a molecular explanation for the role of ATM in breast cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cortez, D -- Wang, Y -- Qin, J -- Elledge, S J -- GM44664/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Nov 5;286(5442):1162-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Verna and Mars McLean Department of Biochemistry and Molecular Biology, Howard Hughes Medical Institute, 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/10550055" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Ataxia Telangiectasia/genetics ; Ataxia Telangiectasia Mutated Proteins ; BRCA1 Protein/*metabolism ; Breast Neoplasms/genetics ; Cell Cycle Proteins ; Cell Line ; *DNA Damage ; *DNA Repair ; DNA, Complementary ; DNA-Binding Proteins ; Female ; Gamma Rays ; Genes, BRCA1 ; Genetic Predisposition to Disease ; HeLa Cells ; Heterozygote ; Humans ; Molecular Sequence Data ; Mutation ; Phosphorylation ; Protein-Serine-Threonine Kinases/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Tumor Suppressor Proteins
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  • 21
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    Stimulation of microtubule aster formation and spindle assembly by the small GTPase Ran (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-05-21
    Description: Ran, a small guanosine triphosphatase, is suggested to have additional functions beyond its well-characterized role in nuclear trafficking. Guanosine triphosphate-bound Ran, but not guanosine diphosphate-bound Ran, stimulated polymerization of astral microtubules from centrosomes assembled on Xenopus sperm. Moreover, a Ran allele with a mutation in the effector domain (RanL43E) induced the formation of microtubule asters and spindle assembly, in the absence of sperm nuclei, in a gammaTuRC (gamma-tubulin ring complex)- and XMAP215 (Xenopus microtubule associated protein)-dependent manner. Therefore, Ran could be a key signaling molecule regulating microtubule polymerization during mitosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilde, A -- Zheng, Y -- GM56312-01/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 May 21;284(5418):1359-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Carnegie Institution of Washington, Department of Embryology, Baltimore, MD 21210, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10334991" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Extracts ; Cell Nucleus/metabolism ; Centrosome/physiology ; Dimethyl Sulfoxide/pharmacology ; Dyneins/physiology ; GTP Phosphohydrolases/genetics/*metabolism ; Guanosine Diphosphate/metabolism ; Guanosine Triphosphate/*metabolism ; Male ; Microtubule-Associated Proteins/metabolism ; Microtubules/*metabolism/ultrastructure ; Mutation ; Nuclear Proteins/analysis/genetics/*metabolism/pharmacology ; Ovum ; Recombinant Fusion Proteins/metabolism/pharmacology ; Sperm Head/physiology ; Spindle Apparatus/chemistry/*metabolism/ultrastructure ; Tubulin/analysis/metabolism ; Xenopus ; *Xenopus Proteins ; ran GTP-Binding Protein
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  • 22
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    Requirement of yeast SGS1 and SRS2 genes for replication and transcription (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-12-22
    Description: The SGS1 gene of the yeast Saccharomyces cerevisiae encodes a DNA helicase with homology to the human Bloom's syndrome gene BLM and the Werner's syndrome gene WRN. The SRS2 gene of yeast also encodes a DNA helicase. Simultaneous deletion of SGS1 and SRS2 is lethal in yeast. Here, using a conditional mutation of SGS1, it is shown that DNA replication and RNA polymerase I transcription are drastically inhibited in the srs2Delta sgs1-ts strain at the restrictive temperature. Thus, SGS1 and SRS2 function in DNA replication and RNA polymerase I transcription. These functions may contribute to the various defects observed in Werner's and Bloom's syndromes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, S K -- Johnson, R E -- Yu, S L -- Prakash, L -- Prakash, S -- CA80882/CA/NCI NIH HHS/ -- GM19261/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Dec 17;286(5448):2339-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Sealy Center for Molecular Science, University of Texas Medical Branch at Galveston, 6.104 Medical Research Building, 11th and Mechanic Streets, Galveston, TX 77555-1061, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10600744" target="_blank"〉PubMed〈/a〉
    Keywords: Bloom Syndrome/genetics ; Codon ; DNA Helicases/genetics/*physiology ; *DNA Replication ; DNA, Fungal/biosynthesis ; Fungal Proteins/genetics/*physiology ; Gene Deletion ; Genes, Fungal ; Humans ; Mutation ; RNA Polymerase I/metabolism ; RNA Polymerase II/metabolism ; RNA Polymerase III/metabolism ; RNA, Fungal/biosynthesis ; RNA, Messenger/biosynthesis/genetics ; RNA, Ribosomal/biosynthesis ; RNA, Transfer, Amino Acid-Specific/biosynthesis ; RecQ Helicases ; Saccharomyces cerevisiae/*genetics/metabolism ; *Saccharomyces cerevisiae Proteins ; *Transcription, Genetic ; Werner Syndrome/genetics
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  • 23
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    Regulation of intestinal alpha-defensin activation by the metalloproteinase matrilysin in innate host defense (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-10-03
    Description: Precursors of alpha-defensin peptides require activation for bactericidal activity. In mouse small intestine, matrilysin colocalized with alpha-defensins (cryptdins) in Paneth cell granules, and in vitro it cleaved the pro segment from cryptdin precursors. Matrilysin-deficient (MAT-/-) mice lacked mature cryptdins and accumulated precursor molecules. Intestinal peptide preparations from MAT-/- mice had decreased antimicrobial activity. Orally administered bacteria survived in greater numbers and were more virulent in MAT-/- mice than in MAT+/+ mice. Thus, matrilysin functions in intestinal mucosal defense by regulating the activity of defensins, which may be a common role for this metalloproteinase in its numerous epithelial sites of expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, C L -- Ouellette, A J -- Satchell, D P -- Ayabe, T -- Lopez-Boado, Y S -- Stratman, J L -- Hultgren, S J -- Matrisian, L M -- Parks, W C -- New York, N.Y. -- Science. 1999 Oct 1;286(5437):113-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, Division of Allergy and Pulmonary Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA. wilson_c@kids.wustl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10506557" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Catalysis ; Cytoplasmic Granules/enzymology ; Escherichia coli/growth & development ; Escherichia coli Infections/immunology/microbiology ; Female ; Humans ; *Immunity, Innate ; *Immunity, Mucosal ; Intestinal Mucosa/enzymology/immunology/microbiology ; Intestine, Small/enzymology/*immunology/microbiology ; Male ; Matrix Metalloproteinase 7 ; Metalloendopeptidases/genetics/*metabolism ; Mice ; Molecular Sequence Data ; Paneth Cells/enzymology ; Protein Precursors/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Salmonella typhimurium/growth & development/pathogenicity ; Tissue Extracts/pharmacology
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  • 24
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    The promise of comparative genomics in mammals (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-10-16
    Description: Dense genetic maps of human, mouse, and rat genomes that are based on coding genes and on microsatellite and single-nucleotide polymorphism markers have been complemented by precise gene homolog alignment with moderate-resolution maps of livestock, companion animals, and additional mammal species. Comparative genetic assessment expands the utility of these maps in gene discovery, in functional genomics, and in tracking the evolutionary forces that sculpted the genome organization of modern mammalian species.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Brien, S J -- Menotti-Raymond, M -- Murphy, W J -- Nash, W G -- Wienberg, J -- Stanyon, R -- Copeland, N G -- Jenkins, N A -- Womack, J E -- Marshall Graves, J A -- New York, N.Y. -- Science. 1999 Oct 15;286(5439):458-62, 479-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Genomic Diversity, National Cancer Institute, Frederick, MD 21702-1201, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10521336" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Domestic/genetics ; Base Sequence ; *Chromosome Mapping ; *Evolution, Molecular ; Genetic Markers ; *Genome ; *Genome, Human ; Humans ; Mammals/*genetics ; Mutation ; *Phylogeny ; Rodentia/genetics
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    GTP binding by class II transactivator: role in nuclear import (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-08-28
    Description: Class II transactivator (CIITA) is a global transcriptional coactivator of human leukocyte antigen-D (HLA-D) genes. CIITA contains motifs similar to guanosine triphosphate (GTP)-binding proteins. This report shows that CIITA binds GTP, and mutations in these motifs decrease its GTP-binding and transactivation activity. Substitution of these motifs with analogous sequences from Ras restores CIITA function. CIITA exhibits little GTPase activity, yet mutations in CIITA that confer GTPase activity reduce transcriptional activity. GTP binding by CIITA correlates with nuclear import. Thus, unlike other GTP-binding proteins, CIITA is involved in transcriptional activation that uses GTP binding to facilitate its own nuclear import.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harton, J A -- Cressman, D E -- Chin, K C -- Der, C J -- Ting, J P -- AI29564/AI/NIAID NIH HHS/ -- AI41751/AI/NIAID NIH HHS/ -- AI45580/AI/NIAID NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1999 Aug 27;285(5432):1402-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lineberger Comprehensive Cancer Center, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10464099" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Animals ; Binding Sites ; COS Cells ; Cell Line ; Cell Nucleus/*metabolism ; GTP-Binding Proteins/chemistry/genetics/*metabolism ; *Genes, MHC Class II ; Guanosine Triphosphate/*metabolism ; HLA-DR Antigens/genetics ; Humans ; Mutation ; *Nuclear Proteins ; Promoter Regions, Genetic ; Temperature ; Trans-Activators/chemistry/genetics/*metabolism ; Transcription Factors/metabolism ; *Transcriptional Activation
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  • 26
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    Role of nonexercise activity thermogenesis in resistance to fat gain in humans (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-01-08
    Description: Humans show considerable interindividual variation in susceptibility to weight gain in response to overeating. The physiological basis of this variation was investigated by measuring changes in energy storage and expenditure in 16 nonobese volunteers who were fed 1000 kilocalories per day in excess of weight-maintenance requirements for 8 weeks. Two-thirds of the increases in total daily energy expenditure was due to increased nonexercise activity thermogenesis (NEAT), which is associated with fidgeting, maintenance of posture, and other physical activities of daily life. Changes in NEAT accounted for the 10-fold differences in fat storage that occurred and directly predicted resistance to fat gain with overfeeding (correlation coefficient = 0.77, probability 〈 0.001). These results suggest that as humans overeat, activation of NEAT dissipates excess energy to preserve leanness and that failure to activate NEAT may result in ready fat gain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levine, J A -- Eberhardt, N L -- Jensen, M D -- DK45343/DK/NIDDK NIH HHS/ -- DK50456/DK/NIDDK NIH HHS/ -- M01 RR00535/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1999 Jan 8;283(5399):212-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Endocrine Research Unit, Mayo Clinic and Mayo Foundation, 200 First Street Southwest, Rochester, MN 55905, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9880251" target="_blank"〉PubMed〈/a〉
    Keywords: Activities of Daily Living ; *Adipose Tissue ; Adult ; Basal Metabolism ; Body Composition ; Calorimetry, Indirect ; *Energy Intake ; *Energy Metabolism ; Exercise ; Female ; Humans ; Hyperphagia/*physiopathology ; Male ; *Movement ; Posture ; *Weight Gain
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  • 27
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    Stability, precision, and near-24-hour period of the human circadian pacemaker (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-06-26
    Description: Regulation of circadian period in humans was thought to differ from that of other species, with the period of the activity rhythm reported to range from 13 to 65 hours (median 25.2 hours) and the period of the body temperature rhythm reported to average 25 hours in adulthood, and to shorten with age. However, those observations were based on studies of humans exposed to light levels sufficient to confound circadian period estimation. Precise estimation of the periods of the endogenous circadian rhythms of melatonin, core body temperature, and cortisol in healthy young and older individuals living in carefully controlled lighting conditions has now revealed that the intrinsic period of the human circadian pacemaker averages 24.18 hours in both age groups, with a tight distribution consistent with other species. These findings have important implications for understanding the pathophysiology of disrupted sleep in older people.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Czeisler, C A -- Duffy, J F -- Shanahan, T L -- Brown, E N -- Mitchell, J F -- Rimmer, D W -- Ronda, J M -- Silva, E J -- Allan, J S -- Emens, J S -- Dijk, D J -- Kronauer, R E -- MO1-RR02635/RR/NCRR NIH HHS/ -- P01-AG09975/AG/NIA NIH HHS/ -- R01-GM53559/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Jun 25;284(5423):2177-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Circadian, Neuroendocrine, and Sleep Disorders Section, Division of Endocrinology, Department of Medicine, Harvard Medical School, Brigham and Women's Hospital, 221 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10381883" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Aging/*physiology ; Biological Clocks/genetics/*physiology ; Body Temperature ; Circadian Rhythm/genetics/*physiology ; Darkness ; Female ; Humans ; Hydrocortisone/blood ; Light ; Male ; Melatonin/blood ; Middle Aged ; Sleep
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  • 28
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    Defective angiogenesis in mice lacking endoglin (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-05-29
    Description: Endoglin is a transforming growth factor-beta (TGF-beta) binding protein expressed on the surface of endothelial cells. Loss-of-function mutations in the human endoglin gene ENG cause hereditary hemorrhagic telangiectasia (HHT1), a disease characterized by vascular malformations. Here it is shown that by gestational day 11.5, mice lacking endoglin die from defective vascular development. However, in contrast to mice lacking TGF-beta, vasculogenesis was unaffected. Loss of endoglin caused poor vascular smooth muscle development and arrested endothelial remodeling. These results demonstrate that endoglin is essential for angiogenesis and suggest a pathogenic mechanism for HHT1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, D Y -- Sorensen, L K -- Brooke, B S -- Urness, L D -- Davis, E C -- Taylor, D G -- Boak, B B -- Wendel, D P -- K08 HL03490-03/HL/NHLBI NIH HHS/ -- T35 HL07744-06/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1999 May 28;284(5419):1534-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Human Molecular Biology and Genetics, Department of Human Genetics, Howard Hughes Medical Institute, University of Utah, Salt Lake City, UT 84112-5330, USA. dean.li@hci.utah.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10348742" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD ; Antigens, CD31/analysis ; Blood Vessels/cytology/*embryology/metabolism ; Cell Differentiation ; Crosses, Genetic ; Endothelium, Vascular/cytology/*embryology/metabolism ; Female ; Gene Targeting ; In Situ Hybridization ; Male ; Mice ; Mice, Inbred C57BL ; Microscopy, Electron ; Muscle, Smooth, Vascular/cytology/*embryology ; *Neovascularization, Physiologic ; Receptors, Cell Surface ; Signal Transduction ; Transforming Growth Factor beta/metabolism ; Vascular Cell Adhesion Molecule-1/genetics/*physiology ; Yolk Sac/ultrastructure
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  • 29
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    Paracellular channels! (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-07-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wong, V -- Goodenough, D A -- New York, N.Y. -- Science. 1999 Jul 2;285(5424):62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10428705" target="_blank"〉PubMed〈/a〉
    Keywords: Calcium Channels/metabolism ; Cell Membrane/metabolism/ultrastructure ; Claudins ; Cloning, Molecular ; Humans ; Ion Channels ; Ion Transport ; Kidney Diseases/genetics/*metabolism ; Kidney Tubules/*metabolism/ultrastructure ; Lipid Bilayers/metabolism ; Magnesium/blood/*metabolism ; Magnesium Deficiency/genetics/*metabolism ; Membrane Proteins/genetics/*physiology ; Mutation ; Tight Junctions/*metabolism
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  • 30
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    Regulation of maternal behavior and offspring growth by paternally expressed Peg3 (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-04-09
    Description: Imprinted genes display parent-of-origin-dependent monoallelic expression that apparently regulates complex mammalian traits, including growth and behavior. The Peg3 gene is expressed in embryos and the adult brain from the paternal allele only. A mutation in the Peg3 gene resulted in growth retardation, as well as a striking impairment of maternal behavior that frequently resulted in death of the offspring. This result may be partly due to defective neuronal connectivity, as well as reduced oxytocin neurons in the hypothalamus, because mutant mothers were deficient in milk ejection. This study provides further insights on the evolution of epigenetic regulation of imprinted gene dosage in modulating mammalian growth and behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, L -- Keverne, E B -- Aparicio, S A -- Ishino, F -- Barton, S C -- Surani, M A -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1999 Apr 9;284(5412):330-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome CRC Institute of Cancer and Developmental Biology, and Physiological Laboratory, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10195900" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Brain/metabolism ; Crosses, Genetic ; Female ; Gene Expression ; Gene Targeting ; *Genomic Imprinting ; *Growth ; Hypothalamus/cytology/metabolism ; Kruppel-Like Transcription Factors ; Lactation ; Male ; *Maternal Behavior ; Mice ; Mutation ; Neural Pathways ; Neurons/metabolism ; Oxytocin/metabolism ; Phenotype ; *Protein Kinases ; Proteins/genetics/*physiology ; *Transcription Factors ; *Weight Gain
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    A role for DNA-PK in retroviral DNA integration (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-24
    Description: Retroviral DNA integration is catalyzed by the viral protein integrase. Here, it is shown that DNA-dependent protein kinase (DNA-PK), a host cell protein, also participates in the reaction. DNA-PK-deficient murine scid cells infected with three different retroviruses showed a substantial reduction in retroviral DNA integration and died by apoptosis. Scid cell killing was not observed after infection with an integrase-defective virus, suggesting that abortive integration is the trigger for death in these DNA repair-deficient cells. These results suggest that the initial events in retroviral integration are detected as DNA damage by the host cell and that completion of the integration process requires the DNA-PK-mediated repair pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Daniel, R -- Katz, R A -- Skalka, A M -- AI40721/AI/NIAID NIH HHS/ -- AI40835/AI/NIAID NIH HHS/ -- CA71515/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):644-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Cancer Research, Fox Chase Cancer Center, 7701 Burholme Avenue, Philadelphia, PA 19111, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10213687" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; CHO Cells ; Cell Survival ; Cells, Cultured ; Cricetinae ; DNA Damage ; *DNA Repair ; DNA, Viral/*genetics/metabolism ; DNA-Activated Protein Kinase ; *DNA-Binding Proteins ; Genetic Vectors ; HIV-1/genetics ; Integrases/genetics/metabolism ; Mice ; Mutation ; Protein-Serine-Threonine Kinases/*metabolism ; Retroviridae/*genetics/physiology ; *Virus Integration ; Virus Replication
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    Self-organization of microtubule asters induced in Xenopus egg extracts by GTP-bound Ran (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-05-21
    Description: The nucleotide exchange activity of RCC1, the only known nucleotide exchange factor for Ran, a Ras-like small guanosine triphosphatase, was required for microtubule aster formation with or without demembranated sperm in Xenopus egg extracts arrested in meiosis II. Consistently, in the RCC1-depleted egg extracts, Ran guanosine triphosphate (RanGTP), but not Ran guanosine diphosphate (RanGDP), induced self-organization of microtubule asters, and the process required the activity of dynein. Thus, Ran was shown to regulate formation of the microtubule network.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ohba, T -- Nakamura, M -- Nishitani, H -- Nishimoto, T -- New York, N.Y. -- Science. 1999 May 21;284(5418):1356-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Graduate School of Medical Science, Kyushu University, Maidashi Higashi-ku, Fukuoka 812-8582, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10334990" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Cycle Proteins ; Cell Extracts ; Cell Nucleus/metabolism ; DNA-Binding Proteins/metabolism ; Dyneins/metabolism ; Female ; GTP Phosphohydrolases/*metabolism ; *Guanine Nucleotide Exchange Factors ; Guanosine Diphosphate/metabolism ; Guanosine Triphosphate/*metabolism ; Male ; Microtubules/chemistry/*metabolism/ultrastructure ; Nuclear Proteins/analysis/*metabolism ; Ovum ; Recombinant Proteins/metabolism ; Sperm Head/physiology ; Spindle Apparatus/chemistry/*metabolism/ultrastructure ; Xenopus ; *Xenopus Proteins ; ran GTP-Binding Protein
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    Intracytoplasmic sperm injection (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-10-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hawkins, M M -- Barratt, C L -- New York, N.Y. -- Science. 1999 Oct 1;286(5437):51-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10532889" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; Congenital Abnormalities/etiology ; Developmental Disabilities/etiology ; Female ; Fertilization in Vitro/*adverse effects ; Great Britain ; Humans ; Male ; Neoplasms/etiology ; Pregnancy ; Pregnancy Outcome ; Registries ; Risk Factors
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    An activating immunoreceptor complex formed by NKG2D and DAP10 (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-07-31
    Description: Many immune receptors are composed of separate ligand-binding and signal-transducing subunits. In natural killer (NK) and T cells, DAP10 was identified as a cell surface adaptor protein in an activating receptor complex with NKG2D, a receptor for the stress-inducible and tumor-associated major histocompatibility complex molecule MICA. Within the DAP10 cytoplasmic domain, an Src homology 2 (SH2) domain-binding site was capable of recruiting the p85 subunit of the phosphatidylinositol 3-kinase (PI 3-kinase), providing for NKG2D-dependent signal transduction. Thus, NKG2D-DAP10 receptor complexes may activate NK and T cell responses against MICA-bearing tumors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, J -- Song, Y -- Bakker, A B -- Bauer, S -- Spies, T -- Lanier, L L -- Phillips, J H -- AI30581/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1999 Jul 30;285(5428):730-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉DNAX Research Institute, 901 California Avenue, Palo Alto, CA 94304, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10426994" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding Sites ; Cell Line ; Cytotoxicity, Immunologic ; Humans ; Killer Cells, Natural/*immunology/metabolism ; Ligands ; *Lymphocyte Activation ; Membrane Proteins/chemistry/genetics/*metabolism ; Mice ; Molecular Sequence Data ; NK Cell Lectin-Like Receptor Subfamily K ; Neoplasms/immunology ; Phosphatidylinositol 3-Kinases/metabolism ; Phosphorylation ; Phosphotyrosine/metabolism ; Receptors, Immunologic/chemistry/genetics/*metabolism ; Receptors, Natural Killer Cell ; Signal Transduction ; T-Lymphocytes/*immunology/metabolism ; Tumor Cells, Cultured ; src Homology Domains
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    Behaviorists listen in as animals call and croak (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bagla, P -- New York, N.Y. -- Science. 1999 Sep 3;285(5433):1480-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10498530" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Communication ; Animals ; Anura/*physiology ; Female ; Grasshoppers/*physiology ; Male
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    Severe liver degeneration in mice lacking the IkappaB kinase 2 gene (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-09
    Description: Phosphorylation of inhibitor of kappa B (IkappaB) proteins is an important step in the activation of the transcription nuclear factor kappa B (NF-kappaB) and requires two IkappaB kinases, IKK1 (IKKalpha) and IKK2 (IKKbeta). Mice that are devoid of the IKK2 gene had extensive liver damage from apoptosis and died as embryos, but these mice could be rescued by the inactivation of the gene encoding tumor necrosis factor receptor 1. Mouse embryonic fibroblast cells that were isolated from IKK2-/- embryos showed a marked reduction in tumor necrosis factor-alpha (TNF-alpha)- and interleukin-1alpha-induced NF-kappaB activity and an enhanced apoptosis in response to TNF-alpha. IKK1 associated with NF-kappaB essential modulator (IKKgamma/IKKAP1), another component of the IKK complex. These results show that IKK2 is essential for mouse development and cannot be substituted with IKK1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Q -- Van Antwerp, D -- Mercurio, F -- Lee, K F -- Verma, I M -- New York, N.Y. -- Science. 1999 Apr 9;284(5412):321-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Salk Institute, La Jolla, CA 92037, USA. Signal Pharmaceuticals, San Diego, CA 92121, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10195897" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Cell Line ; DNA-Binding Proteins/metabolism ; Embryonic and Fetal Development ; Gene Targeting ; I-kappa B Kinase ; I-kappa B Proteins ; Interleukin-1/pharmacology ; Liver/cytology/*embryology ; Mice ; NF-kappa B/metabolism ; Phosphorylation ; Polymerase Chain Reaction ; Protein-Serine-Threonine Kinases/genetics/*metabolism ; Receptors, Tumor Necrosis Factor/genetics/metabolism ; Recombinant Fusion Proteins/metabolism ; Sequence Deletion ; Signal Transduction ; Transcription Factor RelA ; Transcription Factors/metabolism ; Tumor Necrosis Factor-alpha/pharmacology
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    Breast implant safety (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, D L -- Garry, R F -- New York, N.Y. -- Science. 1999 Mar 12;283(5408):1644.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10189316" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Breast Implants/*adverse effects ; Female ; Humans ; Silicone Gels/*adverse effects
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    Cell surgery (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-12-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sikorski, R -- Peters, R -- New York, N.Y. -- Science. 1999 Nov 19;286(5444):1498.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10610553" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Marrow Cells/*cytology ; Cell Differentiation ; Cell Separation ; Dystrophin/biosynthesis ; Female ; *Hematopoietic Stem Cell Transplantation ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Inbred mdx ; Muscle, Skeletal/*cytology/metabolism ; *Stem Cell Transplantation ; Stem Cells/*cytology
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    Inhibition of the mitogen-activated protein kinase kinase superfamily by a Yersinia effector (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-18
    Description: The bacterial pathogen Yersinia uses a type III secretion system to inject several virulence factors into target cells. One of the Yersinia virulence factors, YopJ, was shown to bind directly to the superfamily of MAPK (mitogen-activated protein kinase) kinases (MKKs) blocking both phosphorylation and subsequent activation of the MKKs. These results explain the diverse activities of YopJ in inhibiting the extracellular signal-regulated kinase, c-Jun amino-terminal kinase, p38, and nuclear factor kappa B signaling pathways, preventing cytokine synthesis and promoting apoptosis. YopJ-related proteins that are found in a number of bacterial pathogens of animals and plants may function to block MKKs so that host signaling responses can be modulated upon infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Orth, K -- Palmer, L E -- Bao, Z Q -- Stewart, S -- Rudolph, A E -- Bliska, J B -- Dixon, J E -- 18024/PHS HHS/ -- AI35175/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1999 Sep 17;285(5435):1920-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry, University of Michigan, Ann Arbor, MI 48109-0606, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10489373" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/*physiology ; Calcium-Calmodulin-Dependent Protein Kinases/*antagonists & inhibitors ; Cell Line ; Enzyme Activation ; Enzyme Inhibitors/*pharmacology ; HeLa Cells ; Humans ; *MAP Kinase Kinase Kinase 1 ; NF-kappa B/metabolism ; Phosphorylation ; Protein Binding ; Protein-Serine-Threonine Kinases/genetics/metabolism ; Recombinant Fusion Proteins/genetics/metabolism ; Transfection ; Virulence ; Yersinia pseudotuberculosis/genetics/metabolism/pathogenicity/*physiology
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    Dosage compensation proteins targeted to X chromosomes by a determinant of hermaphrodite fate (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-06-12
    Description: In many organisms, master control genes coordinately regulate sex-specific aspects of development. SDC-2 was shown to induce hermaphrodite sexual differentiation and activate X chromosome dosage compensation in Caenorhabditis elegans. To control these distinct processes, SDC-2 acts as a strong gene-specific repressor and a weaker chromosome-wide repressor. To initiate hermaphrodite development, SDC-2 associates with the promoter of the male sex-determining gene her-1 to repress its transcription. To activate dosage compensation, SDC-2 triggers assembly of a specialized protein complex exclusively on hermaphrodite X chromosomes to reduce gene expression by half. SDC-2 can localize to X chromosomes without other components of the dosage compensation complex, suggesting that SDC-2 targets dosage compensation machinery to X chromosomes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dawes, H E -- Berlin, D S -- Lapidus, D M -- Nusbaum, C -- Davis, T L -- Meyer, B J -- GM30702/GM/NIGMS NIH HHS/ -- T32 GM07127/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Jun 11;284(5421):1800-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720-3204, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10364546" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/embryology/*genetics/physiology ; *Caenorhabditis elegans Proteins ; *DNA-Binding Proteins ; Disorders of Sex Development ; *Dosage Compensation, Genetic ; Female ; Gene Expression Regulation, Developmental ; Genes, Helminth ; Helminth Proteins/genetics/*physiology ; Male ; Molecular Sequence Data ; Mutation ; Promoter Regions, Genetic ; Repressor Proteins/genetics/*physiology ; *Sex Determination Processes ; Transgenes ; X Chromosome/genetics/*metabolism
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    Human cloning. Korean report sparks anger and inquiry (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-01-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baker, M -- New York, N.Y. -- Science. 1999 Jan 1;283(5398):16-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9917255" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Bioethics ; *Cloning, Organism ; Embryo Research ; Female ; Government Regulation ; Humans ; Korea ; Nuclear Transfer Techniques ; Research
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    The Pex16p homolog SSE1 and storage organelle formation in Arabidopsis seeds (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-04-09
    Description: Mature Arabidopsis seeds are enriched in storage proteins and lipids, but lack starch. In the shrunken seed 1 (sse1) mutant, however, starch is favored over proteins and lipids as the major storage compound. SSE1 has 26 percent identity with Pex16p in Yarrowia lipolytica and complements pex16 mutants defective in the formation of peroxisomes and the transportation of plasma membrane- and cell wall-associated proteins. In Arabidopsis maturing seeds, SSE1 is required for protein and oil body biogenesis, both of which are endoplasmic reticulum-dependent. Starch accumulation in sse1 suggests that starch formation is a default storage deposition pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lin, Y -- Sun, L -- Nguyen, L V -- Rachubinski, R A -- Goodman, H M -- New York, N.Y. -- Science. 1999 Apr 9;284(5412):328-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10195899" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Arabidopsis/genetics/*metabolism/ultrastructure ; *Arabidopsis Proteins ; *Fungal Proteins ; Gene Expression ; Genetic Complementation Test ; Membrane Proteins/chemistry/genetics ; Microbodies/metabolism/ultrastructure ; Microscopy, Electron ; Molecular Sequence Data ; Mutation ; Organelles/*metabolism/ultrastructure ; Phenotype ; Plant Oils/metabolism ; Plant Proteins/chemistry/genetics/metabolism/*physiology ; Reverse Transcriptase Polymerase Chain Reaction ; Saccharomycetales/chemistry/genetics/metabolism ; Seeds/*metabolism/ultrastructure ; Starch/metabolism
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    A piston model for transmembrane signaling of the aspartate receptor (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-11
    Description: To characterize the mechanism by which receptors propagate conformational changes across membranes, nitroxide spin labels were attached at strategic positions in the bacterial aspartate receptor. By collecting the electron paramagnetic resonance spectra of these labeled receptors in the presence and absence of the ligand aspartate, ligand binding was shown to generate an approximately 1 angstrom intrasubunit piston-type movement of one transmembrane helix downward relative to the other transmembrane helix. The receptor-associated phosphorylation cascade proteins CheA and CheW did not alter the ligand-induced movement. Because the piston movement is very small, the ability of receptors to produce large outcomes in response to stimuli is caused by the ability of the receptor-coupled enzymes to detect small changes in the conformation of the receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ottemann, K M -- Xiao, W -- Shin, Y K -- Koshland, D E Jr -- DK09765/DK/NIDDK NIH HHS/ -- GM51290/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Sep 10;285(5434):1751-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology and Department of Chemistry, University of California, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10481014" target="_blank"〉PubMed〈/a〉
    Keywords: Aspartic Acid/*metabolism ; Bacterial Proteins/metabolism ; Cell Membrane/*metabolism ; Chemotaxis ; Dimerization ; Electron Spin Resonance Spectroscopy ; Escherichia coli/metabolism ; *Escherichia coli Proteins ; Fourier Analysis ; Ligands ; Lipid Bilayers ; Membrane Proteins/metabolism ; Methylation ; *Models, Biological ; Mutagenesis ; Phosphorylation ; Protein Conformation ; Protein Kinases/metabolism ; Protein Structure, Secondary ; Receptors, Amino Acid/*chemistry/genetics/*metabolism ; *Signal Transduction ; Spin Labels
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    Genomic views of human history (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-10-16
    Description: New tools of genomic analysis shed light on historical puzzles. Migrations of ancient peoples, differences in migration patterns of males and females, historical demography of cultures with ancient roots, and patterns of human genetic diversity are increasingly the focus of integrated analysis by historians, anthropologists, and geneticists.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Owens, K -- King, M C -- New York, N.Y. -- Science. 1999 Oct 15;286(5439):451-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Genetics and Medicine, Box 357720, University of Washington, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10521333" target="_blank"〉PubMed〈/a〉
    Keywords: *Anthropology ; Biological Evolution ; Continental Population Groups/genetics ; Culture ; Emigration and Immigration ; Ethnic Groups/genetics ; Female ; Genetic Variation ; *Genetics, Population ; *Genome, Human ; History, Ancient ; Humans ; Jews/genetics ; Male
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    An essential role for DNA adenine methylation in bacterial virulence (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-05-13
    Description: Salmonella typhimurium lacking DNA adenine methylase (Dam) were fully proficient in colonization of mucosal sites but showed severe defects in colonization of deeper tissue sites. These Dam- mutants were totally avirulent and were effective as live vaccines against murine typhoid fever. Dam regulated the expression of at least 20 genes known to be induced during infection; a subset of these genes are among those activated by the PhoP global virulence regulator. PhoP, in turn, affected Dam methylation at specific genomic sites, as evidenced by alterations in DNA methylation patterns. Dam inhibitors are likely to have broad antimicrobial action, and Dam- derivatives of these pathogens may serve as live attenuated vaccines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heithoff, D M -- Sinsheimer, R L -- Low, D A -- Mahan, M J -- AI23348/AI/NIAID NIH HHS/ -- AI36373/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1999 May 7;284(5416):967-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA 93106, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10320378" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine/metabolism ; Animals ; Bacterial Proteins/metabolism ; *Bacterial Vaccines ; *DNA Methylation ; DNA, Bacterial/metabolism ; Gene Expression Regulation, Bacterial ; Genes, Bacterial ; Lethal Dose 50 ; Methylation ; Mice ; Mice, Inbred BALB C ; Mutation ; Peyer's Patches/microbiology ; Salmonella Infections, Animal/immunology/*microbiology/prevention & control ; Salmonella typhimurium/*enzymology/genetics/immunology/*pathogenicity ; Site-Specific DNA-Methyltransferase (Adenine-Specific)/antagonists & ; inhibitors/genetics/*metabolism ; Vaccines, Attenuated ; Virulence/genetics
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    Beating the odds with Big K (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-10-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Silberberg, S D -- Magleby, K L -- New York, N.Y. -- Science. 1999 Sep 17;285(5435):1859-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel. silber@bgumail.bgu.ac.il〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10515790" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Pressure/drug effects/*physiology ; Estradiol/*metabolism/pharmacology ; Female ; Humans ; Large-Conductance Calcium-Activated Potassium Channels ; Longevity/physiology ; Male ; Muscle Contraction ; Muscle, Smooth, Vascular/drug effects/metabolism ; Potassium Channels/*metabolism ; *Potassium Channels, Calcium-Activated ; Recombinant Proteins/metabolism ; Sex Characteristics ; Xenopus
    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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    Evolution of shape complementarity and catalytic efficiency from a primordial antibody template (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-12-22
    Description: The crystal structure of an efficient Diels-Alder antibody catalyst at 1.9 angstrom resolution reveals almost perfect shape complementarity with its transition state analog. Comparison with highly related progesterone and Diels-Alderase antibodies that arose from the same primordial germ line template shows the relatively subtle mutational steps that were able to evolve both structural complementarity and catalytic efficiency.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xu, J -- Deng, Q -- Chen, J -- Houk, K N -- Bartek, J -- Hilvert, D -- Wilson, I A -- CA27489/CA/NCI NIH HHS/ -- GM38273/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Dec 17;286(5448):2345-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10600746" target="_blank"〉PubMed〈/a〉
    Keywords: Antibodies, Catalytic/*chemistry/genetics/*metabolism ; Binding Sites, Antibody ; Catalysis ; Chemistry, Physical ; Crystallography, X-Ray ; *Evolution, Molecular ; Haptens/chemistry/metabolism ; Hydrogen Bonding ; Immunoglobulin Fab Fragments/chemistry/metabolism ; Ligands ; Models, Molecular ; Mutation ; Physicochemical Phenomena ; Progesterone/immunology ; Protein Conformation ; Solubility ; Temperature ; Templates, Genetic
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    The machinery of mitochondrial inheritance and behavior (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-03-05
    Description: The distribution of mitochondria to daughter cells during cell division is an essential feature of cell proliferation. Until recently, it was commonly believed that inheritance of mitochondria and other organelles was a passive process, a consequence of their random diffusion throughout the cytoplasm. A growing recognition of the reticular morphology of mitochondria in many living cells, the association of mitochondria with the cytoskeleton, and the coordinated movements of mitochondria during cellular division and differentiation has illuminated the necessity for a cellular machinery that mediates mitochondrial behavior. Characterization of the underlying molecular components of this machinery is providing insight into mechanisms regulating mitochondrial morphology and distribution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yaffe, M P -- GM44614/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Mar 5;283(5407):1493-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of California, San Diego, La Jolla, CA 92093-0347, USA. myaffe@ucsd.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10066164" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Division ; Cytoskeletal Proteins/genetics/physiology ; Cytoskeleton/physiology ; Dynamins ; GTP Phosphohydrolases/physiology ; Genes ; Humans ; Mitochondria/*genetics/*physiology/ultrastructure ; Movement ; Mutation ; Saccharomyces cerevisiae/genetics/physiology/ultrastructure
    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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  • 49
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    Defective thymocyte maturation in p44 MAP kinase (Erk 1) knockout mice (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-11-13
    Description: The p42 and p44 mitogen-activated protein kinases (MAPKs), also called Erk2 and Erk1, respectively, have been implicated in proliferation as well as in differentiation programs. The specific role of the p44 MAPK isoform in the whole animal was evaluated by generation of p44 MAPK-deficient mice by homologous recombination in embryonic stem cells. The p44 MAPK-/- mice were viable, fertile, and of normal size. Thus, p44 MAPK is apparently dispensable and p42 MAPK (Erk2) may compensate for its loss. However, in p44 MAPK-/- mice, thymocyte maturation beyond the CD4+CD8+ stage was reduced by half, with a similar diminution in the thymocyte subpopulation expressing high levels of T cell receptor (CD3high). In p44 MAPK-/- thymocytes, proliferation in response to activation with a monoclonal antibody to the T cell receptor in the presence of phorbol myristate acetate was severely reduced even though activation of p42 MAPK was more sustained in these cells. The p44 MAPK apparently has a specific role in thymocyte development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pages, G -- Guerin, S -- Grall, D -- Bonino, F -- Smith, A -- Anjuere, F -- Auberger, P -- Pouyssegur, J -- New York, N.Y. -- Science. 1999 Nov 12;286(5443):1374-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Signaling, Developmental Biology and Cancer Research, CNRS UMR 6543, Centre A. Lacassagne, 33 Avenue de Valombrose, 06189 Nice, France. gpages@unice.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10558995" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Antigens, CD/analysis ; Antigens, CD3/immunology ; Cell Differentiation ; Cell Division ; Cells, Cultured ; DNA/biosynthesis ; Enzyme Activation ; Gene Targeting ; Isoenzymes/genetics/metabolism ; Mice ; Mice, Knockout ; Mitogen-Activated Protein Kinase 1/metabolism ; Mitogen-Activated Protein Kinase 3 ; Mitogen-Activated Protein Kinases/deficiency/genetics/*metabolism ; Phosphorylation ; Polymorphism, Restriction Fragment Length ; Receptors, Antigen, T-Cell, alpha-beta/analysis/physiology ; T-Lymphocyte Subsets/*cytology/enzymology/immunology ; Tetradecanoylphorbol Acetate/pharmacology ; Thymus Gland/*cytology
    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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    A long season puts Catalhoyuk in context (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-11-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balter, M -- New York, N.Y. -- Science. 1999 Oct 29;286(5441):890-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10577237" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Child ; Female ; *Fossils ; History, Ancient ; Humans ; Male ; Paleopathology ; Skull/*pathology ; Turkey
    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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    Convergence of transforming growth factor-beta and vitamin D signaling pathways on SMAD transcriptional coactivators (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-02-26
    Description: Cell proliferation and differentiation are regulated by growth regulatory factors such as transforming growth factor-beta (TGF-beta) and the liphophilic hormone vitamin D. TGF-beta causes activation of SMAD proteins acting as coactivators or transcription factors in the nucleus. Vitamin D controls transcription of target genes through the vitamin D receptor (VDR). Smad3, one of the SMAD proteins downstream in the TGF-beta signaling pathway, was found in mammalian cells to act as a coactivator specific for ligand-induced transactivation of VDR by forming a complex with a member of the steroid receptor coactivator-1 protein family in the nucleus. Thus, Smad3 may mediate cross-talk between vitamin D and TGF-beta signaling pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yanagisawa, J -- Yanagi, Y -- Masuhiro, Y -- Suzawa, M -- Watanabe, M -- Kashiwagi, K -- Toriyabe, T -- Kawabata, M -- Miyazono, K -- Kato, S -- New York, N.Y. -- Science. 1999 Feb 26;283(5406):1317-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Molecular and Cellular Biosciences, University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10037600" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Morphogenetic Protein Receptors ; Bone Morphogenetic Proteins/pharmacology ; COS Cells ; Calcitriol/*metabolism/pharmacology ; Cell Nucleus/metabolism ; DNA-Binding Proteins/*metabolism ; Histone Acetyltransferases ; Ligands ; Nuclear Receptor Coactivator 1 ; Phosphorylation ; Receptor Cross-Talk ; Receptors, Calcitriol/*metabolism ; Receptors, Cell Surface/metabolism ; *Receptors, Growth Factor ; Receptors, Retinoic Acid/metabolism ; Receptors, Transforming Growth Factor beta/metabolism ; Recombinant Fusion Proteins/metabolism ; Retinoid X Receptors ; Signal Transduction ; Smad3 Protein ; Trans-Activators/*metabolism ; Transcription Factors/metabolism ; *Transcriptional Activation ; Transfection ; Transforming Growth Factor beta/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Paracellin-1, a renal tight junction protein required for paracellular Mg2+ resorption (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-07-03
    Description: Epithelia permit selective and regulated flux from apical to basolateral surfaces by transcellular passage through cells or paracellular flux between cells. Tight junctions constitute the barrier to paracellular conductance; however, little is known about the specific molecules that mediate paracellular permeabilities. Renal magnesium ion (Mg2+) resorption occurs predominantly through a paracellular conductance in the thick ascending limb of Henle (TAL). Here, positional cloning has identified a human gene, paracellin-1 (PCLN-1), mutations in which cause renal Mg2+ wasting. PCLN-1 is located in tight junctions of the TAL and is related to the claudin family of tight junction proteins. These findings provide insight into Mg2+ homeostasis, demonstrate the role of a tight junction protein in human disease, and identify an essential component of a selective paracellular conductance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Simon, D B -- Lu, Y -- Choate, K A -- Velazquez, H -- Al-Sabban, E -- Praga, M -- Casari, G -- Bettinelli, A -- Colussi, G -- Rodriguez-Soriano, J -- McCredie, D -- Milford, D -- Sanjad, S -- Lifton, R P -- F.1/Telethon/Italy -- R01DK51696/DK/NIDDK NIH HHS/ -- TGM06S01/Telethon/Italy -- New York, N.Y. -- Science. 1999 Jul 2;285(5424):103-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10390358" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Calcium/urine ; Chromosomes, Human, Pair 3/genetics ; Claudins ; Cloning, Molecular ; Female ; Genes, Recessive ; Homeostasis ; Humans ; Kidney Diseases/*genetics/metabolism ; Kidney Tubules/chemistry ; Loop of Henle/chemistry/*metabolism ; Magnesium/blood/*metabolism ; Magnesium Deficiency/*genetics/metabolism ; Male ; Membrane Proteins/analysis/chemistry/genetics/*physiology ; Molecular Sequence Data ; Mutation ; Pedigree ; Physical Chromosome Mapping ; Tight Junctions/*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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    What maintains memories? (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-01-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lisman, J E -- Fallon, J R -- P01 NS039321/NS/NINDS NIH HHS/ -- R01 HD023924/HD/NICHD NIH HHS/ -- R01 HD052083/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1999 Jan 15;283(5400):339-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Brandeis University, Waltham, MA 02254, USA. lisman@binah.cc.brandeis.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9925495" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*physiology ; Calcium/metabolism ; Calcium-Calmodulin-Dependent Protein Kinase Type 2 ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Computer Simulation ; Enzyme Activation ; Feedback ; Gene Expression ; Long-Term Potentiation ; Memory/*physiology ; Models, Neurological ; Phosphorylation ; Protein Biosynthesis ; Protein Kinase C/metabolism ; RNA, Messenger/metabolism ; Second Messenger Systems ; Synapses/*physiology
    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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    Prions: a lone killer or a vital accomplice? (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-11-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balter, M -- New York, N.Y. -- Science. 1999 Oct 22;286(5440):660-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10577216" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/chemistry/physiology ; Dendritic Cells, Follicular/chemistry/physiology ; Gene Targeting ; Genetic Predisposition to Disease ; Humans ; Mice ; Mice, Transgenic ; Mutation ; Neurons/chemistry ; Prion Diseases/*etiology/genetics/therapy ; Prions/genetics/metabolism/*pathogenicity
    Print ISSN: 0036-8075
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    Regulated delivery of therapeutic proteins after in vivo somatic cell gene transfer (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999
    Description: Stable delivery of a therapeutic protein under pharmacologic control was achieved through in vivo somatic gene transfer. This system was based on the expression of two chimeric, human-derived proteins that were reconstituted by rapamycin into a transcription factor complex. A mixture of two adeno-associated virus vectors, one expressing the transcription factor chimeras and one containing erythropoietin (Epo) under the control of a promoter responsive to the transcription factor, was injected into skeletal muscle of immune-competent mice. Administration of rapamycin resulted in 200-fold induction of plasma Epo. Stable engraftment of this humanized system in immune-competent mice was achieved for 6 months with similar results for at least 3 months in a rhesus monkey.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ye, X -- Rivera, V M -- Zoltick, P -- Cerasoli, F Jr -- Schnell, M A -- Gao, G -- Hughes, J V -- Gilman, M -- Wilson, J M -- P01 AR/NS43648-03/AR/NIAMS NIH HHS/ -- P30 DK47757-05/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1999 Jan 1;283(5398):88-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Human Gene Therapy, University of Pennsylvania, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9872748" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cytomegalovirus/genetics ; Dependovirus/genetics ; Erythropoietin/administration & dosage/blood/*genetics ; Female ; Gene Expression Regulation ; *Gene Transfer Techniques ; Genetic Therapy/*methods ; Genetic Vectors ; Hematocrit ; Injections, Intramuscular ; Macaca mulatta ; Male ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; Muscle, Skeletal ; Promoter Regions, Genetic ; Recombinant Fusion Proteins ; Recombinant Proteins ; Sirolimus/*pharmacology ; Transcription Factors/*genetics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    HIV. French-led therapy fund kicks off in Africa (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-06-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balter, M -- New York, N.Y. -- Science. 1999 May 14;284(5417):1101.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10366339" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-HIV Agents/*therapeutic use ; Cote d'Ivoire ; Female ; *Financial Support ; France ; Fund Raising ; HIV Infections/*drug therapy/*prevention & control/transmission ; Humans ; Infectious Disease Transmission, Vertical/prevention & control ; *International Agencies/economics ; Pilot Projects ; Pregnancy ; Pregnancy Complications, Infectious/drug therapy
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  • 57
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    Positive and negative regulation of IkappaB kinase activity through IKKbeta subunit phosphorylation (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-09
    Description: IkappaB [inhibitor of nuclear factor kappaB (NF-kappaB)] kinase (IKK) phosphorylates IkappaB inhibitory proteins, causing their degradation and activation of transcription factor NF-kappaB, a master activator of inflammatory responses. IKK is composed of three subunits-IKKalpha and IKKbeta, which are highly similar protein kinases, and IKKgamma, a regulatory subunit. In mammalian cells, phosphorylation of two sites at the activation loop of IKKbeta was essential for activation of IKK by tumor necrosis factor and interleukin-1. Elimination of equivalent sites in IKKalpha, however, did not interfere with IKK activation. Thus, IKKbeta, not IKKalpha, is the target for proinflammatory stimuli. Once activated, IKKbeta autophosphorylated at a carboxyl-terminal serine cluster. Such phosphorylation decreased IKK activity and may prevent prolonged activation of the inflammatory response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Delhase, M -- Hayakawa, M -- Chen, Y -- Karin, M -- R01 AI43477/AI/NIAID NIH HHS/ -- R37 ES04151/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1999 Apr 9;284(5412):309-13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0636, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10195894" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Substitution ; Cell Line ; DNA-Binding Proteins/metabolism ; Enzyme Activation ; HeLa Cells ; Helix-Loop-Helix Motifs ; Humans ; I-kappa B Kinase ; I-kappa B Proteins ; Interleukin-1/pharmacology ; Leucine Zippers ; *MAP Kinase Kinase Kinase 1 ; Molecular Sequence Data ; Mutation ; Phosphorylation ; Phosphoserine/metabolism ; Protein-Serine-Threonine Kinases/chemistry/genetics/*metabolism ; Transfection ; Tumor Necrosis Factor-alpha/pharmacology
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    Search for cross-species transmission of porcine endogenous retrovirus in patients treated with living pig tissue. The XEN 111 Study Group (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-08-24
    Description: Pig organs may offer a solution to the shortage of human donor organs for transplantation, but concerns remain about possible cross-species transmission of porcine endogenous retrovirus (PERV). Samples were collected from 160 patients who had been treated with various living pig tissues up to 12 years earlier. Reverse transcription-polymerase chain reaction (RT-PCR) and protein immunoblot analyses were performed on serum from all 160 patients. No viremia was detected in any patient. Peripheral blood mononuclear cells from 159 of the patients were analyzed by PCR using PERV-specific primers. No PERV infection was detected in any of the patients from whom sufficient DNA was extracted to allow complete PCR analysis (97 percent of the patients). Persistent microchimerism (presence of donor cells in the recipient) was observed in 23 patients for up to 8.5 years.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paradis, K -- Langford, G -- Long, Z -- Heneine, W -- Sandstrom, P -- Switzer, W M -- Chapman, L E -- Lockey, C -- Onions, D -- Otto, E -- New York, N.Y. -- Science. 1999 Aug 20;285(5431):1236-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Imutran Ltd. (a Novartis Pharma AG company), Post Office Box 399, Cambridge CB2 2YP, UK. khazal.paradis@pharma.novartis.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10455044" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Aged ; Animals ; Antibodies, Viral/blood ; Child ; Child, Preschool ; Chimera ; DNA, Viral/analysis ; Extracorporeal Circulation ; Female ; *Gammaretrovirus/genetics/immunology/isolation & purification ; Humans ; Immunoblotting ; Islets of Langerhans Transplantation ; Male ; Middle Aged ; RNA, Viral/analysis ; Retrospective Studies ; Retroviridae Infections/diagnosis/*transmission ; Reverse Transcriptase Polymerase Chain Reaction ; Skin Transplantation ; Swine ; *Transplantation, Heterologous/adverse effects ; Tumor Virus Infections/diagnosis/*transmission ; Viremia/diagnosis ; *Zoonoses
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    Sources of mathematical thinking: behavioral and brain-imaging evidence (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-05-13
    Description: Does the human capacity for mathematical intuition depend on linguistic competence or on visuo-spatial representations? A series of behavioral and brain-imaging experiments provides evidence for both sources. Exact arithmetic is acquired in a language-specific format, transfers poorly to a different language or to novel facts, and recruits networks involved in word-association processes. In contrast, approximate arithmetic shows language independence, relies on a sense of numerical magnitudes, and recruits bilateral areas of the parietal lobes involved in visuo-spatial processing. Mathematical intuition may emerge from the interplay of these brain systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dehaene, S -- Spelke, E -- Pinel, P -- Stanescu, R -- Tsivkin, S -- HD23103/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1999 May 7;284(5416):970-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Unite INSERM 334, Service Hospitalier Frederic Joliot, CEA/DSV, 91401 Orsay Cedex, France. dehaene@shfj.cea.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10320379" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Brain Mapping ; Evoked Potentials ; Female ; Frontal Lobe/*physiology ; Humans ; Intuition ; *Language ; Magnetic Resonance Imaging ; Male ; *Mathematics ; Parietal Lobe/*physiology ; *Thinking
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Structure of the VHL-ElonginC-ElonginB complex: implications for VHL tumor suppressor function (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-16
    Description: Mutation of the VHL tumor suppressor is associated with the inherited von Hippel-Lindau (VHL) cancer syndrome and the majority of kidney cancers. VHL binds the ElonginC-ElonginB complex and regulates levels of hypoxia-inducible proteins. The structure of the ternary complex at 2.7 angstrom resolution shows two interfaces, one between VHL and ElonginC and another between ElonginC and ElonginB. Tumorigenic mutations frequently occur in a 35-residue domain of VHL responsible for ElonginC binding. A mutational patch on a separate domain of VHL indicates a second macromolecular binding site. The structure extends the similarities to the SCF (Skp1-Cul1-F-box protein) complex that targets proteins for degradation, supporting the hypothesis that VHL may function in an analogous pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stebbins, C E -- Kaelin, W G Jr -- Pavletich, N P -- New York, N.Y. -- Science. 1999 Apr 16;284(5413):455-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Structural Biology, Joan and Sanford I. Weill Graduate School of Medical Sciences, Cornell University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10205047" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Cell Cycle Proteins/chemistry/metabolism ; Cloning, Molecular ; Crystallography, X-Ray ; *Genes, Tumor Suppressor ; Humans ; Hydrogen Bonding ; *Ligases ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Mutation, Missense ; Neoplasms/genetics ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Proteins/*chemistry/genetics/metabolism ; S-Phase Kinase-Associated Proteins ; Surface Properties ; Transcription Factors/*chemistry/metabolism ; *Tumor Suppressor Proteins ; *Ubiquitin-Protein Ligases ; Von Hippel-Lindau Tumor Suppressor Protein ; von Hippel-Lindau Disease/*genetics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    The path to specificity (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-02-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zuker, C S -- Ranganathan, R -- New York, N.Y. -- Science. 1999 Jan 29;283(5402):650-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Biology, University of California, San Diego, CA 92093-0649, USA. charles@flyeye.ucsd.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9988659" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arrestin/genetics/*metabolism ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Cell Membrane/metabolism ; Enzyme Activation ; GTP-Binding Proteins/metabolism ; Humans ; Models, Biological ; Mutation ; Phosphorylation ; Proto-Oncogene Proteins pp60(c-src)/*metabolism ; Receptor Cross-Talk ; Receptors, Adrenergic, beta-2/*metabolism ; *Signal Transduction ; src Homology Domains
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    Increased insulin sensitivity and obesity resistance in mice lacking the protein tyrosine phosphatase-1B gene (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-03-05
    Description: Protein tyrosine phosphatase-1B (PTP-1B) has been implicated in the negative regulation of insulin signaling. Disruption of the mouse homolog of the gene encoding PTP-1B yielded healthy mice that, in the fed state, had blood glucose concentrations that were slightly lower and concentrations of circulating insulin that were one-half those of their PTP-1B+/+ littermates. The enhanced insulin sensitivity of the PTP-1B-/- mice was also evident in glucose and insulin tolerance tests. The PTP-1B-/- mice showed increased phosphorylation of the insulin receptor in liver and muscle tissue after insulin injection in comparison to PTP-1B+/+ mice. On a high-fat diet, the PTP-1B-/- and PTP-1B+/- mice were resistant to weight gain and remained insulin sensitive, whereas the PTP-1B+/+ mice rapidly gained weight and became insulin resistant. These results demonstrate that PTP-1B has a major role in modulating both insulin sensitivity and fuel metabolism, thereby establishing it as a potential therapeutic target in the treatment of type 2 diabetes and obesity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Elchebly, M -- Payette, P -- Michaliszyn, E -- Cromlish, W -- Collins, S -- Loy, A L -- Normandin, D -- Cheng, A -- Himms-Hagen, J -- Chan, C C -- Ramachandran, C -- Gresser, M J -- Tremblay, M L -- Kennedy, B P -- New York, N.Y. -- Science. 1999 Mar 5;283(5407):1544-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, McGill University, 3655 Drummond Street, Montreal, Quebec, Canada, H3G 1Y6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10066179" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Glucose/metabolism ; Diabetes Mellitus, Type 2/therapy ; Dietary Fats/administration & dosage ; Gene Targeting ; Glucose Tolerance Test ; Insulin/blood/*metabolism/pharmacology ; Insulin Receptor Substrate Proteins ; Insulin Resistance ; Liver/metabolism ; Male ; Mice ; Mice, Knockout ; Muscle, Skeletal/metabolism ; Obesity/*metabolism/therapy ; Phosphoproteins/metabolism ; Phosphorylation ; Phosphotyrosine/metabolism ; Protein Tyrosine Phosphatases/*genetics/*metabolism ; Receptor, Insulin/metabolism ; Signal Transduction
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    Control of circadian rhythms and photoperiodic flowering by the Arabidopsis GIGANTEA gene (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-08
    Description: Photoperiodic responses in plants include flowering that is day-length-dependent. Mutations in the Arabidopsis thaliana GIGANTEA (GI) gene cause photoperiod-insensitive flowering and alteration of circadian rhythms. The GI gene encodes a protein containing six putative transmembrane domains. Circadian expression patterns of the GI gene and the clock-associated genes, LHY and CCA1, are altered in gi mutants, showing that GI is required for maintaining circadian amplitude and appropriate period length of these genes. The gi-1 mutation also affects light signaling to the clock, which suggests that GI participates in a feedback loop of the plant circadian system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Park, D H -- Somers, D E -- Kim, Y S -- Choy, Y H -- Lim, H K -- Soh, M S -- Kim, H J -- Kay, S A -- Nam, H G -- GM56006/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Sep 3;285(5433):1579-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Life Science, Pohang University of Science and Technology, Pohang, Kyungbuk, 790-784, Korea.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10477524" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/*genetics/*physiology ; *Arabidopsis Proteins ; *Circadian Rhythm ; Cloning, Molecular ; Crosses, Genetic ; DNA-Binding Proteins/genetics ; Darkness ; Feedback ; Gene Expression Regulation, Plant ; *Genes, Plant ; Light ; Molecular Sequence Data ; Mutation ; Photoperiod ; Plant Leaves/physiology ; Plant Proteins/chemistry/*genetics/physiology ; Plant Structures/physiology ; Sequence Deletion ; Transcription Factors/genetics
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    Control of autoimmune diabetes in NOD mice by GAD expression or suppression in beta cells (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-05-15
    Description: Glutamic acid decarboxylase (GAD) is a pancreatic beta cell autoantigen in humans and nonobese diabetic (NOD) mice. beta Cell-specific suppression of GAD expression in two lines of antisense GAD transgenic NOD mice prevented autoimmune diabetes, whereas persistent GAD expression in the beta cells in the other four lines of antisense GAD transgenic NOD mice resulted in diabetes, similar to that seen in transgene-negative NOD mice. Complete suppression of beta cell GAD expression blocked the generation of diabetogenic T cells and protected islet grafts from autoimmune injury. Thus, beta cell-specific GAD expression is required for the development of autoimmune diabetes in NOD mice, and modulation of GAD might, therefore, have therapeutic value in type 1 diabetes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yoon, J W -- Yoon, C S -- Lim, H W -- Huang, Q Q -- Kang, Y -- Pyun, K H -- Hirasawa, K -- Sherwin, R S -- Jun, H S -- DK 45735/DK/NIDDK NIH HHS/ -- DK 53015-01/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1999 May 14;284(5417):1183-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Viral and Immunopathogenesis of Diabetes, Julia McFarlane Diabetes Research Centre, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada. yoon@ucalgary.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10325232" target="_blank"〉PubMed〈/a〉
    Keywords: Adoptive Transfer ; Animals ; Autoantigens/genetics/*immunology/physiology ; Autoimmunity ; DNA, Antisense ; Diabetes Mellitus, Type 1/*enzymology/*immunology/pathology ; Female ; Gene Expression ; Glutamate Decarboxylase/genetics/*immunology/physiology ; Insulin/blood/metabolism ; Islets of Langerhans/*enzymology/immunology/metabolism/pathology ; Islets of Langerhans Transplantation ; Lymphocyte Activation ; Male ; Mice ; Mice, Inbred NOD ; Mice, SCID ; Mice, Transgenic ; T-Lymphocytes/immunology ; Transgenes
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Abnormal morphogenesis but intact IKK activation in mice lacking the IKKalpha subunit of IkappaB kinase (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-09
    Description: The oligomeric IkappaB kinase (IKK) is composed of three polypeptides: IKKalpha and IKKbeta, the catalytic subunits, and IKKgamma, a regulatory subunit. IKKalpha and IKKbeta are similar in structure and thought to have similar function-phosphorylation of the IkappaB inhibitors in response to proinflammatory stimuli. Such phosphorylation leads to degradation of IkappaB and activation of nuclear factor kappaB transcription factors. The physiological function of these protein kinases was explored by analysis of IKKalpha-deficient mice. IKKalpha was not required for activation of IKK and degradation of IkappaB by proinflammatory stimuli. Instead, loss of IKKalpha interfered with multiple morphogenetic events, including limb and skeletal patterning and proliferation and differentiation of epidermal keratinocytes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hu, Y -- Baud, V -- Delhase, M -- Zhang, P -- Deerinck, T -- Ellisman, M -- Johnson, R -- Karin, M -- R01 AI43477/AI/NIAID NIH HHS/ -- R37 ES04151/ES/NIEHS NIH HHS/ -- RR04050/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1999 Apr 9;284(5412):316-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Cancer Center, University of California San Diego, La Jolla, CA 92093-0636, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10195896" target="_blank"〉PubMed〈/a〉
    Keywords: Abnormalities, Multiple/enzymology/genetics ; Animals ; Apoptosis ; Body Patterning ; Bone and Bones/abnormalities/embryology ; Cell Differentiation ; Cell Nucleus/metabolism ; Cells, Cultured ; DNA-Binding Proteins/metabolism ; Dimerization ; *Embryonic and Fetal Development ; Enzyme Activation ; Epidermis/cytology/embryology ; Female ; Gene Targeting ; I-kappa B Kinase ; I-kappa B Proteins ; Keratinocytes ; Limb Deformities, Congenital/enzymology ; Male ; Mice ; *Morphogenesis ; Mutation ; Phosphorylation ; Protein-Serine-Threonine Kinases/chemistry/genetics/*metabolism ; Skin/embryology ; Skin Abnormalities/enzymology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Communication goes multimodal (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-03-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Partan, S -- Marler, P -- New York, N.Y. -- Science. 1999 Feb 26;283(5406):1272-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Animal Behavior, University of California, Davis, CA 95616, USA. srpartan@ucdavis.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10084931" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Communication ; Animals ; *Communication ; Cues ; Facial Expression ; Female ; Humans ; Male ; Pheromones/physiology ; Speech Perception ; Vocalization, Animal
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    Structural maturation of neural pathways in children and adolescents: in vivo study (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-03-19
    Description: Structural maturation of fiber tracts in the human brain, including an increase in the diameter and myelination of axons, may play a role in cognitive development during childhood and adolescence. A computational analysis of structural magnetic resonance images obtained in 111 children and adolescents revealed age-related increases in white matter density in fiber tracts constituting putative corticospinal and frontotemporal pathways. The maturation of the corticospinal tract was bilateral, whereas that of the frontotemporal pathway was found predominantly in the left (speech-dominant) hemisphere. These findings provide evidence for a gradual maturation, during late childhood and adolescence, of fiber pathways presumably supporting motor and speech functions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paus, T -- Zijdenbos, A -- Worsley, K -- Collins, D L -- Blumenthal, J -- Giedd, J N -- Rapoport, J L -- Evans, A C -- New York, N.Y. -- Science. 1999 Mar 19;283(5409):1908-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Montreal Neurological Institute, McGill University, 3801 University Street, Montreal, Quebec H3A 2B4, Canada. tomas@bic.mni.mcgill.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10082463" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; *Aging ; Axons/physiology/ultrastructure ; Brain/anatomy & histology/*growth & development ; Brain Mapping ; Child ; Child, Preschool ; Female ; Frontal Lobe/anatomy & histology/growth & development ; Humans ; Magnetic Resonance Imaging ; Male ; Motor Skills ; Myelin Sheath/ultrastructure ; Nerve Fibers/ultrastructure ; Neural Conduction ; Neural Pathways/anatomy & histology/*growth & development ; Regression Analysis ; Speech ; Spinal Cord/anatomy & histology ; Synaptic Transmission ; Temporal Lobe/anatomy & histology/growth & development
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    A glial-neuronal signaling pathway revealed by mutations in a neurexin-related protein (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-02-26
    Description: In the nervous system, glial cells greatly outnumber neurons but the full extent of their role in determining neural activity remains unknown. Here the axotactin (axo) gene of Drosophila was shown to encode a member of the neurexin protein superfamily secreted by glia and subsequently localized to axonal tracts. Null mutations of axo caused temperature-sensitive paralysis and a corresponding blockade of axonal conduction. Thus, the AXO protein appears to be a component of a glial-neuronal signaling mechanism that helps to determine the membrane electrical properties of target axons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yuan, L L -- Ganetzky, B -- GM43100/GM/NIGMS NIH HHS/ -- NS15390/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1999 Feb 26;283(5406):1343-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Neuroscience Training Program and Laboratory of Genetics, 445 Henry Mall, University of Wisconsin-Madison, Madison, WI 53706 USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10037607" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Axons/*physiology ; DNA, Complementary ; Drosophila/embryology/genetics/*physiology ; Embryo, Nonmammalian/physiology ; Gene Expression Regulation, Developmental ; Genes, Insect ; Insect Proteins/genetics/*physiology ; Ion Channels/physiology ; Mutation ; Neuroglia/*physiology ; Neuromuscular Junction/physiology ; *Signal Transduction ; Synaptic Transmission ; Temperature
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    Requirement for type 2 NO synthase for IL-12 signaling in innate immunity (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-05-13
    Description: Interleukin-12 (IL-12) and type 2 NO synthase (NOS2) are crucial for defense against bacterial and parasitic pathogens, but their relationship in innate immunity is unknown. In the absence of NOS2 activity, IL-12 was unable to prevent spreading of Leishmania parasites, did not stimulate natural killer (NK) cells for cytotoxicity or interferon-gamma (IFN-gamma) release, and failed to activate Tyk2 kinase and to tyrosine phosphorylate Stat4 (the central signal transducer of IL-12) in NK cells. Activation of Tyk2 in NK cells by IFN-alpha/beta also required NOS2. Thus, NOS2-derived NO is a prerequisite for cytokine signaling and function in innate immunity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Diefenbach, A -- Schindler, H -- Rollinghoff, M -- Yokoyama, W M -- Bogdan, C -- New York, N.Y. -- Science. 1999 May 7;284(5416):951-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Klinische Mikrobiologie, Immunologie und Hygiene, Universitat Erlangen, Wasserturmstrasse 3, D-91054 Erlangen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10320373" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Cyclic GMP/metabolism ; Cytotoxicity, Immunologic ; DNA-Binding Proteins/metabolism ; Enzyme Activation ; Enzyme Inhibitors/pharmacology ; Immunity, Innate ; Interferon-gamma/biosynthesis/genetics ; Interferons/pharmacology ; Interleukin-12/pharmacology/*physiology ; Janus Kinase 2 ; Killer Cells, Natural/*immunology/metabolism ; *Leishmania major ; Leishmaniasis, Cutaneous/*immunology/metabolism ; Lysine/analogs & derivatives/pharmacology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Nitric Oxide/metabolism ; Nitric Oxide Synthase/antagonists & inhibitors/*metabolism ; Nitric Oxide Synthase Type II ; Phosphorylation ; Protein-Tyrosine Kinases/metabolism ; Proteins/metabolism ; *Proto-Oncogene Proteins ; STAT4 Transcription Factor ; *Signal Transduction ; TYK2 Kinase ; Trans-Activators/metabolism ; Up-Regulation
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    Phosphorylation and sequestration of serotonin transporters differentially modulated by psychostimulants (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-07-31
    Description: Many psychotropic drugs interfere with the reuptake of dopamine, norepinephrine, and serotonin. Transport capacity is regulated by kinase-linked pathways, particularly those involving protein kinase C (PKC), resulting in transporter phosphorylation and sequestration. Phosphorylation and sequestration of the serotonin transporter (SERT) were substantially impacted by ligand occupancy. Ligands that can permeate the transporter, such as serotonin or the amphetamines, prevented PKC-dependent SERT phosphorylation. Nontransported SERT antagonists such as cocaine and antidepressants were permissive for SERT phosphorylation but blocked serotonin effects. PKC-dependent SERT sequestration was also blocked by serotonin. These findings reveal activity-dependent modulation of neurotransmitter reuptake and identify previously unknown consequences of amphetamine, cocaine, and antidepressant action.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ramamoorthy, S -- Blakely, R D -- DA07390/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1999 Jul 30;285(5428):763-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology and Center for Molecular Neuroscience, School of Medicine, Vanderbilt University, Nashville, TN 37232-6420, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10427004" target="_blank"〉PubMed〈/a〉
    Keywords: Antidepressive Agents/metabolism/pharmacology ; Biogenic Monoamines/metabolism/pharmacology ; Biotinylation ; Carrier Proteins/antagonists & inhibitors/*metabolism ; Cell Line ; Central Nervous System Agents/metabolism/*pharmacology ; Cocaine/metabolism/pharmacology ; Dextroamphetamine/metabolism/pharmacology ; Enzyme Activation ; Humans ; Ligands ; Membrane Glycoproteins/antagonists & inhibitors/*metabolism ; *Membrane Transport Proteins ; Models, Biological ; *Nerve Tissue Proteins ; Neurotransmitter Agents/metabolism/*pharmacology ; Phosphorylation ; Protein Kinase C/metabolism ; Protein Kinases/metabolism ; Serotonin/*metabolism/pharmacology ; Serotonin Antagonists/pharmacology ; Serotonin Plasma Membrane Transport Proteins ; Serotonin Uptake Inhibitors/metabolism/pharmacology ; Tetradecanoylphorbol Acetate/pharmacology
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    Real-time tracking of memory formation in the human rhinal cortex and hippocampus (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-08
    Description: A fundamental question about human memory is which brain structures are involved, and when, in transforming experiences into memories. This experiment sought to identify neural correlates of memory formation with the use of intracerebral electrodes implanted in the brains of patients with temporal lobe epilepsy. Event-related potentials (ERPs) were recorded directly from the medial temporal lobe (MTL) as the patients studied single words. ERPs elicited by words subsequently recalled in a memory test were contrasted with ERPs elicited by unrecalled words. Memory formation was associated with distinct but interrelated ERP differences within the rhinal cortex and the hippocampus, which arose after about 300 and 500 milliseconds, respectively. These findings suggest that declarative memory formation is dissociable into subprocesses and sequentially organized within the MTL.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fernandez, G -- Effern, A -- Grunwald, T -- Pezer, N -- Lehnertz, K -- Dumpelmann, M -- Van Roost, D -- Elger, C E -- New York, N.Y. -- Science. 1999 Sep 3;285(5433):1582-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Epileptology, University of Bonn, 53105 Bonn, Germany. gf@mailer.meb.uni-bonn.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10477525" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Analysis of Variance ; Brain Mapping ; Electrodes, Implanted ; Epilepsy, Temporal Lobe/physiopathology ; Evoked Potentials ; Female ; Hippocampus/*physiology ; Humans ; Magnetic Resonance Imaging ; Male ; Memory/*physiology ; Mental Recall/*physiology ; Middle Aged ; Neurons/physiology ; Temporal Lobe/*physiology ; Time Factors
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    Prospects for in utero human gene therapy (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-10-16
    Description: Gene therapy for the treatment of disease in children and adults is being actively pursued at many medical centers. However, a number of genetic disorders result in irreversible damage to the fetus before birth. In these cases, as well as for those with genetic diseases who may benefit from therapy before symptoms are manifested, in utero gene therapy (IUGT) could be beneficial. Although some successes with in utero gene transfer have been reported in animals, significant questions remain to be answered before IUGT clinical trials would be acceptable. This review analyzes the state of the art and delineates the studies that still need to be performed before it would be appropriate to consider human IUGT.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zanjani, E D -- Anderson, W F -- New York, N.Y. -- Science. 1999 Sep 24;285(5436):2084-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Veterans Administration Medical Center, University of Nevada, Reno, NV 89520, USA. zanjani@scs.unr.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10523208" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; Fetal Diseases/*therapy ; *Fetus ; Gene Transfer Techniques ; Genetic Diseases, Inborn/*therapy ; *Genetic Therapy/adverse effects ; Genetic Vectors ; Germ Cells ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/cytology/physiology ; Humans ; Pregnancy
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    Cell survival promoted by the Ras-MAPK signaling pathway by transcription-dependent and -independent mechanisms (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-11-13
    Description: A mechanism by which the Ras-mitogen-activated protein kinase (MAPK) signaling pathway mediates growth factor-dependent cell survival was characterized. The MAPK-activated kinases, the Rsks, catalyzed the phosphorylation of the pro-apoptotic protein BAD at serine 112 both in vitro and in vivo. The Rsk-induced phosphorylation of BAD at serine 112 suppressed BAD-mediated apoptosis in neurons. Rsks also are known to phosphorylate the transcription factor CREB (cAMP response element-binding protein) at serine 133. Activated CREB promoted cell survival, and inhibition of CREB phosphorylation at serine 133 triggered apoptosis. These findings suggest that the MAPK signaling pathway promotes cell survival by a dual mechanism comprising the posttranslational modification and inactivation of a component of the cell death machinery and the increased transcription of pro-survival genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bonni, A -- Brunet, A -- West, A E -- Datta, S R -- Takasu, M A -- Greenberg, M E -- NIHP30-HD18655/HD/NICHD NIH HHS/ -- P01 HD 24926/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1999 Nov 12;286(5443):1358-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neuroscience, Children's Hospital, and Department of Neurobiology, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10558990" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Brain-Derived Neurotrophic Factor/pharmacology ; Carrier Proteins/genetics/metabolism ; *Cell Survival ; Cells, Cultured ; Cerebellum/cytology ; Cyclic AMP Response Element-Binding Protein/metabolism ; Enzyme Activation ; Enzyme Inhibitors/pharmacology ; Flavonoids/pharmacology ; Insulin-Like Growth Factor I/pharmacology ; MAP Kinase Kinase 1 ; *MAP Kinase Signaling System ; Mitogen-Activated Protein Kinase Kinases/antagonists & inhibitors/metabolism ; Mitogen-Activated Protein Kinases/antagonists & inhibitors/metabolism ; Mutation ; Neurons/*cytology/metabolism ; Phosphorylation ; Phosphoserine/metabolism ; *Protein-Serine-Threonine Kinases ; Rats ; Rats, Long-Evans ; Recombinant Fusion Proteins/metabolism ; Ribosomal Protein S6 Kinases/genetics/*metabolism ; *Transcription, Genetic ; Transfection ; bcl-Associated Death Protein ; ras Proteins/metabolism
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    Sex in an age of mechanical reproduction (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-07-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Djerassi, C -- New York, N.Y. -- Science. 1999 Jul 2;285(5424):53-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Stanford University, Stanford, CA 94305-5080, USA. djerassi@stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10428703" target="_blank"〉PubMed〈/a〉
    Keywords: *Bioethics ; Female ; *Fertilization in Vitro ; Humans ; Male ; Posthumous Conception ; *Reproductive Techniques
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    Signaling of cell fate decisions by CLAVATA3 in Arabidopsis shoot meristems (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-03-19
    Description: In higher plants, organogenesis occurs continuously from self-renewing apical meristems. Arabidopsis thaliana plants with loss-of-function mutations in the CLAVATA (CLV1, 2, and 3) genes have enlarged meristems and generate extra floral organs. Genetic analysis indicates that CLV1, which encodes a receptor kinase, acts with CLV3 to control the balance between meristem cell proliferation and differentiation. CLV3 encodes a small, predicted extracellular protein. CLV3 acts nonautonomously in meristems and is expressed at the meristem surface overlying the CLV1 domain. These proteins may act as a ligand-receptor pair in a signal transduction pathway, coordinating growth between adjacent meristematic regions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fletcher, J C -- Brand, U -- Running, M P -- Simon, R -- Meyerowitz, E M -- New York, N.Y. -- Science. 1999 Mar 19;283(5409):1911-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10082464" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Arabidopsis/*cytology/genetics/growth & development/metabolism ; *Arabidopsis Proteins ; Cell Differentiation ; Cell Division ; Cloning, Molecular ; Gene Expression Regulation, Plant ; Genes, Plant ; In Situ Hybridization ; Ligands ; Meristem/*cytology/growth & development/metabolism ; Molecular Sequence Data ; Mutation ; Phenotype ; Plant Proteins/chemistry/genetics/*metabolism ; Plant Shoots/cytology ; RNA, Messenger/genetics/metabolism ; RNA, Plant/genetics/metabolism ; Receptor Protein-Tyrosine Kinases/genetics/metabolism ; Recombinant Fusion Proteins/metabolism ; *Signal Transduction
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    Breast cancer detection (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-05-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Joseph, L P -- New York, N.Y. -- Science. 1999 Apr 30;284(5415):743.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10336395" target="_blank"〉PubMed〈/a〉
    Keywords: Breast Neoplasms/*diagnosis/etiology/radiography ; Female ; Humans ; Mammography/*adverse effects ; Neoplasms, Radiation-Induced/etiology ; *Thermography
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    A nucleoside transporter from Trypanosoma brucei involved in drug resistance (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-07-10
    Description: Drug resistance of pathogens is an increasing problem whose underlying mechanisms are not fully understood. Cellular uptake of the major drugs against Trypanosoma brucei spp., the causative agents of sleeping sickness, is thought to occur through an unusual, so far unidentified adenosine transporter. Saccharomyces cerevisiae was used in a functional screen to clone a gene (TbAT1) from Trypanosoma brucei brucei that encodes a nucleoside transporter. When expressed in yeast, TbAT1 enabled adenosine uptake and conferred susceptibility to melaminophenyl arsenicals. Drug-resistant trypanosomes harbor a defective TbAT1 variant. The molecular identification of the entry route of trypanocides opens the way to approaches for diagnosis and treatment of drug-resistant sleeping sickness.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maser, P -- Sutterlin, C -- Kralli, A -- Kaminsky, R -- New York, N.Y. -- Science. 1999 Jul 9;285(5425):242-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Swiss Tropical Institute, CH-4002 Basel, Switzerland. Biozentrum, University of Basel, CH-4056 Basel, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10398598" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/*metabolism ; Amino Acid Sequence ; Animals ; Arsenicals/metabolism/pharmacology ; Biological Transport ; Carrier Proteins/chemistry/genetics/*metabolism ; Cloning, Molecular ; Drug Resistance/genetics ; Genes, Protozoan ; Membrane Proteins/chemistry/genetics/*metabolism ; Molecular Sequence Data ; Mutation ; Nucleoside Transport Proteins ; Nucleosides/metabolism ; Purines/metabolism/pharmacology ; Saccharomyces cerevisiae/genetics ; Substrate Specificity ; Trypanocidal Agents/metabolism/*pharmacology ; Trypanosoma brucei brucei/*drug effects/genetics/*metabolism ; Trypanosomiasis, African/drug therapy/parasitology
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    Apaf-1 and caspase-9 in p53-dependent apoptosis and tumor inhibition (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-02
    Description: The ability of p53 to promote apoptosis in response to mitogenic oncogenes appears to be critical for its tumor suppressor function. Caspase-9 and its cofactor Apaf-1 were found to be essential downstream components of p53 in Myc-induced apoptosis. Like p53 null cells, mouse embryo fibroblast cells deficient in Apaf-1 and caspase-9, and expressing c-Myc, were resistant to apoptotic stimuli that mimic conditions in developing tumors. Inactivation of Apaf-1 or caspase-9 substituted for p53 loss in promoting the oncogenic transformation of Myc-expressing cells. These results imply a role for Apaf-1 and caspase-9 in controlling tumor development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Soengas, M S -- Alarcon, R M -- Yoshida, H -- Giaccia, A J -- Hakem, R -- Mak, T W -- Lowe, S W -- CA13106/CA/NCI NIH HHS/ -- CA64489/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1999 Apr 2;284(5411):156-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10102818" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Apoptotic Protease-Activating Factor 1 ; Caspase 9 ; Caspases/genetics/*physiology ; Cell Division ; Cell Transformation, Neoplastic ; Cells, Cultured ; Cytochrome c Group/metabolism ; Genes, myc ; *Genes, p53 ; Genes, ras ; Mice ; Mice, Nude ; Mitochondria/metabolism ; Mutation ; Neoplasms, Experimental/genetics/metabolism/*pathology ; Proteins/genetics/*physiology ; Tumor Suppressor Protein p53/metabolism
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    New clues to how proteins link up to run the cell (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-03-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1999 Feb 26;283(5406):1247, 1249.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10084927" target="_blank"〉PubMed〈/a〉
    Keywords: 14-3-3 Proteins ; Amino Acid Sequence ; Cell Cycle Proteins/metabolism ; Cell Nucleus/metabolism ; *Conserved Sequence ; Mitosis ; Peptidylprolyl Isomerase/metabolism ; Phosphoprotein Phosphatases/metabolism ; Phosphoproteins/chemistry/*metabolism ; Phosphorylation ; Phosphoserine/*metabolism ; Phosphotyrosine/metabolism ; Protein Binding ; Proteins/*chemistry/*metabolism ; *Tyrosine 3-Monooxygenase ; cdc25 Phosphatases
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    Rapid infection of oral mucosal-associated lymphoid tissue with simian immunodeficiency virus (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-08-24
    Description: The early events during infection with an immunodeficiency virus were followed by application of pathogenic simian immunodeficiency virus atraumatically to the tonsils of macaques. Analyses by virologic assays and in situ hybridization revealed that the infection started locally in the tonsils, a mucosal-associated lymphoid organ, and quickly spread to other lymphoid tissues. At day 3, there were few infected cells, but then the number increased rapidly, reaching a high plateau between days 4 and 7. The infection was not detected in the dendritic cell-rich squamous epithelium to which the virus was applied; instead, it was primarily in CD4+ tonsillar T cells, close to the specialized antigen-transporting epithelium of the tonsillar crypts. Transport of the virus and immune-activating stimuli across this epithelium would allow mucosal lymphoid tissue to function in the atraumatic transmission of immunodeficiency viruses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stahl-Hennig, C -- Steinman, R M -- Tenner-Racz, K -- Pope, M -- Stolte, N -- Matz-Rensing, K -- Grobschupff, G -- Raschdorff, B -- Hunsmann, G -- Racz, P -- AI 40874/AI/NIAID NIH HHS/ -- AI 40877/AI/NIAID NIH HHS/ -- AI 42129/AI/NIAID NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1999 Aug 20;285(5431):1261-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉German Primate Center, 37077 Gottingen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10455052" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CD4-Positive T-Lymphocytes/virology ; Epithelium/virology ; Female ; In Situ Hybridization ; Leukocytes, Mononuclear/virology ; Lymph Nodes/virology ; Lymphoid Tissue/*virology ; Macaca mulatta ; Male ; Mouth Mucosa/*virology ; Palatine Tonsil/*virology ; Simian Acquired Immunodeficiency Syndrome/transmission/*virology ; Simian Immunodeficiency Virus/*physiology ; Viral Load ; Virus Replication
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    Structural basis of Smad2 recognition by the Smad anchor for receptor activation (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-12-30
    Description: The Smad proteins mediate transforming growth factor-beta (TGFbeta) signaling from the transmembrane serine-threonine receptor kinases to the nucleus. The Smad anchor for receptor activation (SARA) recruits Smad2 to the TGFbeta receptors for phosphorylation. The crystal structure of a Smad2 MH2 domain in complex with the Smad-binding domain (SBD) of SARA has been determined at 2.2 angstrom resolution. SARA SBD, in an extended conformation comprising a rigid coil, an alpha helix, and a beta strand, interacts with the beta sheet and the three-helix bundle of Smad2. Recognition between the SARA rigid coil and the Smad2 beta sheet is essential for specificity, whereas interactions between the SARA beta strand and the Smad2 three-helix bundle contribute significantly to binding affinity. Comparison of the structures between Smad2 and a comediator Smad suggests a model for how receptor-regulated Smads are recognized by the type I receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, G -- Chen, Y G -- Ozdamar, B -- Gyuricza, C A -- Chong, P A -- Wrana, J L -- Massague, J -- Shi, Y -- CA85171/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2000 Jan 7;287(5450):92-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Princeton University, Lewis Thomas Laboratory, Princeton, NJ 08544, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10615055" target="_blank"〉PubMed〈/a〉
    Keywords: *Activin Receptors, Type I ; Amino Acid Sequence ; Binding Sites ; Carrier Proteins/*chemistry/*metabolism ; Crystallography, X-Ray ; DNA-Binding Proteins/*chemistry/genetics/*metabolism ; Hydrogen Bonding ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Phosphorylation ; Point Mutation ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein-Serine-Threonine Kinases/chemistry/genetics/metabolism ; Receptors, Transforming Growth Factor beta/chemistry/genetics/metabolism ; Recombinant Fusion Proteins/chemistry/metabolism ; Signal Transduction ; Smad2 Protein ; Trans-Activators/*chemistry/genetics/*metabolism ; Zinc Fingers
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    Neandertals: not so fast (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-01-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolpoff, M H -- New York, N.Y. -- Science. 1998 Dec 11;282(5396):1991.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9874646" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; DNA, Mitochondrial/*genetics ; Evolution, Molecular ; Gene Frequency ; Hominidae/*genetics ; Humans ; Mutation ; Phylogeny ; Selection, Genetic
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    Requirement of circadian genes for cocaine sensitization in Drosophila (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-08-14
    Description: The circadian clock consists of a feedback loop in which clock genes are rhythmically expressed, giving rise to cycling levels of RNA and proteins. Four of the five circadian genes identified to date influence responsiveness to freebase cocaine in the fruit fly, Drosophila melanogaster. Sensitization to repeated cocaine exposures, a phenomenon also seen in humans and animal models and associated with enhanced drug craving, is eliminated in flies mutant for period, clock, cycle, and doubletime, but not in flies lacking the gene timeless. Flies that do not sensitize owing to lack of these genes do not show the induction of tyrosine decarboxylase normally seen after cocaine exposure. These findings indicate unexpected roles for these genes in regulating cocaine sensitization and indicate that they function as regulators of tyrosine decarboxylase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Andretic, R -- Chaney, S -- Hirsh, J -- DA05942/DA/NIDA NIH HHS/ -- GM/DA 27318/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Aug 13;285(5430):1066-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Gilmer Hall, University of Virginia, Charlottesville, VA 22903, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10446052" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors ; Animals ; Basic Helix-Loop-Helix Transcription Factors ; Behavior, Animal/drug effects ; Biological Clocks/genetics ; CLOCK Proteins ; *Casein Kinase Iepsilon ; Circadian Rhythm/*genetics ; Cocaine/*pharmacology ; Dopamine Agonists/pharmacology ; *Drosophila Proteins ; Drosophila melanogaster/*drug effects/genetics/physiology ; *Genes, Insect ; Insect Proteins/genetics/physiology ; Male ; Motor Activity/drug effects ; Mutation ; Nuclear Proteins/*genetics/physiology ; Period Circadian Proteins ; Protein Kinases/genetics/physiology ; Quinpirole/pharmacology ; Receptors, Dopamine D2/agonists/physiology ; Trans-Activators/genetics/physiology ; Transcription Factors/genetics ; Tyramine/metabolism/pharmacology ; Tyrosine Decarboxylase/metabolism
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    Negative regulation of Wingless signaling by D-axin, a Drosophila homolog of axin (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-03-12
    Description: Wnt/Wingless directs many cell fates during development. Wnt/Wingless signaling increases the amount of beta-catenin/Armadillo, which in turn activates gene transcription. Here the Drosophila protein D-Axin was shown to interact with Armadillo and D-APC. Mutation of d-axin resulted in the accumulation of cytoplasmic Armadillo and one of the Wingless target gene products, Distal-less. Ectopic expression of d-axin inhibited Wingless signaling. Hence, D-Axin negatively regulates Wingless signaling by down-regulating the level of Armadillo. These results establish the importance of the Axin family of proteins in Wnt/Wingless signaling in Drosophila.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hamada, F -- Tomoyasu, Y -- Takatsu, Y -- Nakamura, M -- Nagai, S -- Suzuki, A -- Fujita, F -- Shibuya, H -- Toyoshima, K -- Ueno, N -- Akiyama, T -- New York, N.Y. -- Science. 1999 Mar 12;283(5408):1739-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Oncogene Research, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita 565-0871, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10073940" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Adenomatous Polyposis Coli Protein ; Animals ; Armadillo Domain Proteins ; Axin Protein ; Body Patterning ; Carrier Proteins/chemistry/genetics/*metabolism ; Chromosome Mapping ; Cytoplasm/metabolism ; Cytoskeletal Proteins/metabolism ; Down-Regulation ; Drosophila/*embryology/genetics/metabolism ; *Drosophila Proteins ; Embryo, Nonmammalian/metabolism ; Extremities/embryology ; Gene Expression Regulation, Developmental ; Genes, Insect ; Homeodomain Proteins/genetics/metabolism ; In Situ Hybridization ; Insect Proteins/genetics/metabolism ; Molecular Sequence Data ; Mutation ; Phenotype ; Proteins/chemistry/genetics/*metabolism ; Proto-Oncogene Proteins/*metabolism ; Recombinant Fusion Proteins/metabolism ; *Repressor Proteins ; *Signal Transduction ; *Trans-Activators ; *Transcription Factors ; Wings, Animal/embryology/metabolism ; Wnt1 Protein
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  • 85
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    Genetics of mouse behavior: interactions with laboratory environment (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-06-05
    Description: Strains of mice that show characteristic patterns of behavior are critical for research in neurobehavioral genetics. Possible confounding influences of the laboratory environment were studied in several inbred strains and one null mutant by simultaneous testing in three laboratories on a battery of six behaviors. Apparatus, test protocols, and many environmental variables were rigorously equated. Strains differed markedly in all behaviors, and despite standardization, there were systematic differences in behavior across labs. For some tests, the magnitude of genetic differences depended upon the specific testing lab. Thus, experiments characterizing mutants may yield results that are idiosyncratic to a particular laboratory.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crabbe, J C -- Wahlsten, D -- Dudek, B C -- AA00170/AA/NIAAA NIH HHS/ -- AA10760/AA/NIAAA NIH HHS/ -- DA10731/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1999 Jun 4;284(5420):1670-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Portland Alcohol Research Center, Department of Veterans Affairs Medical Center, Portland, OR 97201, USA. crabbe@ohsu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10356397" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Laboratory/genetics ; Anxiety ; *Behavior, Animal ; Confounding Factors (Epidemiology) ; Drinking Behavior ; *Environment ; Female ; Genetics, Behavioral/*methods ; Genotype ; Male ; Mice ; Mice, Inbred Strains/genetics ; Mice, Mutant Strains/genetics ; Motor Activity ; Psychological Tests ; Reproducibility of Results
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  • 86
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    An allele of COL9A2 associated with intervertebral disc disease (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-07-20
    Description: Intervertebral disc disease is one of the most common musculoskeletal disorders. A number of environmental and anthropometric risk factors may contribute to it, and recent reports have suggested the importance of genetic factors as well. The COL9A2 gene, which codes for one of the polypeptide chains of collagen IX that is expressed in the intervertebral disc, was screened for sequence variations in individuals with intervertebral disc disease. The analysis identified a putative disease-causing sequence variation that converted a codon for glutamine to one for tryptophan in six out of the 157 individuals but in none of 174 controls. The tryptophan allele cosegregated with the disease phenotype in the four families studied, giving a lod score (logarithm of odds ratio) for linkage of 4.5, and subsequent linkage disequilibrium analysis conditional on linkage gave an additional lod score of 7.1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Annunen, S -- Paassilta, P -- Lohiniva, J -- Perala, M -- Pihlajamaa, T -- Karppinen, J -- Tervonen, O -- Kroger, H -- Lahde, S -- Vanharanta, H -- Ryhanen, L -- Goring, H H -- Ott, J -- Prockop, D J -- Ala-Kokko, L -- AR39740/AR/NIAMS NIH HHS/ -- HG00008/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 1999 Jul 16;285(5426):409-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Collagen Research Unit, Biocenter and Department of Medical Biochemistry, University of Oulu, 90220 Oulu, Finland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10411504" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Alleles ; Amino Acid Substitution ; Case-Control Studies ; Codon ; Collagen/chemistry/*genetics ; *Collagen Type IX ; Female ; Genetic Linkage ; *Genetic Predisposition to Disease ; Humans ; Intervertebral Disc Displacement/*genetics ; Linkage Disequilibrium ; Male ; Middle Aged ; Mutation ; Penetrance ; Polymorphism, Genetic ; Sciatica/*genetics ; Tryptophan/genetics
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  • 87
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    First components found for new kidney filter (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-11-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wickelgren, I -- New York, N.Y. -- Science. 1999 Oct 8;286(5438):225-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10577188" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing ; Animals ; Cells, Cultured ; Chromosomes, Human, Pair 19/genetics ; Cytoskeletal Proteins ; Humans ; Intercellular Junctions/metabolism/ultrastructure ; Kidney Glomerulus/blood supply/chemistry/*metabolism/*ultrastructure ; Membrane Proteins ; Mice ; Mice, Knockout ; Microscopy, Electron ; Mutation ; Nephrotic Syndrome/congenital/genetics/pathology ; Proteins/chemistry/genetics/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 88
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    Perspectives: cell biology. All creatures great and small (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-10-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leevers, S J -- New York, N.Y. -- Science. 1999 Sep 24;285(5436):2082-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ludwig Institute for Cancer Research, London, UK. sallyl@ludwig.ucl.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10523207" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Constitution ; Carrier Proteins/genetics/metabolism ; Cell Count ; Cell Division ; Cell Size ; Drosophila/*enzymology/genetics/*growth & development ; *Drosophila Proteins ; Genes, Insect ; Insect Proteins/biosynthesis/genetics/metabolism ; Insulin/metabolism ; Insulin Receptor Substrate Proteins ; *Intracellular Signaling Peptides and Proteins ; Mutation ; Phosphatidylinositol 3-Kinases/genetics/metabolism ; *Protein-Serine-Threonine Kinases ; Protein-Tyrosine Kinases/genetics/metabolism ; Proto-Oncogene Proteins/genetics/metabolism ; Proto-Oncogene Proteins c-akt ; *Receptor Protein-Tyrosine Kinases ; Receptor, Insulin/genetics/metabolism ; Ribosomal Protein S6 Kinases/genetics/*metabolism ; Signal Transduction
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  • 89
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    Dynamic control of CaMKII translocation and localization in hippocampal neurons by NMDA receptor stimulation (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-02
    Description: Calcium-calmodulin-dependent protein kinase II (CaMKII) is thought to increase synaptic strength by phosphorylating postsynaptic density (PSD) ion channels and signaling proteins. It is shown that N-methyl-D-aspartate (NMDA) receptor stimulation reversibly translocates green fluorescent protein-tagged CaMKII from an F-actin-bound to a PSD-bound state. The translocation time was controlled by the ratio of expressed beta-CaMKII to alpha-CaMKII isoforms. Although F-actin dissociation into the cytosol required autophosphorylation of or calcium-calmodulin binding to beta-CaMKII, PSD translocation required binding of calcium-calmodulin to either the alpha- or beta-CaMKII subunits. Autophosphorylation of CaMKII indirectly prolongs its PSD localization by increasing the calmodulin-binding affinity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shen, K -- Meyer, T -- GM-48113/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Apr 2;284(5411):162-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology and Department of Pharmacology and Cancer Biology, Box 3709, 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/10102820" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Animals ; Calcium/pharmacology ; Calcium-Calmodulin-Dependent Protein Kinase Type 2 ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cells, Cultured ; Cytosol/metabolism ; Dendrites/*enzymology ; Electric Stimulation ; Glutamic Acid/pharmacology ; Green Fluorescent Proteins ; Hippocampus/cytology/*enzymology ; Isoenzymes/metabolism ; Luminescent Proteins ; Microscopy, Fluorescence ; Nerve Tissue Proteins/analysis ; Neurons/*enzymology ; Phosphorylation ; Rats ; Receptors, N-Methyl-D-Aspartate/*metabolism ; Synapses/*enzymology ; Tumor Cells, Cultured
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  • 90
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    Perspectives: biomedicine. The benefits of recycling (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Steel, K P -- New York, N.Y. -- Science. 1999 Aug 27;285(5432):1363-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Institute of Hearing Research, University Park, Nottingham NG7 2RD, UK. karen@ihr.mrc.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10490411" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carrier Proteins/genetics/metabolism ; Cochlea/metabolism ; Cochlear Duct/*metabolism/ultrastructure ; *DNA-Binding Proteins ; Deafness/genetics/*metabolism/pathology ; Endolymph/metabolism ; Evoked Potentials, Auditory, Brain Stem ; Extracellular Matrix Proteins ; Eye Proteins/genetics/metabolism ; Genetic Linkage ; Hair Cells, Auditory/cytology/physiology ; Humans ; Ion Transport ; *Membrane Transport Proteins ; Mice ; Mutation ; Nerve Tissue Proteins/genetics/metabolism ; POU Domain Factors ; Potassium/*metabolism ; Potassium Channels/genetics/metabolism ; Proteins/genetics/metabolism ; Transcription Factors/genetics/*metabolism ; X Chromosome
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  • 91
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    Reconstitution of G1 cyclin ubiquitination with complexes containing SCFGrr1 and Rbx1 (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-24
    Description: Control of cyclin levels is critical for proper cell cycle regulation. In yeast, the stability of the G1 cyclin Cln1 is controlled by phosphorylation-dependent ubiquitination. Here it is shown that this reaction can be reconstituted in vitro with an SCF E3 ubiquitin ligase complex. Phosphorylated Cln1 was ubiquitinated by SCF (Skp1-Cdc53-F-box protein) complexes containing the F-box protein Grr1, Rbx1, and the E2 Cdc34. Rbx1 promotes association of Cdc34 with Cdc53 and stimulates Cdc34 auto-ubiquitination in the context of Cdc53 or SCF complexes. Rbx1, which is also a component of the von Hippel-Lindau tumor suppressor complex, may define a previously unrecognized class of E3-associated proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Skowyra, D -- Koepp, D M -- Kamura, T -- Conrad, M N -- Conaway, R C -- Conaway, J W -- Elledge, S J -- Harper, J W -- AG11085/AG/NIA NIH HHS/ -- GM41628/GM/NIGMS NIH HHS/ -- GM54137/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):662-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Verna and Marrs McLean Department of Biochemistry, Howard Hughes Medical Institute, 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/10213692" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Anaphase-Promoting Complex-Cyclosome ; Animals ; Carrier Proteins/chemistry/*metabolism ; Cell Cycle Proteins/metabolism ; Cell Line ; *Cullin Proteins ; Cyclins/*metabolism ; F-Box Proteins ; Fungal Proteins/*metabolism ; Ligases/metabolism ; Molecular Sequence Data ; Peptide Synthases/*metabolism ; Phosphorylation ; Recombinant Fusion Proteins/metabolism ; S-Phase Kinase-Associated Proteins ; SKP Cullin F-Box Protein Ligases ; Saccharomyces cerevisiae/metabolism ; *Saccharomyces cerevisiae Proteins ; Sequence Alignment ; Ubiquitin-Conjugating Enzymes ; *Ubiquitin-Protein Ligase Complexes ; Ubiquitin-Protein Ligases ; Ubiquitins/*metabolism
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  • 92
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    Evolutionarily conserved pathways of energetic connectivity in protein families (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-10-09
    Description: For mapping energetic interactions in proteins, a technique was developed that uses evolutionary data for a protein family to measure statistical interactions between amino acid positions. For the PDZ domain family, this analysis predicted a set of energetically coupled positions for a binding site residue that includes unexpected long-range interactions. Mutational studies confirm these predictions, demonstrating that the statistical energy function is a good indicator of thermodynamic coupling in proteins. Sets of interacting residues form connected pathways through the protein fold that may be the basis for efficient energy conduction within proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lockless, S W -- Ranganathan, R -- New York, N.Y. -- Science. 1999 Oct 8;286(5438):295-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Pharmacology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75235-9050, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10514373" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acids/chemistry/metabolism ; Binding Sites ; Conserved Sequence ; *Evolution, Molecular ; Models, Molecular ; Mutation ; Probability ; Protein Binding ; Protein Conformation ; Protein Folding ; Protein Structure, Tertiary ; Proteins/*chemistry/*metabolism ; Recombinant Fusion Proteins/chemistry/metabolism ; Sequence Alignment ; Statistics as Topic ; Thermodynamics
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  • 93
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    Genetic study shakes up out of Africa theory (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1999 Mar 19;283(5409):1828.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10206882" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Animals ; *Biological Evolution ; Evolution, Molecular ; Haplotypes ; *Hominidae/genetics ; Humans ; Mutation ; *Pyruvate Dehydrogenase (Lipoamide) ; Pyruvate Dehydrogenase Complex/genetics ; X Chromosome
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  • 94
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    A phospholipase C-dependent inositol polyphosphate kinase pathway required for efficient messenger RNA export (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-07-03
    Description: In order to identify additional factors required for nuclear export of messenger RNA, a genetic screen was conducted with a yeast mutant deficient in a factor Gle1p, which associates with the nuclear pore complex (NPC). The three genes identified encode phospholipase C and two potential inositol polyphosphate kinases. Together, these constitute a signaling pathway from phosphatidylinositol 4, 5-bisphosphate to inositol hexakisphosphate (IP6). The common downstream effects of mutations in each component were deficiencies in IP6 synthesis and messenger RNA export, indicating a role for IP6 in GLE1 function and messenger RNA export.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉York, J D -- Odom, A R -- Murphy, R -- Ives, E B -- Wente, S R -- New York, N.Y. -- Science. 1999 Jul 2;285(5424):96-100.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Duke University Medical Center, DUMC 3813, Durham, NC 27710, USA. yorkj@acpub.duke.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10390371" target="_blank"〉PubMed〈/a〉
    Keywords: Biological Transport ; Carrier Proteins/genetics/*metabolism ; Genes, Fungal ; Genetic Complementation Test ; Inositol Phosphates/metabolism ; Mutation ; Nuclear Envelope/*metabolism ; Nuclear Pore Complex Proteins ; Phosphotransferases (Alcohol Group Acceptor)/genetics/*metabolism ; Phytic Acid/metabolism ; RNA, Fungal/metabolism ; RNA, Messenger/*metabolism ; Saccharomyces cerevisiae/genetics/*metabolism ; *Saccharomyces cerevisiae Proteins ; Signal Transduction ; Type C Phospholipases/*metabolism
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  • 95
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    An aqueous channel for filamentous phage export (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-05-29
    Description: Filamentous phage f1 exits its Escherichia coli host without killing the bacterial cell. It has been proposed that f1 is secreted through the outer membrane via a phage-encoded channel protein, pIV. A functional pIV mutant was isolated that allowed E. coli to grow on large maltodextrins and rendered E. coli sensitive to large hydrophilic antibiotics that normally do not penetrate the outer membrane. In planar lipid bilayers, both mutant and wild-type pIV formed highly conductive channels with similar permeability characteristics but different gating properties: the probability of the wild-type channel being open was much less than that of the mutant channel. The high conductivity of pIV channels suggests a large-diameter pore, thus implicating pIV as the outer membrane phage-conducting channel.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marciano, D K -- Russel, M -- Simon, S M -- GM07739/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 May 28;284(5419):1516-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10348737" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-Bacterial Agents/pharmacology ; Biological Transport ; Carbohydrate Metabolism ; Cell Membrane/metabolism ; Cell Membrane Permeability ; Coliphages/*metabolism ; Electric Conductivity ; Electrophysiology ; Escherichia coli/metabolism/*virology ; Inovirus/*metabolism ; Ion Channel Gating ; Ion Channels/*metabolism ; Lipid Bilayers ; Membrane Proteins/*metabolism ; Mutation ; Polysaccharides/metabolism ; Porins/metabolism ; Proteolipids ; Vancomycin/pharmacology ; Viral Nonstructural Proteins/chemistry/genetics/isolation & ; purification/*metabolism
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  • 96
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    Structure of an E6AP-UbcH7 complex: insights into ubiquitination by the E2-E3 enzyme cascade (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-11-13
    Description: The E6AP ubiquitin-protein ligase (E3) mediates the human papillomavirus-induced degradation of the p53 tumor suppressor in cervical cancer and is mutated in Angelman syndrome, a neurological disorder. The crystal structure of the catalytic hect domain of E6AP reveals a bilobal structure with a broad catalytic cleft at the junction of the two lobes. The cleft consists of conserved residues whose mutation interferes with ubiquitin-thioester bond formation and is the site of Angelman syndrome mutations. The crystal structure of the E6AP hect domain bound to the UbcH7 ubiquitin-conjugating enzyme (E2) reveals the determinants of E2-E3 specificity and provides insights into the transfer of ubiquitin from the E2 to the E3.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huang, L -- Kinnucan, E -- Wang, G -- Beaudenon, S -- Howley, P M -- Huibregtse, J M -- Pavletich, N P -- New York, N.Y. -- Science. 1999 Nov 12;286(5443):1321-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cellular Biochemistry and Biophysics Program, Howard Hughes Medical Institute, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10558980" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Angelman Syndrome/genetics ; Binding Sites ; Catalytic Domain ; Conserved Sequence ; Crystallography, X-Ray ; Cysteine/chemistry ; Humans ; Ligases/*chemistry/*metabolism ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Protein Conformation ; Protein Structure, Secondary ; Substrate Specificity ; Ubiquitin-Conjugating Enzymes ; Ubiquitin-Protein Ligases ; Ubiquitins/*metabolism
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    Specific lipopolysaccharide found in cystic fibrosis airway Pseudomonas aeruginosa (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-11-24
    Description: Cystic fibrosis (CF) patients develop chronic airway infections with Pseudomonas aeruginosa (PA). Pseudomonas aeruginosa synthesized lipopolysaccharide (LPS) with a variety of penta- and hexa-acylated lipid A structures under different environmental conditions. CF patient PA synthesized LPS with specific lipid A structures indicating unique recognition of the CF airway environment. CF-specific lipid A forms containing palmitate and aminoarabinose were associated with resistance to cationic antimicrobial peptides and increased inflammatory responses, indicating that they are likely to be involved in airway disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ernst, R K -- Yi, E C -- Guo, L -- Lim, K B -- Burns, J L -- Hackett, M -- Miller, S I -- R21 R13400/PHS HHS/ -- R55 HL 48888/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1999 Nov 19;286(5444):1561-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Washington, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10567263" target="_blank"〉PubMed〈/a〉
    Keywords: Acylation ; Arabinose/analogs & derivatives/analysis/metabolism ; Bacterial Proteins/genetics/physiology ; Cells, Cultured ; Cystic Fibrosis/complications/*microbiology ; Drug Resistance, Microbial ; Humans ; Infant ; Interleukin-8/biosynthesis ; Lipid A/*biosynthesis/*chemistry ; Lipopolysaccharides/chemistry/immunology ; Magnesium/pharmacology ; Mutation ; Palmitates/analysis/metabolism ; Peptides/pharmacology ; Polymyxins/pharmacology ; Pseudomonas Infections/*microbiology ; Pseudomonas aeruginosa/drug effects/genetics/*metabolism/pathogenicity ; Respiratory System/*microbiology ; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization ; Virulence
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 98
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    BRCA1 inhibition of estrogen receptor signaling in transfected cells (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-05-21
    Description: Mutations of the breast cancer susceptibility gene BRCA1 confer increased risk for breast, ovarian, and prostatic cancers, but it is not clear why the mutations are associated with these particular tumor types. In transient transfection assays, BRCA1 was found to inhibit signaling by the ligand-activated estrogen receptor (ER-alpha) through the estrogen-responsive enhancer element and to block the transcriptional activation function AF-2 of ER-alpha. These results raise the possibility that wild-type BRCA1 suppresses estrogen-dependent transcriptional pathways related to mammary epithelial cell proliferation and that loss of this ability contributes to tumorigenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fan, S -- Wang, J -- Yuan, R -- Ma, Y -- Meng, Q -- Erdos, M R -- Pestell, R G -- Yuan, F -- Auborn, K J -- Goldberg, I D -- Rosen, E M -- R01-CA75503/CA/NCI NIH HHS/ -- R01-ES09169/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1999 May 21;284(5418):1354-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Radiation Oncology, Long Island Jewish Medical Center, The Long Island Campus for the Albert Einstein College of Medicine, 270-05 76th Avenue, New Hyde Park, NY 11040, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10334989" target="_blank"〉PubMed〈/a〉
    Keywords: BRCA1 Protein/*physiology ; Breast/cytology ; Breast Neoplasms/etiology ; Cell Division ; Enhancer Elements, Genetic ; Epithelial Cells/cytology ; Estradiol/metabolism ; Estrogen Receptor alpha ; Female ; Genes, BRCA1 ; Genes, Reporter ; Humans ; Ligands ; Male ; Receptors, Estrogen/*metabolism ; *Signal Transduction ; Transcription Factors/metabolism ; *Transcriptional Activation ; Transfection ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 99
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    Effects of angiogenesis inhibitors on multistage carcinogenesis in mice (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-30
    Description: Solid tumors depend on angiogenesis for their growth. In a transgenic mouse model of pancreatic islet cell carcinogenesis (RIP1-Tag2), an angiogenic switch occurs in premalignant lesions, and angiogenesis persists during progression to expansive solid tumors and invasive carcinomas. RIP1-Tag2 mice were treated so as to compare the effects of four angiogenesis inhibitors at three distinct stages of disease progression. AGM-1470, angiostatin, BB-94, and endostatin each produced distinct efficacy profiles in trials aimed at preventing the angiogenic switch in premalignant lesions, intervening in the rapid expansion of small tumors, or inducing the regression of large end-stage cancers. Thus, anti-angiogenic drugs may prove most efficacious when they are targeted to specific stages of cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bergers, G -- Javaherian, K -- Lo, K M -- Folkman, J -- Hanahan, D -- New York, N.Y. -- Science. 1999 Apr 30;284(5415):808-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Biophysics and Hormone Research Institute, University of California, San Francisco, 513 Parnassus Ave, San Francisco, CA 94143-0534, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10221914" target="_blank"〉PubMed〈/a〉
    Keywords: Angiostatins ; Animals ; Anticarcinogenic Agents/pharmacology ; Antineoplastic Agents/*pharmacology ; Apoptosis ; Carcinoma, Islet Cell/blood supply/*drug therapy/pathology/prevention & control ; Collagen/pharmacology ; Cyclohexanes ; Disease Progression ; Drug Evaluation, Preclinical ; Endostatins ; Female ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Neoplasm Staging ; Neovascularization, Pathologic/*prevention & control ; Pancreatic Neoplasms/blood supply/*drug therapy/pathology/prevention & control ; Peptide Fragments/pharmacology ; Phenylalanine/analogs & derivatives/pharmacology ; Plasminogen/pharmacology ; Sesquiterpenes/pharmacology ; Thiophenes/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 100
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    Impaired immunoproteasome assembly and immune responses in PA28-/- mice (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-12-11
    Description: In vitro PA28 binds and activates proteasomes. It is shown here that mice with a disrupted PA28b gene lack PA28a and PA28b polypeptides, demonstrating that PA28 functions as a hetero-oligomer in vivo. Processing of antigenic epitopes derived from exogenous or endogenous antigens is altered in PA28-/- mice. Cytotoxic T lymphocyte responses are impaired, and assembly of immunoproteasomes is greatly inhibited in mice lacking PA28. These results show that PA28 is necessary for immunoproteasome assembly and is required for efficient antigen processing, thus demonstrating the importance of PA28-mediated proteasome function in immune responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Preckel, T -- Fung-Leung, W P -- Cai, Z -- Vitiello, A -- Salter-Cid, L -- Winqvist, O -- Wolfe, T G -- Von Herrath, M -- Angulo, A -- Ghazal, P -- Lee, J D -- Fourie, A M -- Wu, Y -- Pang, J -- Ngo, K -- Peterson, P A -- Fruh, K -- Yang, Y -- New York, N.Y. -- Science. 1999 Dec 10;286(5447):2162-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The R. W. Johnson Pharmaceutical Research Institute, 3210 Merryfield Row, San Diego, CA 92121, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10591649" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antigen Presentation ; Autoantigens ; Cysteine Endopeptidases/chemistry/*metabolism ; Enzyme Activators/*metabolism ; Epitopes, T-Lymphocyte/immunology ; Female ; H-Y Antigen/immunology ; Herpesviridae Infections/immunology ; Histocompatibility Antigens Class I/immunology/metabolism ; Interferons/pharmacology ; Lymphocytic Choriomeningitis/immunology ; Lymphocytic choriomeningitis virus/immunology ; Male ; Mice ; Multienzyme Complexes/chemistry/*metabolism ; Muromegalovirus/immunology ; Ovalbumin/immunology ; Peptide Fragments/immunology ; Proteasome Endopeptidase Complex ; Proteins/genetics/*metabolism ; T-Lymphocytes, Cytotoxic/*immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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