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  • 1
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    Adipsin and complement factor D activity: an immune-related defect in obesity (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-06-23
    Description: Adipsin is a serine protease that is secreted by adipocytes into the bloodstream; it is deficient in several animal models of obesity, representing a striking example of defective gene expression in this disorder. Recombinant mouse adipsin was purified and its biochemical and enzymatic properties were studied in order to elucidate the function of this protein. Activated adipsin has little or no proteolytic activity toward most substrates but has the same activity as human complement factor D, cleaving complement factor B when it is complexed with activated complement component C3. Like authentic factor D, adipsin can activate the alternative pathway of complement, resulting in red blood cell lysis. Decreased (58 to 80 percent) complement factor D activity, relative to lean controls, was observed as a common feature of several experimental models of obesity, including the ob/ob, db/db, and monosodium glutamate (MSG)-injected mouse and the fa/fa rat. These results suggest that adipsin and the alternative pathway of complement may play an unexpected but important role in the regulation of systemic energy balance in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rosen, B S -- Cook, K S -- Yaglom, J -- Groves, D L -- Volanakis, J E -- Damm, D -- White, T -- Spiegelman, B M -- DK31403/DK/NIDDK NIH HHS/ -- DK34605/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1989 Jun 23;244(4911):1483-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dana-Farber Cancer Institute, Boston, MA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2734615" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/metabolism ; Amino Acid Sequence ; Animals ; Cell Line ; Complement Activating Enzymes/*metabolism ; Complement Factor D/*metabolism ; Complement Pathway, Alternative ; Cricetinae ; DNA/genetics ; Gene Expression Regulation ; Humans ; Immunoblotting ; Mice ; Molecular Sequence Data ; Obesity/genetics/*immunology/metabolism ; RNA, Messenger/metabolism ; Recombinant Proteins ; Serine Endopeptidases/genetics/isolation & purification/*metabolism ; Substrate Specificity ; 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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  • 2
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    The molecular basis of muscular dystrophy in the mdx mouse: a point mutation (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-06-30
    Description: The mdx mouse is an X-linked myopathic mutant, an animal model for human Duchenne muscular dystrophy. In both mouse and man the mutations lie within the dystrophin gene, but the phenotypic differences of the disease in the two species confer much interest on the molecular basis of the mdx mutation. The complementary DNA for mouse dystrophin has been cloned, and the sequence has been used in the polymerase chain reaction to amplify normal and mdx dystrophin transcripts in the area of the mdx mutation. Sequence analysis of the amplification products showed that the mdx mouse has a single base substitution within an exon, which causes premature termination of the polypeptide chain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sicinski, P -- Geng, Y -- Ryder-Cook, A S -- Barnard, E A -- Darlison, M G -- Barnard, P J -- New York, N.Y. -- Science. 1989 Jun 30;244(4912):1578-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Unit, MRC Centre, Cambridge, United Kingdom.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2662404" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Chromosome Mapping ; Cloning, Molecular ; Codon ; DNA/genetics ; DNA Probes ; DNA-Directed DNA Polymerase ; Dystrophin ; Exons ; Gene Amplification ; Humans ; Mice ; Mice, Mutant Strains ; Molecular Sequence Data ; Muscle Proteins/*genetics ; Muscular Dystrophy, Animal/*genetics ; *Mutation ; Nucleic Acid Hybridization ; Phenotype
    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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  • 3
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    Three-dimensional structure of recombinant human interferon-gamma (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-03
    Description: The x-ray crystal structure of recombinant human interferon-gamma has been determined with the use of multiple-isomorphous-replacement techniques. Interferon-gamma, which is dimeric in solution, crystallizes with two dimers related by a noncrystallographic twofold axis in the asymmetric unit. The protein is primarily alpha helical, with six helices in each subunit that comprise approximately 62 percent of the structure; there is no beta sheet. The dimeric structure of human interferon-gamma is stabilized by the intertwining of helices across the subunit interface with multiple intersubunit interactions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ealick, S E -- Cook, W J -- Vijay-Kumar, S -- Carson, M -- Nagabhushan, T L -- Trotta, P P -- Bugg, C E -- CA-13148/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 May 3;252(5006):698-702.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, University of Alabama, Birmingham 35294.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1902591" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Crystallization ; Glycosylation ; Humans ; Interferon-gamma/*chemistry ; Macromolecular Substances ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Recombinant Proteins ; Sequence Homology, Nucleic Acid ; X-Ray Diffraction
    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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  • 4
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    Binding of the Wilms' tumor locus zinc finger protein to the EGR-1 consensus sequence (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-11-30
    Description: The Wilms' tumor locus (WTL) at 11p13 contains a gene that encodes a zinc finger-containing protein that has characteristics of a DNA-binding protein. However, binding of this protein to DNA in a sequence-specific manner has not been demonstrated. A synthetic gene was constructed that contained the zinc finger region, and the protein was expressed in Escherichia coli. The recombinant protein was used to identify a specific DNA binding site from a pool of degenerate oligonucleotides. The binding sites obtained were similar to the sequence recognized by the early growth response-1 (EGR-1) gene product, a zinc finger-containing protein that is induced by mitogenic stimuli. A mutation in the zinc finger region of the protein originally identified in a Wilms' tumor patient abolished its DNA-binding activity. These results suggest that the WTL protein may act at the DNA binding site of a growth factor-inducible gene and that loss of DNA-binding activity contributes to the tumorigenic process.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rauscher, F J 3rd -- Morris, J F -- Tournay, O E -- Cook, D M -- Curran, T -- CA0917-15/CA/NCI NIH HHS/ -- CA10817/CA/NCI NIH HHS/ -- CA23413/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1990 Nov 30;250(4985):1259-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wistar Institute, Philadelphia, PA 19104.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2244209" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Binding Sites ; Binding, Competitive ; Chromosomes, Human, Pair 11 ; Consensus Sequence ; DNA/genetics/*metabolism ; DNA-Binding Proteins/genetics/*metabolism ; Early Growth Response Protein 1 ; Escherichia coli/genetics ; *Genes, Wilms Tumor ; Humans ; *Immediate-Early Proteins ; Molecular Sequence Data ; Mutation ; Oligonucleotides/metabolism ; Polymerase Chain Reaction ; Recombinant Proteins/metabolism ; Restriction Mapping ; Transcription Factors/genetics/*metabolism ; *Zinc Fingers/genetics
    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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  • 5
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    Transcriptional repression mediated by the WT1 Wilms tumor gene product (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-07
    Description: The wt1 gene, a putative tumor suppressor gene located at the Wilms tumor (WT) locus on chromosome 11p13, encodes a zinc finger-containing protein that binds to the same DNA sequence as EGR-1, a mitogen-inducible immediate-early gene product that activates transcription. The transcriptional regulatory potential of WT1 has not been demonstrated. In transient transfection assays, the WT1 protein functioned as a repressor of transcription when bound to the EGR-1 site. The repression function was mapped to the glutamine- and proline-rich NH2-terminus of WT1; fusion of this domain to the zinc finger region of EGR-1 converted EGR-1 into a transcriptional repressor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Madden, S L -- Cook, D M -- Morris, J F -- Gashler, A -- Sukhatme, V P -- Rauscher, F J 3rd -- CA-0917-15/CA/NCI NIH HHS/ -- CA-23413/CA/NCI NIH HHS/ -- CA-52009/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1991 Sep 27;253(5027):1550-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wistar Institute of Anatomy and Biology, Philadelphia, PA 19104.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1654597" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Cell Line ; Chromosomes, Human, Pair 11 ; DNA/genetics ; DNA-Binding Proteins/*genetics ; Gene Expression Regulation ; *Genes, Tumor Suppressor ; Humans ; Kidney Neoplasms/*genetics ; Molecular Sequence Data ; Repressor Proteins/*genetics ; *Transcription, Genetic ; Wilms Tumor/*genetics ; Zinc Fingers/*genetics
    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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  • 6
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    Memory processing of serial lists by pigeons, monkeys, and people (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-07-19
    Description: List memory of pigeons, monkeys, and humans was tested with lists of four visual items (travel slides for animals and kaleidoscope patterns for humans). Retention interval increases for list-item memory revealed a consistent modification of the serial-position function shape: a monotonically increasing function at the shortest interval, a U-shaped function at intermediate intervals, and a monotonically decreasing function at the longest interval. The time course of these changes was fastest for pigeons, intermediate for monkeys, and slowest for humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wright, A A -- Santiago, H C -- Sands, S F -- Kendrick, D F -- Cook, R G -- New York, N.Y. -- Science. 1985 Jul 19;229(4710):287-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Sensory Sciences Center, Graduate School of Biomedical Sciences, University of Texas Health Science Center, Houston 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9304205" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Columbidae ; Female ; Humans ; Macaca mulatta ; Male ; Random Allocation ; *Retention (Psychology) ; Serial Learning
    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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  • 7
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    Sequence-specific packaging of DNA in human sperm chromatin (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-05-22
    Description: The DNA in human sperm chromatin is packaged into nucleoprotamine (approximately 85%) and nucleohistone (approximately 15%). Whether these two chromatin fractions are sequence-specific subsets of the spermatozoon genome is the question addressed in this report. Sequence-specific packaging would suggest distinct structural and functional roles for the nucleohistone and nucleoprotamine in late spermatogenesis or early development or both. After removal of histones with 0.65M NaCl, exposed DNA was cleaved with Bam HI restriction endonuclease and separated by centrifugation from insoluble nucleoprotamine. The DNA sequence distribution of nucleohistone DNA in the supernatant and nucleoprotamine DNA in the pellet was compared by cloning size-selected single-copy sequences and by using the derived clones as probes of nucleohistone DNA and nucleoprotamine DNA. Two clones derived from nucleohistone DNA preferentially hybridized to nucleohistone DNA, and two clones derived from nucleoprotamine DNA preferentially hybridized to nucleoprotamine DNA, which demonstrated the existence of sequence-specific nucleohistone and nucleoprotamine components within the human spermatozoon.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gatewood, J M -- Cook, G R -- Balhorn, R -- Bradbury, E M -- Schmid, C W -- GM-07377/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1987 May 22;236(4804):962-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3576213" target="_blank"〉PubMed〈/a〉
    Keywords: Chromatin/*physiology ; Cloning, Molecular ; DNA/*genetics/isolation & purification/metabolism ; Histones/isolation & purification ; Humans ; Male ; Nucleic Acid Hybridization ; Nucleoproteins/isolation & purification ; Spermatozoa/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 8
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    Molecular cloning of the chicken progesterone receptor (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-08-15
    Description: To define the functional domains of the progesterone receptor required for gene regulation, complementary DNA (cDNA) clones encoding the chicken progesterone receptor have been isolated from a chicken oviduct lambda gt11 cDNA expression library. Positive clones expressed antigenic determinants that cross-reacted with six monospecific antibodies derived from two independent sources. A 36-amino acid peptide sequence obtained by microsequencing of purified progesterone receptor was encoded by nucleotide sequences in the longest cDNA clone. Analysis of the amino acid sequence of the progesterone receptor deduced from the cDNA clones revealed a cysteine-rich region that was homologous to a region found in the estrogen and glucocorticoid receptors and to the avian erythroblastosis virus gag-erb-A fusion protein. Northern blot analysis with chicken progesterone receptor cDNA's indicated the existence of at least three messenger RNA species. These messages were found only in oviduct and could be induced by estrogens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Conneely, O M -- Sullivan, W P -- Toft, D O -- Birnbaumer, M -- Cook, R G -- Maxwell, B L -- Zarucki-Schulz, T -- Greene, G L -- Schrader, W T -- O'Malley, B W -- New York, N.Y. -- Science. 1986 Aug 15;233(4765):767-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2426779" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies, Monoclonal ; Base Sequence ; Chickens ; *Cloning, Molecular ; Cross Reactions ; DNA/*metabolism ; Epitopes/analysis ; Female ; *Genes ; Humans ; Nucleic Acid Hybridization ; Oviducts/metabolism ; RNA, Messenger/genetics ; Receptors, Progesterone/*genetics ; Species Specificity
    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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  • 9
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    A new role for DNA virus early proteins in viral carcinogenesis (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-01-04
    Description: The T antigen proteins encoded by DNA tumor virus early genes are involved in the transformation of normal cells to immortalized neoplastic cells that may or may not be tumorigenic in immunocompetent animals. Studies have been made of the tumorigenicity of DNA virus-transformed cells and the interactions of these cells in vivo and in vitro with immunologically nonspecific host effector cells such as natural killer cells and macrophages. The results imply that the T proteins determine the capacity of transformed cells to induce tumors by governing the level of susceptibility that transformed cells express to destruction by such host cellular defenses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewis, A M Jr -- Cook, J L -- CA 31732/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Jan 4;227(4682):15-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3843807" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Polyomavirus Transforming ; Antigens, Viral, Tumor/*metabolism ; Cell Line ; Cell Transformation, Neoplastic/immunology/*metabolism ; *Cell Transformation, Viral ; Cricetinae ; Cytotoxicity, Immunologic ; DNA Viruses/*metabolism ; Humans ; Immunity, Cellular ; Killer Cells, Natural/immunology ; Major Histocompatibility Complex ; Mesocricetus ; Mice ; Mice, Nude ; Neoplasm Transplantation ; Neoplasms, Experimental/immunology ; Rats ; 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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