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  • 1
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    Implications of new measurements of O-16 + p + C-12,13, N-14,15 for the abundances of C, N isotopes at the cosmic ray source (1985)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The fragmentation of a 225 MeV/n O-16 beam was investigated at the Bevalac. Preliminary cross sections for mass = 13, 14, 15 fragments are used to constrain the nuclear excitation functions employed in galactic propagation calculations. Comparison to cosmic ray isotonic data at low energies shows that in the cosmic ray source C-13/C approximately 2% and N-14/0=3-6%. No source abundance of N-15 is required with the current experimental results.
    Keywords: SPACE RADIATION
    Type: OG-4.3-2 , 19th Intern. Cosmic Ray Conf - Vol. 2; p 80-83; NASA-CP-2376-VOL-2
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Vascular permeability factor, an endothelial cell mitogen related to PDGF (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-12-08
    Description: Vascular permeability factor (VPF) is a 40-kilodalton disulfide-linked dimeric glycoprotein that is active in increasing blood vessel permeability, endothelial cell growth, and angiogenesis. These properties suggest that the expression of VPF by tumor cells could contribute to the increased neovascularization and vessel permeability that are associated with tumor vasculature. The cDNA sequence of VPF from human U937 cells was shown to code for a 189-amino acid polypeptide that is similar in structure to the B chain of platelet-derived growth factor (PDGF-B) and other PDGF-B-related proteins. The overall identity with PDGF-B is 18%. However, all eight of the cysteines in PDGF-B were found to be conserved in human VPF, an indication that the folding of the two proteins is probably similar. Clusters of basic amino acids in the COOH-terminal halves of human VPF and PDGF-B are also prevalent. Thus, VPF appears to be related to the PDGF/v-sis family of proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keck, P J -- Hauser, S D -- Krivi, G -- Sanzo, K -- Warren, T -- Feder, J -- Connolly, D T -- New York, N.Y. -- Science. 1989 Dec 8;246(4935):1309-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Culture and Biochemistry, Monsanto Company, St. Louis, MO 63167.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2479987" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Capillary Permeability/physiology ; Cell Division/physiology ; Cloning, Molecular ; Endothelium, Vascular/*cytology ; *Growth Substances ; Guinea Pigs ; Humans ; Lymphokines/*physiology ; Molecular Sequence Data ; Neovascularization, Pathologic/physiopathology ; Oncogene Proteins v-sis ; Platelet-Derived Growth Factor/physiology ; Retroviridae Proteins, Oncogenic/physiology ; Sequence Homology, Nucleic Acid ; Transforming Growth Factors ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factors
    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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  • 3
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    Myristoylated and nonmyristoylated forms of a protein are phosphorylated by protein kinase C (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-10-27
    Description: Activation of protein kinase C is thought to require association of the kinase with the cell membrane. It has been assumed that cellular substrates for the kinase must likewise be associated with membranes, and previous studies with membrane-associated myristoylated proteins have supported this view. It is now shown that a mutation that prevents the normal amino-terminal myristoylation of a prominent cellular substrate of protein kinase C, and appears to prevent its membrane association, does not prevent the normal phosphorylation of this protein in intact cells in response to phorbol esters. Thus, membrane association may not be required in order for protein kinase C substrates to undergo phosphorylation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Graff, J M -- Gordon, J I -- Blackshear, P J -- 2T32-GM 07171/GM/NIGMS NIH HHS/ -- AI27179/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1989 Oct 27;246(4929):503-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute Laboratories, Durham, NC 27710.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2814478" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cells, Cultured ; Chickens ; Enzyme Activation ; *Intracellular Signaling Peptides and Proteins ; Membrane Proteins/metabolism ; Mutation ; Myristic Acid ; Myristic Acids ; Phosphorylation ; Protein Kinase C/*metabolism ; Proteins/*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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  • 4
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    Transcriptional regulation in mammalian cells by sequence-specific DNA binding proteins (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-07-28
    Description: The cloning of genes encoding mammalian DNA binding transcription factors for RNA polymerase II has provided the opportunity to analyze the structure and function of these proteins. This review summarizes recent studies that define structural domains for DNA binding and transcriptional activation functions in sequence-specific transcription factors. The mechanisms by which these factors may activate transcriptional initiation and by which they may be regulated to achieve differential gene expression are also discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mitchell, P J -- Tjian, R -- New York, N.Y. -- Science. 1989 Jul 28;245(4916):371-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Biochemistry, University of California, Berkeley 94720.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2667136" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Binding Sites ; Cloning, Molecular ; DNA-Binding Proteins/*genetics/metabolism ; Gene Expression Regulation ; Molecular Sequence Data ; Protein Processing, Post-Translational ; RNA Polymerase II/*genetics/metabolism ; Repetitive Sequences, Nucleic Acid ; Transcription Factors/*genetics/metabolism ; *Transcription, Genetic
    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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    Evolution of urea synthesis in vertebrates: the piscine connection (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-01-06
    Description: Elasmobranch fishes, the coelacanth, estivating lungfish, amphibians, and mammals synthesize urea by the ornithine-urea cycle; by comparison, urea synthetic activity is generally insignificant in teleostean fishes. It is reported here that isolated liver cells of two teleost toadfishes, Opsanus beta and Opsansus tau, synthesize urea by the ornithine-urea cycle at substantial rates. Because toadfish excrete ammonia, do not use urea as an osmolyte, and have substantial levels of urease in their digestive systems, urea may serve as a transient nitrogen store, forming the basis of a nitrogen conservation shuttle system between liver and gut as in ruminants and hibernators. Toadfish synthesize urea using enzymes and subcellular distributions similar to those of elasmobranchs: glutamine-dependent carbamoyl phosphate synthethase (CPS III) and mitochondrial arginase. In contrast, mammals have CPS I (ammonia-dependent) and cytosolic arginase. Data on CPS and arginases in other fishes, including lungfishes and the coelacanth, support the hypothesis that the ornithine-urea cycle, a monophyletic trait in the vertebrates, underwent two key changes before the evolution of the extant lungfishes: a switch from CPS III to CPS I and replacement of mitochondrial arginase by a cytosolic equivalent.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mommsen, T P -- Walsh, P J -- New York, N.Y. -- Science. 1989 Jan 6;243(4887):72-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology and Living Resources, Rosenstiel School of Marine and Atmospheric Sciences, University of Miami, FL 33149.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2563172" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arginase/metabolism ; *Biological Evolution ; Carbamoyl-Phosphate Synthase (Ammonia)/metabolism ; Carbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing)/metabolism ; Fishes/*metabolism ; Glutamate-Ammonia Ligase/metabolism ; Liver/metabolism ; Species Specificity ; Urea/*biosynthesis ; Vertebrates/*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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  • 6
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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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  • 7
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    Limbic seizures increase neuronal production of messenger RNA for nerve growth factor (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-08-18
    Description: Nerve growth factor (NGF) produced by telencephalic neurons provides critical trophic support for cholinergic neurons of the basal forebrain. In situ hybridization and nuclease protection analyses demonstrate that limbic seizures dramatically increase the amount of messenger RNA for NGF in the neurons of the hippocampal dentate gyrus within 1 hour of seizure onset and in broadly distributed neocortical and olfactory forebrain neurons some hours later. The increased messenger RNA species is indistinguishable from messenger RNA for transcript B of the beta subunit of NGF from mouse submandibular gland. Thus, the expression of a known growth factor is affected by unusual physiological activity, suggesting one route through which trophic interactions between neurons in adult brain can be modified.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gall, C M -- Isackson, P J -- NS00915/NS/NINDS NIH HHS/ -- NS24747/NS/NINDS NIH HHS/ -- NS26748/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1989 Aug 18;245(4919):758-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy and Neurobiology, University of California, Irvine 92717.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2549634" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoradiography ; Endonucleases ; Gene Expression Regulation ; Guinea Pigs ; Hippocampus/physiopathology ; Limbic System/*physiopathology ; Mice ; Nerve Growth Factors/*genetics ; Neurons/*metabolism ; Nucleic Acid Hybridization ; RNA Probes ; RNA, Messenger/*biosynthesis ; Rats ; Seizures/*metabolism ; Single-Strand Specific DNA and RNA Endonucleases ; Telencephalon/metabolism ; Tissue Distribution
    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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  • 8
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    Model of Huntington's disease (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-07-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davies, S W -- Roberts, P J -- New York, N.Y. -- Science. 1988 Jul 22;241(4864):474-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy and Developmental Biology, University College London, United Kingdom.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2969147" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Disease Models, Animal ; Huntington Disease/*physiopathology ; Quinolinic Acid ; Quinolinic Acids/toxicity
    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 HTLV-III/LAV encoded antigen detected by antibodies from AIDS patients (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-11-15
    Description: A newly identified protein from HTLV-III/LAV, the virus implicated as the etiologic agent of the acquired immune deficiency syndrome, was studied. This protein, which has a molecular weight of 27,000 (p27), was shown by amino acid sequencing to have a coding origin 3' to the env gene on the HTLV-III genome. The presence of antibodies to p27 in virus-exposed individuals indicated that this gene is functional in the natural host.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Allan, J S -- Coligan, J E -- Lee, T H -- McLane, M F -- Kanki, P J -- Groopman, J E -- Essex, M -- 2T32-CA09031/CA/NCI NIH HHS/ -- CA23885/CA/NCI NIH HHS/ -- CA37466/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Nov 15;230(4727):810-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2997921" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*immunology/microbiology ; Amino Acid Sequence ; Animals ; Antibodies, Viral/*immunology ; Antibody Formation ; Antigens, Viral/*immunology ; Deltaretrovirus/genetics/*immunology ; Electrophoresis, Polyacrylamide Gel ; Haplorhini/microbiology ; Humans ; Male ; Molecular Weight ; Repetitive Sequences, Nucleic Acid
    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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  • 10
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    Ethanol withdrawal in mice precipitated and exacerbated by hyperbaric exposure (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-08-23
    Description: Mice were fed an ethanol-containing liquid diet for 9 days. On removal of the diet, exposure to 12 atmospheres absolute of a mixture of helium and oxygen precipitated earlier withdrawal, increased withdrawal scores for the first 6 hours, and increased the peak withdrawal intensity compared to dependent animals exposed to control conditions. The enhanced withdrawal did not appear to reflect alterations in ethanol elimination, oxygen or helium partial pressures, body temperature, or general excitability. These results extend to chronically treated animals the evidence that hyperbaric exposure antagonizes the membrane actions of ethanol.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alkana, R L -- Finn, D A -- Galleisky, G G -- Syapin, P J -- Malcolm, R D -- R01AA03972/AA/NIAAA NIH HHS/ -- New York, N.Y. -- Science. 1985 Aug 23;229(4715):772-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4040651" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Atmospheric Pressure ; Cell Membrane/drug effects/physiology ; Ethanol/*adverse effects/pharmacology ; Humans ; Male ; Mice ; Substance Withdrawal Syndrome/*physiopathology
    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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