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  • Base Sequence  (179)
  • Rats, Inbred Strains  (103)
  • Amino Acid Sequence  (93)
  • American Association for the Advancement of Science (AAAS)  (336)
  • Annual Reviews
  • Nature Publishing Group
  • 1980-1984  (336)
  • 1960-1964
  • 1955-1959
  • 1930-1934
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (336)
  • Annual Reviews
  • Nature Publishing Group
Years
Year
  • 1
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-09-12
    Description: In the report by T. Kakunaga and J. D. Crow (25 July, p. 505), Fig. 1 on page 506 should have been printed as follows: [See figure in the PDF file]〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dayhoff, M O -- Schwartz, R M -- Chen, H R -- Hunt, L T -- Barker, W C -- Orcutt, B C -- New York, N.Y. -- Science. 1980 Sep 12;209(4462):1182.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7403878" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *Information Systems ; *Nucleic Acids
    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
    Publication Date: 1980-11-07
    Description: An analog of luteinizing hormone-releasing hormone containing a gamma-lactam as a conformational constraint has been prepared with the use of a novel cyclization of a methionine sulfonium salt. The analog is more active as a luteinizing hormone-releasing hormone agonist that the parent hormone, and provides evidence for a bioactive conformation containing a beta-turn.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freidinger, R M -- Veber, D F -- Perlow, D S -- Brooks, J R -- Saperstein, R -- New York, N.Y. -- Science. 1980 Nov 7;210(4470):656-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7001627" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Biological Assay ; Cells, Cultured ; Female ; *Gonadotropin-Releasing Hormone/analogs & derivatives ; Hydrogen Bonding ; Lactams ; Protein Conformation ; Rats ; Structure-Activity Relationship
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  • 3
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-03-21
    Description: Intensive research in the last decade has revealed a wealth of detail on the mechanism of biosynthesis, molecular structure, and covalent cross-linking of collagen. Tissues of higher animals express a family of at least five genetically distinct types of collagen molecule, each apparently tailored for different construction work outside the cell. Within each genetic type of collagen, further chemical heterogeneity is also evident; the variations in hydroxylation, glycosylation, and cross-linking are dependent, for example, on tissue type, age, and hormonal status. The functional significance of collagen's molecular diversity and its control by different cells and tissues are not yet well understood but abnormalities of collagen in many human diseases keep this protein a focal molecule of medical research.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eyre, D R -- New York, N.Y. -- Science. 1980 Mar 21;207(4437):1315-22.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7355290" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcification, Physiologic ; Cartilage/ultrastructure ; *Collagen/genetics/metabolism ; Epithelium/ultrastructure ; Extracellular Space/ultrastructure ; Humans ; Hydrogen Bonding ; Polymorphism, Genetic ; Protein Biosynthesis ; Protein Conformation ; Vertebrates
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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-02-08
    Description: The distribution of active polyadenylate-messenger RNA sequences in fractionated chicken liver chromatin was examined. A portion of these active gene sequences is concentrated in a DNA fraction retained by tightly bound nonhistone chromosomal proteins, while the nonretained DNA fraction is substantially depleted of a portion of these sequences. These findings suggest that the tightly bound nonhistones are physically associated with a subset of active gene sequences.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gates, D M -- Bekhor, I -- New York, N.Y. -- Science. 1980 Feb 8;207(4431):661-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7352280" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chickens ; Chromatin/ultrastructure ; Chromosomal Proteins, Non-Histone/*metabolism ; DNA/*metabolism ; *Genes ; Liver/*metabolism ; Nucleic Acid Hybridization ; Protein Binding ; RNA, Messenger/genetics ; Sodium Chloride
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  • 5
    Publication Date: 1980-07-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fox, G E -- Stackebrandt, E -- Hespell, R B -- Gibson, J -- Maniloff, J -- Dyer, T A -- Wolfe, R S -- Balch, W E -- Tanner, R S -- Magrum, L J -- Zablen, L B -- Blakemore, R -- Gupta, R -- Bonen, L -- Lewis, B J -- Stahl, D A -- Luehrsen, K R -- Chen, K N -- Woese, C R -- New York, N.Y. -- Science. 1980 Jul 25;209(4455):457-63.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6771870" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria/*classification ; Base Sequence ; Biological Evolution ; Chloroplasts/analysis ; Clostridium/classification ; Cyanobacteria/classification ; DNA/analysis ; *Phylogeny ; RNA, Ribosomal/*analysis ; Species Specificity
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  • 6
    Publication Date: 1980-12-19
    Description: Anglerfish (Lophius americanus) insulin complementary DNA was cloned in bacterial plasmids, and its sequence was determined. Fish insulin messenger RNA is larger (1.5 times) than the messenger RNA encoding mammalian (rat and human) insulin, in part because of a larger C peptide (an additional six amino acids or 18 nucleotides in length) but mainly because of increases in the 5' and 3' untranslated regions. Comparison of the fish, rat, and human insulin messenger RNA (from the complementary DNA) reveals that, in addition to the regions coding for the A and B peptides, sequence conservation is limited to a segment within the 5' untranslated region which may be involved in ribosomal binding, two small segments of the signal peptide, and two stretches of sequence in the 3' untranslated region.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hobart, P M -- Shen, L P -- Crawford, R -- Pictet, R L -- Rutter, W J -- AM 21344/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1980 Dec 19;210(4476):1360-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7001633" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Biological Evolution ; Cloning, Molecular ; Codon ; Fishes/*genetics ; Insulin/*genetics ; Nucleic Acid Conformation ; Proinsulin/genetics ; Protein Biosynthesis ; Protein Precursors/genetics ; RNA, Messenger/*genetics
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  • 7
    Publication Date: 1980-04-11
    Description: A high-molecular-weight protein with beta-endorphin- and adrenocorticotropin-immunoreactivities was isolated from extracts of human placenta after several purification steps, including immunoadsorption with a well-characterized antiserum raised to beta-endorphin. This protein was identified as the heavy chain of the human immunoglobulin class IgG1. These results have led to the recognition of homologies in the amino acid sequences of these physiologically unrelated molecules. They also suggest caution in accepting immunological competence as the sole criterion of the chemical identity of a ligand.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Julliard, J H -- Shibasaki, T -- Ling, N -- Guillemin, R -- New York, N.Y. -- Science. 1980 Apr 11;208(4440):183-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6244620" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Electrophoresis, Polyacrylamide Gel ; Endorphins/*analysis ; Female ; Humans ; Immunoglobulin G/*analysis ; Placental Extracts/*analysis ; Pregnancy ; Radioimmunoassay ; beta-Endorphin
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  • 8
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-11-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G B -- New York, N.Y. -- Science. 1980 Nov 21;210(4472):887-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7001629" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Chemistry/history ; DNA/genetics ; DNA, Recombinant ; History, 20th Century ; Molecular Biology/*history ; *Nobel Prize
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  • 9
    Publication Date: 1980-05-30
    Description: Cloned repetitive DNA sequences were used to determine the number of homologous RNA transcripts in the eggs of two sea urchin species, Strongylocentrotus purpuratus and S. franciscanus. The eggs of these species contain different amounts of RNA, and their genomes contain different numbers of copies of the cloned repeats. The specific pattern of repetitive sequence representation in the two egg RNA's is nonetheless quantitatively similar. The evolutionary conservation of this pattern suggests the functional importance of repeat sequence expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moore, G P -- Costantini, F D -- Posakony, J W -- Davidson, E H -- Britten, R J -- New York, N.Y. -- Science. 1980 May 30;208(4447):1046-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6154974" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Biological Evolution ; DNA, Recombinant ; Female ; Nucleic Acid Hybridization ; Ovum/physiology ; Plasmids ; RNA/*genetics ; Sea Urchins/*genetics ; Species Specificity ; Transcription, Genetic
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  • 10
    Publication Date: 1980-08-22
    Description: A 27-kilodalton tryptic fragment, derived from the amino terminus of the 200-kilodalton fibronectin subunit, inhibited binding of intact fibronectin to Staphylococcus aureus and could be cross-linked to Staphylococcus aureus by blood coagulation Factor XIIIa. Interactions of fibronectin with Staphylococcus aureus via this fragment may be important for bacterial opsonization and attachment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mosher, D F -- Proctor, R A -- New York, N.Y. -- Science. 1980 Aug 22;209(4459):927-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7403857" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Factor XIII/*metabolism ; Fibronectins/*metabolism ; Humans ; Molecular Weight ; Opsonin Proteins ; Peptide Fragments ; Protein Binding ; Staphylococcus aureus/immunology/*metabolism ; Trypsin/metabolism
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  • 11
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-09-05
    Description: A 15,8-kilobase pair fragment of BALB/c mouse liver DNA, cloned in the Charon 4A lambda phage vector system, was shown to contain the mu heavy chain constant region (CHmu) gene for the mouse immunoglobulin M. In addition, this fragment of DNA contains at least two J genes, used to code for the carboxyl terminal portion of heavy chain variable regions. These genes are located in genomic DNA about eight kilobase pairs to the 5' side of the CHmu gene. The complete nucleotide sequence of a 1120-base pair stretch of DNA that includes the two J genes has been determined.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Newell, N -- Richards, J E -- Tucker, P W -- Blattner, F R -- New York, N.Y. -- Science. 1980 Sep 5;209(4461):1128-32.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6250219" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Binding Sites, Antibody/*genetics ; DNA Restriction Enzymes ; DNA, Recombinant ; Genes ; Genetic Linkage ; Immunoglobulin Heavy Chains/*genetics ; Immunoglobulin Variable Region/*genetics ; Immunoglobulin mu-Chains/*genetics ; Mice
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  • 12
    Publication Date: 1980-03-14
    Description: A 15.0-kilobase (kb) Eco RI DNA fragment from normal mouse Balb/c genomic DNA that contains sequences (sarc) homologous to the acquired cell sequences (src) of Moloney sarcoma virus (MSV) has been cloned in phage lambda. The sarc region (1.2 to 1.3 kb) of the 15.0-kb cell fragment is indistinguishable from the src region of two isolates of MSV as judged by heteroduplex and restriction endonuclease analyses. The cellular sequences flanking sarc show no homology to other MSV sequences. Whereas cloned subgenomic portions of MSV that contain src transformed NIH-3T3 cells in vitro, the cloned sarc fragment is inactive.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oskarsson, M -- McClements, W L -- Blair, D G -- Maizel, J V -- Vande Woude, G F -- New York, N.Y. -- Science. 1980 Mar 14;207(4436):1222-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6243788" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chromosome Mapping ; DNA Restriction Enzymes ; *Genes ; *Genes, Viral ; Mice ; Mice, Inbred BALB C/*genetics ; Moloney murine leukemia virus/*genetics ; Nucleic Acid Hybridization
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  • 13
    Publication Date: 1980-07-11
    Description: The human genes for growth hormone (GH), chorionic somatomammotropin (CSH), and a third growth hormone-like gene (GHL) have been located on chromosome 17 in humans. DNA fragments of 2.6, 2.8, and 9.5 kilobase pairs containing GH, CSH, and GHL, respectively, were identified in human genomic DNA, and a 7.5-kilobase DNA fragment related to growth hormone DNA sequences was found in mouse cells. In somatic hybrids of human and mouse cells containing reduced numbers of human chromosomes, but a normal complement of mouse chromosomes, the mouse, 7.5-kolobase DNA fragment was always present, whereas the 2.6-, 2.8-, and 9.5-kilobase human fragments were present only when human chromosome 17 was also present.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Owerbach, D -- Rutter, W J -- Martial, J A -- Baxter, J D -- Shows, T B -- New York, N.Y. -- Science. 1980 Jul 11;209(4453):289-92.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7384802" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; *Chromosomes, Human, 16-18 ; *DNA/metabolism ; *Genes ; Growth Hormone/*biosynthesis ; Humans ; Hybrid Cells/metabolism ; Mice ; Placental Lactogen/*biosynthesis ; Translocation, Genetic
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  • 14
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-09-19
    Description: Two unstable mutations at the his4 locus of yeast are due to the insertion of the transposable elements Ty912 and Ty917 into the his4 regulatory region. The two transposons are related, one being derived from the other by a substitution of 4000 base pairs of DNA. Element Ty912 includes identical terminal repeats, whereas the terminal repeats of Ty917 are not identical. Transposition of Ty912 or Ty917 generates 5-base-pair duplications of the target DNA at either end of the element. Expression and reversion of a his4 gene containing Ty912 or Ty917 is controlled by three unlinked regulatory genes. The properties of these regulatory genes are similar to those described for the controlling elements in maize.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roeder, G S -- Farabaugh, P J -- Chaleff, D T -- Fink, G R -- CA23441/CA/NCI NIH HHS/ -- GM07617/GM/NIGMS NIH HHS/ -- GM15408/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1980 Sep 19;209(4463):1375-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6251544" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Base Sequence ; Cloning, Molecular/methods ; *DNA Transposable Elements ; DNA, Fungal/genetics ; Genes, Regulator ; Genetic Linkage ; Histidine/*genetics ; Saccharomyces cerevisiae/*genetics ; Suppression, Genetic
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  • 15
    Publication Date: 1980-09-19
    Description: Many eukaryotic genes contain intevening sequences, segments of DNA that interrupt the continuity of the gene. They are removed from RNA transcripts of the gene by a process known as splicing. The intervening sequence in a yeast tyrosine transfer RNA (tRNA Tyr) suppressor gene was deleted in order to test its role in the expression of the gene. The altered gene and its parent were introduced into yeast by transformation. Both genes exhibited suppressor function, showing that the intervening sequence is not absolutely essential for the expression of this gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wallace, R B -- Johnson, P F -- Tanaka, S -- Schold, M -- Itakura, K -- Abelson, J -- CA10984/CA/NCI NIH HHS/ -- GM 26391/GM/NIGMS NIH HHS/ -- GM 35658/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1980 Sep 19;209(4463):1396-400.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6997991" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Chromosome Deletion ; DNA, Recombinant ; Genes ; Mutation ; Nucleic Acid Precursors/genetics ; Plasmids ; RNA, Fungal/*genetics ; RNA, Transfer/*genetics ; Saccharomyces cerevisiae/genetics ; Suppression, Genetic ; Tyrosine
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  • 16
    Publication Date: 1981-11-06
    Description: The effects of long- and short-term administration of the tricyclic antidepressant desipramine on intracranial self-stimulation in rats were studied with electrodes in the A10 region of the dopamine-containing cell bodies of the ventromedial tegmentum. Long-term desipramine administration resulted in a significant shift to the left in the ascending portion of the rate--current intensity function, indicating that the activity of the mesolimbic dopamine system was enhanced. These findings point to a possible dopaminergic mechanism of action of antidepressants and support speculations concerning the role of dopamine-containing neurons in the pathophysiology of depression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fibiger, H C -- Phillips, A G -- New York, N.Y. -- Science. 1981 Nov 6;214(4521):683-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7197394" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Depression/physiopathology ; Desipramine/*administration & dosage ; Dopamine/*physiology ; Humans ; Limbic System/*physiology ; Male ; Rats ; Rats, Inbred Strains ; Self Stimulation/*drug effects ; Time Factors
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  • 17
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-11-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G B -- New York, N.Y. -- Science. 1981 Nov 13;214(4522):775-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7292010" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chromatin/*ultrastructure ; Deoxyribonucleases/metabolism ; *Gene Expression Regulation ; Humans ; Nucleic Acid Conformation
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  • 18
    Publication Date: 1981-12-04
    Description: A DNA sequence coding for the immunogenic capsid protein VP3 of foot-and-mouth disease virus A12, prepared from the virion RNA, was ligated to a plasmid designed to express a chimeric protein from the Escherichia coli tryptophan promoter-operator system. When Escherichia coli transformed with this plasmid was grown in tryptophan-depleted media, approximately 17 percent of the total cellular protein was found to be an insoluble and stable chimeric protein. The purified chimeric protein competed equally on a molar basis with VP3 for specific antibodies to foot-and-mouth disease virus. When inoculated into six cattle and two swine, this protein elicited high levels of neutralizing antibody and protection against challenge with foot-and-mouth disease virus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kleid, D G -- Yansura, D -- Small, B -- Dowbenko, D -- Moore, D M -- Grubman, M J -- McKercher, P D -- Morgan, D O -- Robertson, B H -- Bachrach, H L -- New York, N.Y. -- Science. 1981 Dec 4;214(4525):1125-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6272395" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibody Formation ; Base Sequence ; Cattle ; Cattle Diseases/*prevention & control ; *Cloning, Molecular ; DNA Restriction Enzymes ; DNA, Recombinant/metabolism ; Foot-and-Mouth Disease/*prevention & control ; Immunity, Cellular ; Protein Biosynthesis ; Swine ; Swine Diseases/*prevention & control ; Transcription, Genetic ; *Vaccines ; Viral Proteins/genetics/*therapeutic use
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  • 19
    Publication Date: 1981-10-30
    Description: In male Wistar rats subjected to dietary restriction by alternate days of feeding and fasting the normal age-associated loss of striatal dopamine receptors in the brain was substantially retarded. The mean survival time of the rats on the restricted diet was increased by approximately 40 percent compared to control rats given free access to food. Dopamine receptor concentrations in striata of 24-month-old rats that had been on a restricted diet since weaning were 50 percent higher than those of control animals of the same age, and essentially comparable to 3- and 6-month-old control rats.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levin, P -- Janda, J K -- Joseph, J A -- Ingram, D K -- Roth, G S -- New York, N.Y. -- Science. 1981 Oct 30;214(4520):561-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7291993" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; Corpus Striatum/*metabolism ; *Diet ; Fasting ; Rats ; Rats, Inbred Strains ; Receptors, Dopamine/*metabolism
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  • 20
    Publication Date: 1981-10-16
    Description: Field potentials and extracellular potassium concentration ([K+]o) were simultaneously monitored in the molecular layer of the rat cerebellar cortex during stimulation of the parallel fibers. The synaptic field potential elicited by stimulation was reduced by several methods. Reduction of synaptic field potentials was accompanied by a marked increase in the excitability of the parallel fibers. This change in excitability was related to the degree of extracellular K+ accumulation associated with parallel fiber stimulation. These findings support the proposal that increases in [K+]o associated with activity in postsynaptic elements can modulate the excitability of presynaptic afferent fibers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Malenka, R C -- Kocsis, J D -- Ransom, B R -- Waxman, S G -- NS 15589/NS/NINDS NIH HHS/ -- NS-00473/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Oct 16;214(4518):339-41.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7280695" target="_blank"〉PubMed〈/a〉
    Keywords: Afferent Pathways/*physiology ; Animals ; Calcium/physiology ; Cerebellar Cortex/*physiology ; Evoked Potentials ; Extracellular Space/physiology ; Male ; Manganese/pharmacology ; Membrane Potentials ; Potassium/*physiology ; Rats ; Rats, Inbred Strains ; Synapses/*physiology
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  • 21
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-08-21
    Description: Studies of the length of DNA fragments produced upon decay of iodine-125-labeled deoxycytidine that was located at a single position within a DNA fragment of defined sequence demonstrate that most radiochemical damage occurs within 15 to 20 angstroms of the site of iodine-125 decay. However, DNA strand breakage was detectable up to 70 angstroms from the site of iodine-125 decay.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martin, R F -- Haseltine, W A -- CA 19589/CA/NCI NIH HHS/ -- CA 25118/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Aug 21;213(4510):896-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7256283" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA/*radiation effects ; Hydrolysis ; *Iodine Radioisotopes
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  • 22
    Publication Date: 1981-07-24
    Description: Recombinant DNA techniques were used to analyze the structure of the messenger RNA encoding a precursor of calcitonin, a small calcium-regulating hormone of 32 amino acids. Analyses of the nucleotide sequences of cloned complementary DNA's comprising the entire coding sequence of the messenger RNA revealed that calcitonin is flanked at both its amino and carboxyl termini by peptide extensions linked to the hormone by short sequences of basic amino acids. The location of glycine next to the carboxyl terminal prolinamide of calcitonin is consistent with indications that glycine is required for the enzymatic amidation of proline to the prolinamide. During cellular biosynthesis, calcitonin arises from a large precursor protein by cleavages at both amino and carboxyl terminal residues of the hormone. These findings raise questions concerning the regulation of these cleavages and the potential biological functions of the precursor extensions derived from these cleavages.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jacobs, J W -- Goodman, R H -- Chin, W W -- Dee, P C -- Habener, J F -- Bell, N H -- Potts, J T Jr -- AM 27781-01/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 24;213(4506):457-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264603" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Calcitonin/*genetics ; Cloning, Molecular ; DNA Restriction Enzymes ; DNA, Recombinant/*metabolism ; Macromolecular Substances ; Neoplasms, Experimental/metabolism ; Nucleic Acid Hybridization ; Peptide Biosynthesis ; Plants/metabolism ; Protein Biosynthesis ; RNA, Messenger/*genetics ; Rats ; Thyroid Neoplasms/metabolism ; Triticum/metabolism
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  • 23
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-05-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1981 May 29;212(4498):1015-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6785883" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/*genetics ; Base Sequence ; *Genes ; Humans ; Immunoglobulin Heavy Chains/genetics ; Immunoglobulin Light Chains/genetics ; Immunoglobulins/*genetics ; Transcription, Genetic
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  • 24
    Publication Date: 1981-11-06
    Description: A single application of electroconvulsive shock produced a rapid but short-lasting increase in tyrosine hydroxylase activity above control values in the rat adrenal medulla and striatum. After repeated electroconvulsive shock treatment (once per day for 7 days), tyrosine hydroxylase activity increased significantly in the locus ceruleus, nucleus of the tractus solitarius, hippocampus, cerebellum, and frontal cortex and remained elevated for 4 to 8 days. Adrenal tyrosine hydroxylase activity increased 1 day after the termination of repeated electroconvulsive shock treatments and remained elevated for at least 24 days, possibly reflecting the establishment of a new and higher steady-state level of catecholamine biosynthesis in the adrenal. These findings suggest that the persistent changes in tyrosine hydroxylase activity produced by repeated electroconvulsive shock may be a factor contributing to the long-lasting antidepressant effects of this treatment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Masserano, J M -- Takimoto, G S -- Weiner, N -- NS 07927/NS/NINDS NIH HHS/ -- NS 09199/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Nov 6;214(4521):662-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6117127" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Glands/*enzymology ; Animals ; Brain/*enzymology ; Corpus Striatum/enzymology ; *Electroshock ; Enzyme Induction ; Locus Coeruleus/enzymology ; Male ; Rats ; Rats, Inbred Strains ; Time Factors ; Tyrosine 3-Monooxygenase/*metabolism
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  • 25
    Publication Date: 1981-10-23
    Description: The complete nucleotide sequence of a mammalian transforming retrovirus. Moloney murine sarcoma virus, has been determined. MSV, recombinant virus derived of helper viral and cellular sequences, possesses termini resembling prokaryotic transposable elements. The viral genome has the coding capacity for the Moloney murine leukemia virus gag gene product and contains large deletions in pol and env genes. A large open reading frame encompassing its cell-derived sequences codes for its putative transforming protein. The nature of some of the important domains in the viral genome has been established, and their structure is discussed in relation to their function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reddy, E P -- Smith, M J -- Aaronson, S A -- New York, N.Y. -- Science. 1981 Oct 23;214(4519):445-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6170110" target="_blank"〉PubMed〈/a〉
    Keywords: Antigens, Viral/genetics ; Base Sequence ; Binding Sites ; Cell Transformation, Viral ; DNA, Viral/*genetics ; Defective Viruses/genetics ; Gene Products, gag ; *Genes, Viral ; Moloney murine leukemia virus/*genetics ; RNA, Transfer/genetics ; RNA-Directed DNA Polymerase/genetics ; Repetitive Sequences, Nucleic Acid ; Sarcoma Viruses, Murine/*genetics ; Transcription, Genetic ; Viral Proteins/genetics
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  • 26
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-12-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sanger, F -- New York, N.Y. -- Science. 1981 Dec 11;214(4526):1205-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7302589" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Bacteriophages/genetics ; *Base Sequence ; Cloning, Molecular ; DNA/*genetics ; DNA, Mitochondrial/genetics ; DNA, Single-Stranded/genetics ; DNA-Directed DNA Polymerase ; Humans ; Protein Biosynthesis ; Templates, Genetic
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  • 27
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-04-17
    Description: Vitellogenin is synthesized under estrogen control in the liver, extensively modified, transported to the ovary, and there processed to the yolk proteins lipovitellin and phosvitin. In the frog Xenopus laevis there are at least four distinct but related vitellogenin genes. The two genes A1 and A2 have a 95 percent sequence homology in their messenger RNA coding regions, and contain 33 introns that interrupt the coding region (exons) at homologous positions. Sequences and lengths of analogous introns differ, and many introns contain repetitive DNA elements. The introns in these two genes that have apparently arisen by duplication have diverged extensively by events that include deletions, insertions, and probably duplications. Rapid evolutionary change involving rearrangements and the presence of repeated DNA suggests that the bulk of the sequences within introns may not have any specific function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wahli, W -- Dawid, I B -- Ryffel, G U -- Weber, R -- New York, N.Y. -- Science. 1981 Apr 17;212(4492):298-304.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209528" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cloning, Molecular ; DNA/genetics ; Estrogens/physiology ; Female ; *Genes ; Lipoproteins/*genetics ; Liver/secretion ; Male ; Oocytes/metabolism ; RNA, Messenger/metabolism ; Receptors, Estrogen/metabolism ; Repetitive Sequences, Nucleic Acid ; Vitellogenins/biosynthesis/*genetics ; Xenopus laevis/*genetics/metabolism
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  • 28
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-01-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wade, N -- New York, N.Y. -- Science. 1981 Jan 2;211(4477):33-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7444446" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA/*genetics ; Electrophoresis, Polyacrylamide Gel ; Humans ; Isoelectric Point ; Molecular Weight ; Proteins/analysis/*genetics
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  • 29
    Publication Date: 1981-07-10
    Description: Southern blot hybridization was used to identify human and other vertebrate DNA sequences that were homologous to cloned DNA fragments containing the oncogenic nucleic acid sequences of three different type C mammalian retroviruses (simian sarcoma virus, the Snyder-Theilen strain of feline sarcoma virus, and the Harvey strain of murine sarcoma virus). Each onc gene counterpart has a single genetic locus, which probably contains non-onc intervening sequences. The human DNA sequences may represent genes important to cell growth or cell differentiation, or both. Their identification and isolation may allow elucidation of their role in these processes and in neoplasias.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wong-Staal, F -- Dalla-Favera, R -- Franchini, G -- Gelmann, E P -- Gallo, R C -- New York, N.Y. -- Science. 1981 Jul 10;213(4504):226-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264598" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Cell Transformation, Viral ; *Cloning, Molecular ; DNA/*genetics ; DNA, Viral/*genetics ; *Genes ; Humans ; Nucleic Acid Hybridization ; Retroviridae/*genetics ; Sarcoma Virus, Woolly Monkey/genetics ; Sarcoma Viruses, Murine/genetics ; Species Specificity
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  • 30
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-07-02
    Description: Gastric acid secretion has been thought to depend on histamine stimulation of the parietal cell. However, in the 2-week-old rat neither exogenous histamine nor the H-2 receptor agonist impromidine stimulates acid secretion, whereas pentagastrin and the cholinergic agent bethanechol are potent stimuli. At this age, the effect of pentagastrin in acid secretion is not blocked by the H-2 receptor antagonist cimetidine, nor is it potentiated by impromidine. These data suggest that, in the rat pup, the acid secretory response to pentagastrin and cholinergic agents occurs before the histamine-mediated system is functional and operates independently of the actions of histamine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ackerman, S H -- K1-MH00077/MH/NIMH NIH HHS/ -- R01-AM-18804/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1982 Jul 2;217(4554):75-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6211765" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Bethanechol Compounds/pharmacology ; Gastric Juice/drug effects/*secretion ; Gastric Mucosa/growth & development ; Guanidines/pharmacology ; Histamine/pharmacology ; Imidazoles/pharmacology ; Impromidine ; Pentagastrin/pharmacology ; Rats ; Rats, Inbred Strains ; Receptors, Histamine H2/drug effects
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  • 31
    Publication Date: 1982-01-08
    Description: (+/-)-N-Allylnormetazocine is a benzomorphan opioid with psychotomimetic effects. The pure stereoisomers of this compound, as well as the racemic mixture, were compared to phencyclidine for their behavioral effects on squirrel monkeys and rats trained to discriminate phencyclidine from saline. Dose-response determinations were made for responses to phencyclidine, to a racemic mixture of N-allylnormetazocine, and to the pure levo and dextro isomers of N-allylnormetazocine. In both rats and monkeys, the dextro isomer and the racemic mixture produced dose-dependent responses appropriate for phencyclidine; the levo isomer did not produce the responses appropriate for phencyclidine at any of the doses tested. In both species, the levo isomer was more potent than the dextro isomer in decreasing the rate of responding. Thus racemic N-allylnormetazocine is a mixture of compounds that produce different behavioral effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brady, K T -- Balster, R L -- May, E L -- DA-00490/DA/NIDA NIH HHS/ -- DA-01442/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 8;215(4529):178-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6274022" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/*drug effects ; Male ; Naloxone/pharmacology ; Phenazocine/*analogs & derivatives/pharmacology ; Phencyclidine/pharmacology ; Rats ; Rats, Inbred Strains ; Receptors, Opioid/drug effects ; Saimiri ; Stereoisomerism ; Structure-Activity Relationship
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  • 32
    Publication Date: 1982-10-08
    Description: Rats whose pregnancies were surgically terminated on day 17 of gestation were injected with morphine, morphine plus naloxone hydrochloride, or saline, and then tested for maternal responsiveness toward foster young. Morphine treatment alone significantly disrupted the rate of onset and quality of maternal responsiveness. Concurrent administration of naloxone to morphine-injected rats reinstated the rapid onset of behavioral responsiveness toward foster young, such that the responsiveness of the rats treated with both morphine and naloxone was indistinguishable from that shown by saline-injected controls. The disruptive effects of morphine did not appear to result from a general reduction in activity levels as measured in an open-field apparatus. These findings suggest that the normal onset and maintenance of maternal behavior in the rat may be regulated by endogenous opiates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bridges, R S -- Grimm, C T -- New York, N.Y. -- Science. 1982 Oct 8;218(4568):166-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123227" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/*drug effects ; Drug Antagonism ; Female ; Morphine/*pharmacology ; Naloxone/*pharmacology ; Pregnancy ; Rats ; Rats, Inbred Strains
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  • 33
    Publication Date: 1982-01-15
    Description: The electrophysiological effects of ethanol in low doses (5 to 20 millimoles per liter or 23 to 92 milligrams per 100 milliliters) were examined intracellularly in CA1 cells of rat hippocampus in vitro. Inhibitory and excitatory postsynaptic potentials were increased when ethanol was applied to the respective synaptic terminal regions. Postsynaptically, ethanol caused a moderate hyperpolarization with increased membrane conductance, even when synaptic transmission was blocked. Ethanol augmented the hyperpolarization that followed repetitive firing or that followed the eliciting of calcium spikes in the presence of tetrodotoxin, but not the rapid afterhyperpolarization in calcium-free medium. Ethanol appears to augment calcium-mediated mechanisms both pre- and postsynaptically.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carlen, P L -- Gurevich, N -- Durand, D -- R01 NS16660-01/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 15;215(4530):306-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7053581" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/physiology ; Electric Conductivity ; Ethanol/*pharmacology ; Hippocampus/*drug effects/physiology ; Male ; Membrane Potentials/drug effects ; Potassium/physiology ; Rats ; Rats, Inbred Strains ; Synaptic Membranes/drug effects ; Tetrodotoxin/pharmacology
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  • 34
    Publication Date: 1982-10-01
    Description: Rats rotated to the left when 5'-N-ethylcarboxamide adenosine (NECA) was injected into the left caudate nucleus and apomorphine was administered subcutaneously. The combination of NECA and apomorphine was more potent than L-(phenylisopropyl)adenosine and apomorphine in eliciting rotation, suggesting the involvement of adenosine receptors of the Ra type. The response was reduced when 2',5'-dideoxyadenosine was injected along with NECA into the caudate nucleus or when theorphylline was given intraperitoneally. Higher doses of apomorphine elicited a self-mutilatory response after the injection of NECA into the caudate nucleus. These results suggest that adenosine may be involved in the modulation of dopaminergic function in the striatum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Green, R D -- Proudfit, H K -- Yeung, S M -- New York, N.Y. -- Science. 1982 Oct 1;218(4567):58-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123218" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/administration & dosage/*analogs & derivatives/pharmacology ; Adenosine-5'-(N-ethylcarboxamide) ; Animals ; Apomorphine/pharmacology ; Caudate Nucleus/*physiology ; Corpus Striatum/*physiology ; Dopamine/*physiology ; Injections ; Kinetics ; Male ; Motor Activity/drug effects ; Rats ; Rats, Inbred Strains ; Rotation ; Vasodilator Agents/*pharmacology
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  • 35
    Publication Date: 1982-02-19
    Description: The 14S messenger RNA (1300 to 1500 nucleotides) for the alpha A chain of alpha-crystallin of the mammalian lens is nearly three times larger than required to code for the polypeptide that contains 173 amino acids. As a means of accounting for this anomaly, a complementary DNA clone for the mouse alpha A-crystallin messenger RNA was constructed in pBR322 and sequenced. Derivation of the protein sequence from the nucleic acid sequence showed that mouse alpha A-crystallin is similar to that of other organisms. The messenger RNA contains 536 nucleotides located on the 3' side of the coding region, excluding the polyadenylate stretch. This 3' sequence does not encode any other crystallin and has multiple termination codons in the three possible reading frames.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉King, C R -- Shinohara, T -- Piatigorsky, J -- New York, N.Y. -- Science. 1982 Feb 19;215(4535):985-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7156978" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cloning, Molecular ; Crystallins/*genetics ; Mice ; RNA, Messenger/*genetics
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  • 36
    Publication Date: 1982-10-08
    Description: Urotensin I, purified from extracts of the urophysis of a teleost fish (Catostomus commersoni), exhibits potent hypotensive activity (mammals and birds) and corticotropin-releasing activity (both fish and mammals). The primary structure of this 41-residue peptide was determined to be H-Asn-Asp-Asp-Pro-Pro-Ile-Ser-Ile-Asp-Leu-Thr-Phe-His-Leu-Leu-Arg-Asn-Met-Ile-Glu - Met-Ala-Arg-Ile-Glu-Asn-Glu-Arg-Glu-Gln-Ala-Gly-Leu-Asn-Arg-Lys-Tyr-Leu-Asp-Glu -Val-NH2. Extraction with 0.1N HCl at 100 degrees C cleaves the amino-terminal tripeptide, yeilding a fully active analog, urotensin I(4-41). The amino acid sequence was confirmed by measuring the biological activity of synthetic urotensin I(4-41). Urotensin I exhibits a striking sequence homology with ovine corticotropin-releasing factor and with frog sauvagine. These three peptides exhibit similar activities in biological test systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lederis, K -- Letter, A -- McMaster, D -- Moore, G -- Schlesinger, D -- New York, N.Y. -- Science. 1982 Oct 8;218(4568):162-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6981844" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Corticotropin-Releasing Hormone ; Fishes ; Peptides/*isolation & purification ; Species Specificity ; Urotensins/*isolation & purification
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  • 37
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-07-02
    Description: Inosine peripherally administered to rats markedly suppressed spontaneous food intake and food intake induced by diazepam, muscimol, insulin, and food deprivation. The purines 2-deoxyguanosine and 2-deoxyinosine also suppressed food deprivation-induced feeding, whereas 7-methylinosine, which does not bind to the benzodiazepine binding site in vitro, had no effect on food intake when compared with controls. These results suggest that purines may represent endogenous substances that regulate food intake through interactions with the benzodiazepine receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levine, A S -- Morley, J E -- New York, N.Y. -- Science. 1982 Jul 2;217(4554):77-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7046046" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Appetite/*drug effects ; Deoxyguanosine/pharmacology ; Diazepam/pharmacology ; Eating/*drug effects ; Food Deprivation ; Inosine/analogs & derivatives/pharmacology ; Insulin/pharmacology ; Male ; Muscimol/pharmacology ; Purines/*pharmacology ; Rats ; Rats, Inbred Strains ; Structure-Activity Relationship
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  • 38
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-08-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1982 Aug 27;217(4562):817-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7100925" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *DNA/*analysis ; *Information Systems
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  • 39
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-08-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1982 Aug 13;217(4560):621-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6283639" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; DNA/*genetics ; DNA Transposable Elements ; DNA, Satellite/genetics ; *Repetitive Sequences, Nucleic Acid ; Species Specificity
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  • 40
    Publication Date: 1982-06-25
    Description: Avian myeloblastosis virus is defective in reproductive capacity, requiring a helper virus to provide the viral proteins essential for synthesis of new infectious virus. This virus arose by recombination of the nondefective helper virus and host cellular sequences present within the normal avian genome. These latter sequences are essential for leukemogenic activity. The complete nucleotide sequence of this region is reported. Within the acquired cellular sequences there is an open reading frame of 795 nucleotides starting with the initiation codon ATG (adenine, thymine, guanine) and terminating with the triplet TAG. This open reading frame could code for the putative transforming protein of 265 amino acids with a molecular weight of approximately 30,000.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rushlow, K E -- Lautenberger, J A -- Papas, T S -- Baluda, M A -- Perbal, B -- Chirikjian, J G -- Reddy, E P -- New York, N.Y. -- Science. 1982 Jun 25;216(4553):1421-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6283631" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avian Leukosis Virus/*genetics ; Avian Myeloblastosis Virus/*genetics ; Avian Sarcoma Viruses/genetics ; Base Sequence ; Cell Transformation, Viral ; Chickens/genetics ; DNA Restriction Enzymes ; Gene Expression Regulation ; *Genes, Viral ; RNA, Viral/analysis ; Viral Proteins/biosynthesis
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  • 41
    Publication Date: 1982-10-08
    Description: A synthetic antagonist of luteinizing hormone-releasing hormone blocked ovulation in rats in a dose-dependent manner when given by gavage on the afternoon of proestrus. Ovulation was delayed for at least 1 day in all animals given 2 milligrams of antogonist and in some of the animals treated with 1 or 0.5 milligram. Oral administration of 2 milligrams also blocked the preovulatory surge of luteinizing hormone. This demonstration that antagonists of luteinizing hormone-releasing hormone can have oral antiovulatory activity clearly enhances their therapeutic potential.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nekola, M B -- Horvath, A -- Ge, L J -- Coy, D H -- Schally, A V -- HD-0-2831/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1982 Oct 8;218(4568):160-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6750790" target="_blank"〉PubMed〈/a〉
    Keywords: Administration, Oral ; Animals ; Female ; Gonadotropin-Releasing Hormone/*analogs & derivatives/pharmacology ; Luteinizing Hormone/secretion ; Ovulation/*drug effects ; Pregnancy ; Proestrus/drug effects ; Rats ; Rats, Inbred Strains
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  • 42
    Publication Date: 1982-08-27
    Description: A cavity was made in the brain (entorhinal cortex) of developing or adult rats, and a small piece of Gelfoam was emplaced to collect fluid secreted into the wound. The neuronotrophic activity of the fluid was assayed with sympathetic and parasympathetic neurons in culture. The results show that wounds in the brain of developing or adult rats stimulate the accumulation of neuronotrophic factors and that the activity of these factors increases over the first few days after infliction of the damage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nieto-Sampedro, M -- Lewis, E R -- Cotman, C W -- Manthorpe, M -- Skaper, S D -- Barbin, G -- Longo, F M -- Varon, S -- AG-00538/AG/NIA NIH HHS/ -- MH-19691/MH/NIMH NIH HHS/ -- NS-16349/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 27;217(4562):860-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7100931" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenergic Fibers/physiology ; Animals ; Brain/*physiology ; Brain Injuries/*physiopathology ; Cell Survival/drug effects ; Cells, Cultured ; Cholinergic Fibers/physiology ; Kinetics ; Nerve Growth Factors/*metabolism/pharmacology ; *Nerve Regeneration ; Rats ; Rats, Inbred Strains ; Wound Healing
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  • 43
    Publication Date: 1982-04-16
    Description: The size of the gene pool potentially encoding antibodies to p-azophenyl arsonate has been examined. A heavy chain-specific full-length complementary DNA clone has been constructed with the use of messenger RNA from a hybridoma that produces antibodies to the arsonate hapten and bears nearly a full complement of the determinants comprising the cross-reactive idiotype (CRI). The sequences of both the complementary DNA clone and the corresponding immunoglobulin heavy chain have been independently determined. A probe for the variable region gene was prepared from the original heavy chain complementary DNA clone and used to analyze, by Southern filter hybridization, genomic DNA from both A/J (CRI positive) and BALB/c (CRI negative) mice. Approximately 20 to 25 restriction fragments containing "germline" variable region gene segments were detected in both strains, and many are shared by both, Since 35 CRI-positive heavy chains have been partially sequenced thus far and 31 are different, the results of the hybridization analysis suggest that somatic mutation events involving the variable region gene segments of the heavy chain play a role in the origin of the amino acid sequence diversity seen in this system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sims, J -- Rabbitts, T H -- Estess, P -- Slaughter, C -- Tucker, P W -- Capra, J D -- A112127/PHS HHS/ -- AI-06020/AI/NIAID NIH HHS/ -- AI18016/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1982 Apr 16;216(4543):309-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6801765" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding Sites, Antibody/*genetics ; Genes ; Haptens ; Immunoglobulin Heavy Chains/*genetics ; Immunoglobulin Idiotypes/genetics ; Immunoglobulin Variable Region/*genetics ; Mice ; *Mutation
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  • 44
    Publication Date: 1982-12-10
    Description: Simian sarcoma virus (SSV) deletion mutants were constructed from a molecular clone containing the entire infectious provirus. Transfection analysis of these mutants localized the SSV transforming gene to a small region of the viral genome encompassing its cell-derived sequence (v-sis). Antiserum to a peptide synthesized on the basis of the predicted amino acid sequence of the SSV transforming gene detected a 28,000-dalton protein that was specifically expressed in SSV transformed cells and that corresponded in size to that predicted from the v-sis coding sequence. The v-sis gene product designated p28sis was not a phosphoprotein, nor did it possess detectable protein kinase activity. These findings distinguish p28sis from a number of other retroviral onc proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Robbins, K C -- Devare, S G -- Reddy, E P -- Aaronson, S A -- New York, N.Y. -- Science. 1982 Dec 10;218(4577):1131-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6293053" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Viral ; Base Sequence ; *Cell Transformation, Viral ; *Genes, Viral ; Mice ; Molecular Weight ; *Oncogenes ; Phosphoproteins/genetics ; Protein Kinases/genetics ; Retroviridae/*genetics ; Sarcoma Virus, Woolly Monkey/*genetics ; Viral Proteins/*genetics/immunology
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  • 45
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-06-04
    Description: A family of related sequences that includes approximately 500,000 members is the most prominent short dispersed repeat family in primate and rodent DNA's. The primate sequence is approximately 300 base pairs in length and is composed of two imperfectly repeated monomer units, whereas the rodent repeat consists of only a single monomer. Properties of this repeat sequence, its flanking sequences in chromosomal DNA, and RNA's transcribed from it suggest that it may be a mobile DNA element inserted at hundreds of thousands of different chromosomal locations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schmid, C W -- Jelinek, W R -- New York, N.Y. -- Science. 1982 Jun 4;216(4550):1065-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6281889" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Biological Evolution ; DNA/*genetics ; *DNA Transposable Elements ; Genetic Linkage ; Muridae/genetics ; Primates/genetics ; RNA Polymerase III/metabolism ; RNA, Heterogeneous Nuclear/genetics ; *Repetitive Sequences, Nucleic Acid ; Transcription, Genetic
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  • 46
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-03-25
    Description: The activity of 7,12-dimethylbenz[a]anthracene hydroxylase in the rat ovary is several times higher in the proestrous phase of the estrous cycle than in the estrous and metestrous plus diestrous phases. Administration of gonadotropin leads to a similar increase in the capacity of the ovary to metabolize xenobiotics. This variation in the activity of 7,12-dimethylbenz[a]anthracene hydroxylase during the estrous cycle may be related to the marked changes in the incidence of ovarian cancer during menopause and in women taking contraceptive pills.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bengtsson, M -- Rydstrom, J -- New York, N.Y. -- Science. 1983 Mar 25;219(4591):1437-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6681915" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aryl Hydrocarbon Hydroxylases/*metabolism ; Cytochrome P-450 Enzyme System/metabolism ; Epoxide Hydrolases/metabolism ; *Estrus ; Female ; Glutathione Transferase/metabolism ; Gonadotropins, Equine/*pharmacology ; Metestrus ; Ovary/*physiology ; Pregnancy ; Proestrus ; Quinone Reductases/metabolism ; Rats ; Rats, Inbred Strains
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  • 47
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-05-14
    Description: The amino acid sequences of mouse brain Thy-1 glycoproteins are shown to be homologous to those of variable-region immunoglobulin domains. There is also good homology with constant domains and beta 2-microglobulin; overall the results suggest that Thy-1 may be like the primordial immunoglobulin domain. Preliminary evidence for an invertebrate Thy-1 homolog supports this possibility.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Williams, A F -- Gagnon, J -- New York, N.Y. -- Science. 1982 May 14;216(4547):696-703.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6177036" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, Surface/*immunology ; Antigens, Thy-1 ; Biological Evolution ; Epitopes ; Glycoproteins/*immunology ; Immunoglobulin Constant Regions/immunology ; Immunoglobulin Variable Region/immunology ; Immunoglobulins/*immunology ; Isoantibodies/biosynthesis ; Protein Conformation
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  • 48
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-11-12
    Description: Transfer RNA's are probably very strongly selected for translational efficiency. In this article, the argument is presented that the coding performance of the triplet anticodon is enhanced by selection of a matching anticodon loop and stem sequence. the anticodon plus these nearby sequence features (the extended anticodon) therefore contains more coding information than the anticodon alone and can perform more efficiently and accurately at the ribosome. This idea successfully accounts for the relative efficiencies of many transfer RNA's.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yarus, M -- New York, N.Y. -- Science. 1982 Nov 12;218(4573):646-52.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6753149" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Escherichia coli/genetics ; Kinetics ; Nucleic Acid Conformation ; *Protein Biosynthesis ; RNA, Transfer/*genetics ; Ribosomes/metabolism ; Structure-Activity Relationship ; Suppression, Genetic
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  • 49
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-05-27
    Description: Human platelet-derived growth factor (PDGF) obtained from outdated human platelets was subjected to amino-terminal amino acid sequence analysis by automated Edman degradation. Despite the apparent presence of limited proteolytic degradation of the protein derived from this method, the sequence analysis reveals two primary peptide sequences and suggests that active PDGF is composed of two, possibly homologous, peptides linked by a disulfide bond or bonds.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Antoniades, H N -- Hunkapiller, M W -- CA30101/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 May 27;220(4600):963-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6844921" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Electrophoresis, Polyacrylamide Gel ; Growth Substances/genetics/*metabolism ; Humans ; Molecular Weight ; Peptides/genetics/*metabolism ; Platelet-Derived Growth Factor
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  • 50
    Publication Date: 1983-06-17
    Description: Animals with a history of receiving daily injections of +-amphetamine in a specific environment showed a placebo effect (enhanced activity) when injected with saline and placed there; control animals with similar but dissociated drug histories and experience with the test chamber failed to show the effect. The dopamine receptor blocker pimozide antagonized the establishment of conditioning. However, the same dose of pimozide, when given to previously conditioned animals on the placebo test day, failed to antagonize the expression of conditioned activity. Thus, during conditioning dopaminergic neurons mediated a change that subsequently influenced behavior even when dopaminergic systems were blocked. Although schizophrenia may be related to hyperfunctioning of dopamine, neuroleptic drugs, which block dopamine receptors on their first administration, do not have therapeutic effects for a number of days. The results of the pimozide experiments may resolve this paradox.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beninger, R J -- Hahn, B L -- New York, N.Y. -- Science. 1983 Jun 17;220(4603):1304-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857251" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Conditioning (Psychology)/*drug effects/physiology ; Dextroamphetamine/antagonists & inhibitors/*pharmacology ; Humans ; Male ; Pimozide/*pharmacology ; Rats ; Rats, Inbred Strains ; Receptors, Dopamine/physiology ; Reinforcement (Psychology) ; Schizophrenia/physiopathology
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  • 51
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-06-10
    Description: A comparison between eukaryotic gene sequences and protein sequences of homologous enzymes from bacterial and mammalian organisms shows that intron-exon junctions frequently coincide with variable surface loops of the protein structures. The altered surface structures can account for functional differences among the members of a family. Sliding of the intron-exon junctions may constitute one mechanism for generating length polymorphisms and divergent sequences found in protein families. Since intron-exon junctions map to protein surfaces, the alterations mediated by sliding of these junctions can be effected without disrupting the stability of the protein core.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Craik, C S -- Rutter, W J -- Fletterick, R -- AM21344/AM/NIADDK NIH HHS/ -- AM26081/AM/NIADDK NIH HHS/ -- GM28520/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jun 10;220(4602):1125-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6344214" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Bacterial Proteins ; Base Sequence ; Biological Evolution ; DNA/genetics ; Endopeptidases/genetics ; Eukaryotic Cells/metabolism ; Genes ; Genes, Bacterial ; Protein Conformation ; Proteins/*genetics ; *Serine Endopeptidases ; Tetrahydrofolate Dehydrogenase/genetics
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  • 52
    Publication Date: 1983-07-08
    Description: Microvoltammetric electrodes were used to monitor dopamine released in the caudate nucleus of the rat after electrical stimulation of the medial forebrain bundle. The time resolution of the technique is sufficient to determine in vivo concentration changes on a time scale of seconds. Direct evidence identifying the substance released as dopamine was obtained both voltammetrically and pharmacologically. Administration of alpha-methyl-p-tyrosine terminates the release of dopamine, although tissue stores of dopamine are still present. Thus there appears to be a compartment for dopamine storage that is not available for immediate release. This compartment appears to be mobilized by amfonelic acid, since administration of this agent after alpha-methyl-p-tyrosine returns the concentration of dopamine released by electrical stimulation to 75 percent of the original amount.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ewing, A G -- Bigelow, J C -- Wightman, R M -- KO 4 NS000356/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 8;221(4606):169-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857277" target="_blank"〉PubMed〈/a〉
    Keywords: Amphetamine/pharmacology ; Animals ; Caudate Nucleus/drug effects/*metabolism ; Dopamine/*metabolism ; Male ; Methyltyrosines/pharmacology ; Microelectrodes ; Naphthyridines/pharmacology ; Rats ; Rats, Inbred Strains ; alpha-Methyltyrosine
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  • 53
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-08-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fox, J L -- New York, N.Y. -- Science. 1983 Aug 12;221(4611):625-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6603019" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Animals, Laboratory ; Jurisprudence ; Mice ; *Mice, Inbred BALB C ; Rats ; Rats, Inbred Lew ; Rats, Inbred Strains ; Research ; United States ; Wisconsin
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  • 54
    Publication Date: 1983-05-27
    Description: Adenosine receptors were made visible on light microscopy by autoradiography with tritiated cyclohexyladenosine. In the cerebellum, adenosine receptors were absent in Weaver mice, which lack granule cells, and were displaced in Reeler mice, which have displacements of granule cells. Thus, adenosine receptors appear to be located on the axon terminals of excitatory granule cells in the cerebellum. Removal of one eye of a rat depleted adenosine receptors in the contralateral superior colliculus, suggesting that the receptors occur on axon terminals of excitatory projections from retinal ganglion cells. The presence of adenosine receptors on excitatory axon terminals may explain synaptic inhibition by adenosine and the behavioral effects of xanthines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goodman, R R -- Kuhar, M J -- Hester, L -- Snyder, S H -- DA-00266/DA/NIDA NIH HHS/ -- MH-18501/MH/NIMH NIH HHS/ -- NS-16375/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 May 27;220(4600):967-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6302841" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/*physiology ; Animals ; Autoradiography ; Axons/*physiology ; Cerebellum/physiology ; Corpus Striatum/physiology ; Hippocampus/physiology ; Mice ; Mice, Neurologic Mutants ; Rats ; Rats, Inbred Strains ; Receptors, Cell Surface/*physiology ; Receptors, Purinergic ; Retinal Ganglion Cells/physiology ; Synaptic Membranes/physiology ; Thalamus/physiology
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  • 55
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-06-10
    Description: An important question concerning the mechanism of somatic mutation of immunoglobulin variable (V) genes is whether it involves all of the numerous V genes in a differentiated B cell, independent of location, or if it is restricted to a particular chromosomal site. Comparison of the sequence of two alleles of a given V gene shows that the mutations are limited to the rearranged V gene, while the same V gene on the other chromosome has not undergone mutation. This indicates that a V gene sequence alone is not sufficient for somatic mutation to take place. The mutation is therefore restricted to the rearranged V gene and consequently does not occur before rearrangement.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gorski, J -- Rollini, P -- Mach, B -- New York, N.Y. -- Science. 1983 Jun 10;220(4602):1179-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857243" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Binding Sites, Antibody/*genetics ; Chromosomes/physiology ; DNA/genetics ; *Genes ; Immunoglobulin Constant Regions/genetics ; Immunoglobulin Variable Region/*genetics ; Immunoglobulins/genetics ; Lymphocytes/metabolism ; Mice ; *Mutation
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  • 56
    Publication Date: 1983-04-29
    Description: Long-term treatment of rats with atropine induced large increases in the numbers of muscarinic receptors and receptors for vasoactive intestinal polypeptide in the salivary glands. Since receptors for vasoactive intestinal polypeptide coexist with muscarinic receptors on the same neurons in this preparation, the results suggest that a drug that alters the sensitivity of one receptor may also affect the sensitivity of the receptor for a costored transmitter and in this way contribute to the therapeutic or side effects of the drugs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hedlund, B -- Abens, J -- Bartfai, T -- New York, N.Y. -- Science. 1983 Apr 29;220(4596):519-21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6132446" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atropine/*pharmacology ; Gastrointestinal Hormones/*metabolism ; Male ; Neurotransmitter Agents/metabolism ; Rats ; Rats, Inbred Strains ; Receptors, Cholinergic/*drug effects ; Receptors, Muscarinic/analysis/*drug effects ; Salivary Glands/analysis/innervation ; Vasoactive Intestinal Peptide/analysis/*metabolism
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  • 57
    Publication Date: 1983-06-24
    Description: The size of the Epstein-Barr virus (EBV) nuclear antigen (EBNA) in cells infected with different EBV isolates varies directly with the size of the EBV triplet repeat array, IR3. The isolate with the largest IR3 fragment has approximately 170 more codons than the isolates with the smallest IR3 fragment; it encodes an EBNA which is approximately 17,000 daltons larger than the smallest EBNA. The EBV IR3 encodes part of a 2-kilobase exon of a latently infected cell messenger RNA which must be translated into a repetitive amino acid domain of EBNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hennessy, K -- Heller, M -- van Santen, V -- Kieff, E -- CA 17281/CA/NCI NIH HHS/ -- CA 19264/CA/NCI NIH HHS/ -- GM 07183/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Jun 24;220(4604):1396-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6304878" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Viral/*genetics ; Base Sequence ; Cell Nucleus/immunology ; DNA, Viral/*genetics ; Epstein-Barr Virus Nuclear Antigens ; Herpesvirus 4, Human/*genetics/immunology ; Humans ; Mice ; RNA, Viral/genetics
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  • 58
    Publication Date: 1983-04-15
    Description: Administration of pilocarpine or physostigmine to rats treated with lithium chloride produced sustained limbic seizures, widespread brain damage, and increased concentrations of D-myo-inositol-1-phosphate (a metabolite of the phosphoinositides, lipids involved in membrane receptor function) in the brain. The syndrome was preventable with atropine. The physostigmine doses and concentrations of blood lithium that caused the syndrome are similar to those considered appropriate for psychiatric chemotherapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Honchar, M P -- Olney, J W -- Sherman, W R -- MH-14677/MH/NIMH NIH HHS/ -- MH-38894/MH/NIMH NIH HHS/ -- NS-05159/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Apr 15;220(4594):323-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6301005" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atropine/pharmacology ; Brain Chemistry/drug effects ; Chlorides/adverse effects ; Drug Interactions ; Humans ; Inositol/analogs & derivatives/analysis ; *Inositol Phosphates ; Lithium/*adverse effects ; Lithium Chloride ; Male ; Parasympathomimetics/*adverse effects ; Physostigmine/adverse effects ; Pilocarpine/adverse effects ; Rats ; Rats, Inbred Strains ; Seizures/*chemically induced ; Substance-Related Disorders/*etiology
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  • 59
    Publication Date: 1983-06-03
    Description: A synthetic analog of bovine parathyroid hormone (bPTH), [tyrosine-34] bPTH-(7-34)NH2, was found to inhibit parathyroid hormone action in vivo. When the analog and parathyroid hormone were infused simultaneously to rats at a molar ratio of 200 to 1, the analog inhibited the excretion of urinary phosphate and adenosine 3',5'-monophosphate. When infused alone at the same dose rate, the analog was devoid of agonist activity. The compound was prepared by following design principles developed for inhibitors of parathyroid hormone, and is believed to be the first antagonist of parathyroid hormone that is effective in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Horiuchi, N -- Holick, M F -- Potts, J T Jr -- Rosenblatt, M -- AM11749/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1983 Jun 3;220(4601):1053-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6302844" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cyclic AMP/urine ; Dose-Response Relationship, Drug ; Male ; Parathyroid Hormone/*antagonists & inhibitors/*pharmacology ; Peptide Fragments/*pharmacology ; Phosphates/urine ; Rats
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  • 60
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-02-18
    Description: Polynucleotide templates containing C (cytidine) as the major component facilitate the synthesis of oligonucleotides from mixtures of the activated mononucleotide derivatives (as indicated by structure 1 in the text). A nucleotide is incorporated into oligomeric products if and only if its complement is present in the template. The reaction has a high fidelity and produces products with mean chain lengths of six to ten nucleotides. Bases other than guanosine are incorporated within oligomers or at their 3' termini, but rarely at their 5' termini.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Inoue, T -- Orgel, L E -- GM-13435/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Feb 18;219(4586):859-62.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6186026" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA-Directed RNA Polymerases/*metabolism ; Hydrogen Bonding ; Models, Chemical ; RNA/*chemical synthesis ; Templates, Genetic
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  • 61
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-07-01
    Description: Oligonucleotide-directed site-specific mutagenesis was applied to alter the cleavage site in the signal peptide of the major outer membrane lipoprotein of Escherichia coli. Replacing the glycine residue at the cleavage site with an alanine residue did not affect the processing of the signal peptide. However, when the same cleavage site was constructed by the deletion of the glycine residue, the signal peptide was no longer cleaved. These results indicate that stringent structural integrity at the cleavage site in the lipoprotein signal sequence is required for correct processing of prolipoprotein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Inouye, S -- Hsu, C P -- Itakura, K -- Inouye, M -- GM19043/GM/NIGMS NIH HHS/ -- GM30395/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 1;221(4605):59-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6344218" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *Bacterial Outer Membrane Proteins ; Base Sequence ; DNA, Bacterial/metabolism ; Electrophoresis, Polyacrylamide Gel ; Escherichia coli/*metabolism ; *Escherichia coli Proteins ; Lipoproteins/*biosynthesis ; Membrane Proteins/biosynthesis ; Mutation ; Protein Precursors/*biosynthesis
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  • 62
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-01-07
    Description: The illustration that accompanied the review by C. C. Albritton, Jr., of W. H. Goetzmann and K. Sloan's Looking Far North (Viking, New York, 1982) in the issue of 10 December, page 1109, should have been credited to the Bancroft Library, University of California, Berkeley, as well as to the book under review.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lerman, L S -- New York, N.Y. -- Science. 1983 Jan 7;219(4580):10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6184778" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; RNA/*physiology ; RNA, Small Nuclear
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  • 63
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-03-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1983 Mar 4;219(4588):1052-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6186029" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Nucleus/physiology ; DNA/*genetics ; Humans ; Poly A/genetics ; RNA/*genetics ; Repetitive Sequences, Nucleic Acid ; Transcription, Genetic
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  • 64
    Publication Date: 1983-11-25
    Description: Intracisternal injection of ovine corticotropin-releasing factor (CRF) into the pylorus-ligated rat or the rat with gastric fistula resulted in a dose-dependent inhibition of gastric secretion stimulated with pentagastrin or thyrotropin-releasing hormone. When injected into the lateral hypothalamus--but not when injected into the cerebral cortex--CRF suppressed pentagastrin-stimulated acid secretion. The inhibitory effect of CRF was blocked by vagotomy and adrenalectomy but not by hypophysectomy or naloxone treatment. These results indicate that CRF acts within the brain to inhibit gastric acid secretion through vagal and adrenal mechanisms and not through hypophysiotropic effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tache, Y -- Goto, Y -- Gunion, M W -- Vale, W -- River, J -- Brown, M -- AM30110/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1983 Nov 25;222(4626):935-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6415815" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenalectomy ; Animals ; Brain/*drug effects ; Cerebral Cortex/drug effects ; Corticotropin-Releasing Hormone/administration & dosage/*pharmacology ; Dose-Response Relationship, Drug ; Gastric Acid/*secretion ; Hypophysectomy ; Hypothalamus/drug effects ; Male ; Pentagastrin/antagonists & inhibitors ; Rats ; Rats, Inbred Strains ; Thyrotropin-Releasing Hormone/antagonists & inhibitors ; Vagotomy
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  • 65
    Publication Date: 1983-04-01
    Description: Intracerebroventricular administration of ILA's, a preparation enriched in insulin-like growth factors, caused a marked decrease in growth hormone secretory episodes and in body weight associated with reduced food intake over 24 hours. Central injection of insulin and bovine serum albumin had no such effects. These findings suggest that insulin-like growth factors play a role in growth hormone negative feedback and body weight regulation at the level of the central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tannenbaum, G S -- Guyda, H J -- Posner, B I -- New York, N.Y. -- Science. 1983 Apr 1;220(4592):77-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6338593" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Weight/*drug effects ; Brain/drug effects/*physiology ; Eating/drug effects ; Growth Hormone/antagonists & inhibitors/blood/*physiology ; Insulin/blood/*pharmacology ; Male ; Peptides/*pharmacology ; Rats ; Rats, Inbred Strains ; Somatomedins/*pharmacology
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  • 66
    Publication Date: 1983-11-18
    Description: Hybridoma technology has made it possible to introduce into continuous culture normal antibody-forming cells and to obtain large amounts of the immunoglobulin produced by each of these cells. Examination of the structure of a number of monoclonal antibodies that react with a single antigen has provided new information on the structural basis of the specificity and affinity of antibodies. Comparisons of families of monoclonal antibodies derived from a single germ line gene revealed the importance of somatic mutation in generating antibody diversity. Monoclonal antibodies that react with variable regions of other monoclonals allow the further dissection and modulation of the immune response. Finally, the continued somatic instability of immunoglobulin genes in cultured antibody-forming cells makes it possible to determine the rate of somatic mutation and to generate mutant monoclonal antibodies that may be more effective serological reagents.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Teillaud, J L -- Desaymard, C -- Giusti, A M -- Haseltine, B -- Pollock, R R -- Yelton, D E -- Zack, D J -- Scharff, M D -- 5T32GM7288/GM/NIGMS NIH HHS/ -- AI05231/AI/NIAID NIH HHS/ -- AI10702/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1983 Nov 18;222(4625):721-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6356353" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies, Monoclonal/genetics/*immunology ; *Antibody Diversity ; Antibody Specificity ; Genes ; Hybridomas/immunology ; Immunoglobulin Idiotypes/immunology ; Immunoglobulin Variable Region/genetics ; Mice ; Mutation ; Protein Conformation ; Structure-Activity Relationship
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  • 67
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-02-11
    Description: The prospects for protein engineering, including the roles of x-ray crystallography, chemical synthesis of DNA, and computer modelling of protein structure and folding, are discussed. It is now possible to attempt to modify many different properties of proteins by combining information on crystal structure and protein chemistry with artificial gene synthesis. Such techniques offer the potential for altering protein structure and function in ways not possible by any other method.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ulmer, K M -- New York, N.Y. -- Science. 1983 Feb 11;219(4585):666-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6572017" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Crystallography ; Genes ; *Genetic Engineering ; Models, Molecular ; Molecular Biology/trends ; Protein Conformation ; Proteins/*genetics ; X-Ray Diffraction
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  • 68
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-02-11
    Description: Enhancers, or activators, dramatically increase the transcriptional activity of certain eukaryotic genes. A series of multiple point mutations affecting the simian virus 40 (SV40) enhancer-activator region were generated in order to define the nucleotide sequence required for this function. Three independent assays provided information leading to the identification of nucleotides essential for enhancer function. One class leads to a decrease in gene expression, while the second completely abolishes functional activity. One critical replacement appears to be the first G (guanine) in a sequence TGGAAAG (T, thymine, A, adenine) located in the 5' region of the 72 base-pair repeat of SV40. Comparison of this sequence with nucleotide sequences in other known enhancers leads to the identification of potential related core elements.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weiher, H -- Konig, M -- Gruss, P -- New York, N.Y. -- Science. 1983 Feb 11;219(4585):626-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6297005" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA Replication ; *Gene Expression Regulation ; Mutation ; *Operon ; Plasmids ; Repetitive Sequences, Nucleic Acid ; Simian virus 40/*genetics ; Virus Replication
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  • 69
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-08-05
    Description: Administration of dexamethasone significantly enhanced the pituitary growth hormone response to growth hormone-releasing factor in intact as well as adrenalectomized rats. Thus the inhibitory effects of glucocorticosteroids on somatic growth which involve an interaction of these steroids and growth hormone at a peripheral level may also involve a modification of pathways within the central nervous system that regulate normal growth hormone secretion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wehrenberg, W B -- Baird, A -- Ling, N -- AM-18811/AM/NIADDK NIH HHS/ -- HD 09690/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1983 Aug 5;221(4610):556-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6408735" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenalectomy ; Animals ; Dexamethasone/pharmacology ; Drug Interactions ; Glucocorticoids/*pharmacology ; Growth Hormone/blood/secretion ; Growth Hormone-Releasing Hormone/*pharmacology ; Male ; Rats ; Rats, Inbred Strains
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  • 70
    Publication Date: 1983-02-11
    Description: The surface of rabies virus is composed of an approximately 60,000 dalton glycoprotein, in which most of the antigenic and immunogenic determinants of the virus reside. We have constructed plasmids for the direct expression in Escherichia coli of the mature full length rabies glycoprotein gene and also for the expression of a glycoprotein gene which has been truncated to exclude the coding region for a hydrophobic, possibly transmembrane, domain of the protein. Escherichia coli harboring the plasmids synthesize analog proteins which conform by several biochemical and antigenic criteria to rabies glycoprotein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yelverton, E -- Norton, S -- Obijeski, J F -- Goeddel, D V -- New York, N.Y. -- Science. 1983 Feb 11;219(4585):614-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6297004" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cloning, Molecular ; Escherichia coli ; Genes, Viral ; Genetic Vectors ; Glycoproteins/*genetics/immunology ; Plasmids ; Rabies virus/*genetics/immunology ; Viral Proteins/immunology
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  • 71
    Publication Date: 1983-09-16
    Description: From birth to day 21, rat offspring received daily injections of naltrexone at a dosage that blocked morphine-induced analgesia 24 hours a day. At 21 days, body, brain, and cerebellar weights of naltrexone-injected animals were 18, 11, and 5 percent greater than corresponding control weights. In addition, morphometric analysis of the cerebrum revealed a somatosensory cortex that was 18 percent thicker than that of the controls. The cerebellum of naltrexone-treated rats was 41 percent larger in total area and contained at least 70 percent more glial cells and 30 percent more granule neurons. Neurons derived prenatally were unaffected by drug treatment. These results show that naltrexone can stimulate body and brain growth in rats and suggest a role for the endorphin and opiate receptor system in development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zagon, I S -- McLaughlin, P J -- New York, N.Y. -- Science. 1983 Sep 16;221(4616):1179-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6612331" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Body Weight/drug effects ; Brain/*drug effects/growth & development/ultrastructure ; Cerebellum/drug effects ; Morphine/*antagonists & inhibitors ; Naloxone/*analogs & derivatives ; Naltrexone/*pharmacology ; Neuroglia/drug effects ; Organ Size/drug effects ; Rats ; Rats, Inbred Strains ; Somatosensory Cortex/drug effects
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  • 72
    Publication Date: 1984-03-23
    Description: Rats maintained for 12 weeks on diets moderately or more severely deficient in magnesium showed significant elevations in arterial blood pressure compared to control animals. Examination of the mesenteric microcirculation in situ revealed that dietary magnesium deficiency resulted in reduced capillary, postcapillary, and venular blood flow concomitant with reduced terminal arteriolar, precapillary sphincter, and venular lumen sizes. The greater the degree of dietary magnesium deficiency the greater the reductions in microvascular lumen sizes. These findings may provide a rationale for the etiology, as well as treatment, of some forms of hypertensive vascular disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Altura, B M -- Altura, B T -- Gebrewold, A -- Ising, H -- Gunther, T -- HL18015/HL/NHLBI NIH HHS/ -- HL29600/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1984 Mar 23;223(4642):1315-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6701524" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arterioles/pathology ; *Blood Pressure ; Capillaries/pathology ; Magnesium/blood ; Magnesium Deficiency/pathology/*physiopathology ; Male ; *Microcirculation ; Rats ; Rats, Inbred Strains ; *Vasoconstriction ; Venules/pathology
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  • 73
    Publication Date: 1984-06-01
    Description: Crude extracts of rat atria reduced the basal amount of aldosterone released from rat zona glomerulosa cells and partially inhibited aldosterone stimulation by adrenocorticotropic hormone and angiotensin II. The destruction of this activity by trypsin suggests that the active factor is a peptide, possibly atrial natriuretic factor. These data suggest that atrial natriuretic factor affects sodium excretion by the kidneys both directly and through the inhibition of aldosterone production.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Atarashi, K -- Mulrow, P J -- Franco-Saenz, R -- Snajdar, R -- Rapp, J -- New York, N.Y. -- Science. 1984 Jun 1;224(4652):992-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6326267" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenocorticotropic Hormone/pharmacology ; Aldosterone/*biosynthesis ; Angiotensin II/pharmacology ; Animals ; *Atrial Function ; Dogs ; Female ; Kidney/drug effects/metabolism ; Mineralocorticoid Receptor Antagonists/pharmacology ; Natriuresis/drug effects ; Rats ; Rats, Inbred Strains ; Trypsin/pharmacology
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  • 74
    Publication Date: 1984-08-31
    Description: A T lymphotropic virus found in patients with the acquired immune deficiency syndrome (AIDS) or lymphadenopathy syndrome has been postulated to be the cause of AIDS. Immunological analysis of this retrovirus and its biological properties suggest that it is a member of the family of human T-lymphotropic retroviruses known as HTLV. Accordingly, it has been named HTLV-III. In the present report it is shown by nucleic acid hybridization that sequences of the genome of HTLV-III are homologous to the structural genes (gag, pol, and env) of both HTLV-I and HTLV-II and to a potential coding region called pX located between the env gene and the long terminal repeating sequence that is unique to the HTLV family of retroviruses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arya, S K -- Gallo, R C -- Hahn, B H -- Shaw, G M -- Popovic, M -- Salahuddin, S Z -- Wong-Staal, F -- New York, N.Y. -- Science. 1984 Aug 31;225(4665):927-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6089333" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*microbiology ; Base Sequence ; Cloning, Molecular ; Dna ; DNA, Viral ; Deltaretrovirus/classification/*genetics ; Genes ; *Genes, Viral ; Humans ; *Nucleic Acid Hybridization ; RNA, Viral ; Repetitive Sequences, Nucleic Acid
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  • 75
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-11-16
    Description: The magnetic fields associated with penicillin-induced focal epilepsy were measured in laboratory rats. Interictal magnetic spikes were similar to those previously observed in humans with focal seizure disorders. The magnetic fields of the seizure itself displayed both slow and fast phenomena, reversing in direction on opposite sides of the head.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barth, D S -- Sutherling, W -- Beatty, J -- 1-R01-NS20806-01/NS/NINDS NIH HHS/ -- 1K07NS00678-01A1/NS/NINDS NIH HHS/ -- 5-S07 RR07009/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1984 Nov 16;226(4676):855-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6436979" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Electroencephalography ; *Electromagnetic Fields ; *Electromagnetic Phenomena ; Electrophysiology ; Epilepsies, Partial/*physiopathology ; Humans ; Penicillins/pharmacology ; Rats ; Rats, Inbred Strains ; Seizures/physiopathology
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  • 76
    Publication Date: 1984-06-22
    Description: Spontaneous insulin-dependent diabetes mellitus (IDDM) in the BB rat is associated with the presence of antibodies to a 64-kilodalton rat islet cell protein. These protein antibodies appeared in young animals and remained for as long as 8 weeks before the clinical onset of IDDM. Antibodies to a 64-kilodalton human islet cell protein were found to be associated with human IDDM. Detection of the antibodies may therefore be used to predict an early immune reaction against pancreatic B cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baekkeskov, S -- Dyrberg, T -- Lernmark, A -- AM26190/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1984 Jun 22;224(4655):1348-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6374896" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoantibodies/*immunology ; Diabetes Mellitus, Experimental/*immunology ; Diabetes Mellitus, Type 1/immunology ; Humans ; Islets of Langerhans/*immunology ; Rats ; Rats, Inbred Strains ; Rats, Mutant Strains
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  • 77
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-11-18
    Description: Prokaryotic gene control signals can be isolated, compared, and characterized by precise fusion in vitro to the Escherichia coli galactokinase gene (galK), which provides both a simple assay and genetic selection. This recombinant galK fusion vector system was applied to the study of promoters and terminators recognized by the Escherichia coli RNA polymerase. Three promoters created by mutation from DNA sequences having no promoter function were characterized. Mutations that inactivate promoter function were selected, structurally defined, and functionally analyzed. Similarly, transcription termination was examined, and mutations affecting terminator function were isolated and characterized.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rosenberg, M -- Chepelinsky, A B -- McKenney, K -- New York, N.Y. -- Science. 1983 Nov 18;222(4625):734-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6356355" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA, Bacterial/*genetics ; DNA, Recombinant ; DNA-Directed RNA Polymerases/genetics ; Escherichia coli/genetics ; Galactokinase/genetics ; Gene Expression Regulation ; Mutation ; Nucleic Acid Conformation ; *Operon ; *Transcription, Genetic
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  • 78
    Publication Date: 1984-08-31
    Description: Bromodeoxyuridine (BrdUrd) treatment of the prolactin nonproducing subclone of GH cells (rat pituitary tumor cells) induces amplification of a 20-kilobase DNA fragment including all of the prolactin gene coding sequences. This amplified DNA segment, which is flanked by two unamplified regions, thus designates a unit of BrdUrd-induced amplified sequence. Cloned DNA segments, 10.3 kilobases long, from the 5' end of the rat prolactin gene of BrdUrd-responsive and -nonresponsive cells, were ligated to the thymidine kinase gene of herpes simplex virus type 1 (HSV1TK), and the hybrid DNA was transferred to thymidine kinase-deficient mouse fibroblast cells by transfection. The HSV1TK gene and the rat prolactin gene were amplified together in drug-treated transfectants carrying the hybrid DNA HSV1TK gene and rat prolactin gene of BrdUrd-responsive GH cells. These results suggest that the 10.3-kilobase DNA segment at the 5' end of the rat prolactin gene of BrdUrd-responsive GH cells carries the information for drug-induced gene amplification (amplicon) and that another gene, such as the HSV1TK gene, is also amplified when the latter is placed adjacent to this segment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Biswas, D K -- Hartigan, J A -- Pichler, M H -- CA28218/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 31;225(4665):941-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6089335" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Bromodeoxyuridine/*pharmacology ; Cell Line ; Cloning, Molecular ; DNA/*genetics ; DNA, Recombinant ; *Gene Amplification ; Genes, Viral ; Mice ; Prolactin/genetics ; Rats ; Simplexvirus/genetics ; Thymidine Kinase/genetics ; Transfection
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  • 79
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-05-06
    Description: Unusual fixation procedures revealed a series of interrelated striated organelles in type I and type II vestibular hair cells of the rat; these organelles seemed to be less well developed in cochlear hair cells. The findings suggest that contractile elements may play a role in sensory transduction in the inner ear, particularly in the vestibular system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ross, M D -- Bourne, C -- New York, N.Y. -- Science. 1983 May 6;220(4597):622-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6682246" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/physiology ; Animals ; Cell Membrane/ultrastructure ; Cytoskeleton/ultrastructure ; Hair Cells, Auditory/*ultrastructure ; Microscopy, Electron ; Organoids/ultrastructure ; Rats ; Rats, Inbred Strains
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  • 80
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-04-08
    Description: Tritiated acetylcholine was used to measure binding sites with characteristics of nicotinic cholinergic receptors in rat brain. Regulation of the binding sites in vivo was examined by administering two drugs that stimulate nicotinic receptors directly or indirectly. After 10 days of exposure to the cholinesterase inhibitor diisopropyl fluorophosphate, binding of tritiated acetylcholine in the cerebral cortex was decreased. However, after repeated administration of nicotine for 10 days, binding of tritiated acetylcholine in the cortex was increased. Saturation analysis of tritiated acetylcholine binding in the cortices of rats treated with diisopropyl fluorophosphate or nicotine indicated that the number of binding sites decreased and increased, respectively, while the affinity of the sites was unaltered.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwartz, R D -- Kellar, K J -- 507 RR05360-20/RR/NCRR NIH HHS/ -- GM07443/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Apr 8;220(4593):214-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828889" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/metabolism ; Animals ; Brain/*physiology ; Brain Chemistry/drug effects ; Cerebral Cortex/analysis/physiology ; Isoflurophate/pharmacology ; Male ; Nicotine/metabolism/pharmacology ; Rats ; Rats, Inbred Strains ; Receptors, Cholinergic/*physiology ; Receptors, Nicotinic/analysis/*physiology
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  • 81
    Publication Date: 1983-07-15
    Description: The structure of the messenger RNA (mRNA) encoding the precursor to mouse submaxillary epidermal growth factor (EGF) was determined from the sequence of a set of overlapping complementary DNA's (cDNA). The mRNA is unexpectedly large, about 4750 nucleotide bases, and predicts the sequence of preproEGF, a protein of 1217 amino acids (133,000 molecular weight). The EGF moiety (53 amino acids) is flanked by polypeptide segments of 976 and 188 amino acids at its amino and carboyxl termini, respectively. The amino terminal segment of the precursor contains seven peptides with sequences that are similar but not identical to EGF.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scott, J -- Urdea, M -- Quiroga, M -- Sanchez-Pescador, R -- Fong, N -- Selby, M -- Rutter, W J -- Bell, G I -- 21344/PHS HHS/ -- New York, N.Y. -- Science. 1983 Jul 15;221(4607):236-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6602382" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Epidermal Growth Factor/biosynthesis/*genetics ; Humans ; Male ; Mice ; RNA, Messenger/*genetics ; Submandibular Gland/metabolism
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  • 82
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-01-14
    Description: Two plasmids containing nonoverlapping deletions of the herpes simplex virus thymidine kinase gene were introduced into thymidine kinase-deficient mouse L cells by DNA-mediated gene transfer. Thymidine kinase-producing transformants were generated by a mixture of the two plasmids at a frequency significantly greater than that generated by either plasmid alone. Southern blot analyses demonstrated that functional thymidine kinase genes were generated by homologous recombination between the two deletion mutants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Small, J -- Scangos, G -- New York, N.Y. -- Science. 1983 Jan 14;219(4581):174-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6294829" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cells, Cultured ; Chromosome Deletion ; *Genetic Engineering ; Mice ; Mutation ; *Plasmids ; *Recombination, Genetic ; Simplexvirus ; Thymidine Kinase/*genetics
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  • 83
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-12-07
    Description: The genome of the small human virus serologically associated with erythrocyte aplasia and erythema infectiosum (fifth disease) is shown to be a linear, nonpermuted, single-stranded DNA molecule with self-priming hairpin termini, properties which are characteristic of the genomes of the family Parvoviridae. This human parvovirus chromosome was molecularly cloned into bacterial plasmid vectors and the cloned DNA was used to explore its relatedness to other mammalian parvovirus serotypes by DNA:DNA hybridization. It is not related to the human adeno-associated viruses but does show a distant evolutionary relationship to genomes of the helper-independent parvoviruses of rodents. This strongly suggests that it is an autonomous parvovirus, and as such is the first example of a member of this group of common animal pathogens to cause disease in man.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cotmore, S F -- Tattersall, P -- CA29303/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Dec 7;226(4679):1161-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6095448" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cloning, Molecular ; DNA, Single-Stranded/analysis ; DNA, Viral/*analysis ; DNA-Directed DNA Polymerase ; Dependovirus/genetics ; Escherichia coli/enzymology ; Nucleic Acid Denaturation ; Nucleic Acid Hybridization ; Parvoviridae/*genetics ; Plasmids ; Templates, Genetic
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  • 84
    Publication Date: 1984-11-23
    Description: A cloned complementary DNA derived from a messenger RNA transiently present at low abundance levels in early chick embryonic skeletal muscle hybridizes to a messenger RNA present at high abundance levels in cardiac muscle. Genomic DNA hybridization and nucleotide sequence identity of complementary DNA's from both heart and skeletal muscle demonstrate that the messenger RNA's from both sources are encoded by the same gene. The encoded polypeptide is a troponin T sequence which is probably a cardiac isoform. This single copy troponin T isogene is governed by different regulatory programs in heart and skeletal muscle differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cooper, T A -- Ordahl, C P -- R01-GM32018/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1984 Nov 23;226(4677):979-82.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6095446" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chick Embryo ; Chickens ; DNA Restriction Enzymes ; *Gene Expression Regulation ; *Genes ; Heart/*embryology ; Muscles/*embryology/metabolism ; Myocardium/metabolism ; Nucleic Acid Hybridization ; RNA, Messenger/genetics ; Troponin/*genetics ; Troponin T
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  • 85
    Publication Date: 1984-08-10
    Description: The gene for the circumsporozoite (CS) protein of Plasmodium falciparum has been cloned and its nucleotide sequence determined. The gene encodes a protein of 412 amino acids as deduced from the nucleotide sequence. The protein contains 41 tandem repeats of a tetrapeptide, 37 of which are Asn-Ala-Asn-Pro and four of which are Asn-Val-Asp-Pro. Monoclonal antibodies against the CS protein of Plasmodium falciparum were inhibited from binding to the protein by synthetic peptides of the repeat sequence. The CS protein of Plasmodium falciparum and the CS protein of a simian malaria parasite, Plasmodium knowlesi, have two regions of homology, one of which is present on either side of the repeat. One region contains 12 of 13 identical amino acids. Within the nucleotide sequence of this region, 25 of 27 nucleotides are conserved. The conservation of these regions in parasites widely separated in evolution suggests that they may have a function such as binding to liver cells and may represent an invariant target for immunity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dame, J B -- Williams, J L -- McCutchan, T F -- Weber, J L -- Wirtz, R A -- Hockmeyer, W T -- Maloy, W L -- Haynes, J D -- Schneider, I -- Roberts, D -- New York, N.Y. -- Science. 1984 Aug 10;225(4662):593-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6204383" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antibodies, Monoclonal/immunology ; Antigens, Surface/*genetics/immunology ; Base Sequence ; Epitopes/genetics ; *Genes ; Humans ; Liver/parasitology ; Malaria/*immunology ; Plasmodium/genetics ; Plasmodium falciparum/*genetics/immunology ; *Protozoan Proteins
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  • 86
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-05-25
    Description: The structure of this pleiotropic activator of gene transcription in bacteria and its interaction sites at promoter DNA's as well as the role of this protein in the RNA polymerase-promoter interactions are reviewed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉de Crombrugghe, B -- Busby, S -- Buc, H -- New York, N.Y. -- Science. 1984 May 25;224(4651):831-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6372090" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; Crystallography ; DNA, Bacterial/metabolism ; DNA-Directed RNA Polymerases/metabolism ; Galactose/genetics ; *Gene Expression Regulation ; Lac Operon ; Operon ; Protein Conformation ; Receptors, Cyclic AMP/*physiology ; *Transcription, Genetic
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  • 87
    Publication Date: 1984-08-03
    Description: The nucleotide sequence of a human Blym-1 transforming gene activated in a Burkitt's lymphoma cell line was determined. This sequence predicts a small protein of 58 amino acids that is 33 percent identical to the predicted product of chicken Blym-1, the activated transforming gene of chicken B cell lymphomas. Both the human and chicken Blym-1 genes exhibit significant identity to an amino-terminal region of transferrins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Diamond, A -- Devine, J M -- Cooper, G M -- CA 07250/CA/NCI NIH HHS/ -- CA 28946/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 3;225(4661):516-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6330897" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Burkitt Lymphoma/*genetics ; Cell Line ; *Cell Transformation, Neoplastic ; DNA Restriction Enzymes ; Humans ; *Oncogenes ; Structure-Activity Relationship ; Transcription, Genetic ; Transferrin/genetics
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  • 88
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-06-22
    Description: The pathophysiology of brain dysfunction was studied with an animal model of chronic alcoholism. Rats were fed a liquid diet with or without ethanol for 20 weeks and then the diet without ethanol for three more weeks. Hippocampal slices were prepared and intracellular recordings were obtained from dentate granule and CA1 cells. Significant depression of orthodromically elicited inhibitory postsynaptic potentials and postspike afterhyperpolarizations was observed in neurons from ethanol-exposed animals. No differences were observed in other active or passive membrane characteristics. These results suggest that a loss of neuronal inhibition could contribute to brain dysfunction in chronic alcoholism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Durand, D -- Carlen, P L -- New York, N.Y. -- Science. 1984 Jun 22;224(4655):1359-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6328654" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials/drug effects ; Alcoholism/physiopathology ; Animals ; Calcium/physiology ; Ethanol/*pharmacology ; Humans ; Ion Channels/drug effects ; Male ; Membrane Potentials/drug effects ; Neurons/*drug effects ; Rats ; Rats, Inbred Strains
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  • 89
    Publication Date: 1984-02-03
    Description: The nucleotide sequences of the six regions within the normal human cellular locus (c-sis) that correspond to the entire transforming region of the simian sarcoma virus (SSV) genome (v-sis) were determined. The regions are bounded by acceptor and donor splice sites and, except for region 6, resemble exons. Region 6 lacks a 3' donor splice site and terminates -5 base pairs from the 3' v-sis-helper-viral junction. This is consistent with a model proposing that SSV was generated by recombination between proviral DNA of a simian sarcoma associated virus and proto-sis and that introns were spliced out subsequently from a fused viral-sis messenger RNA. This also suggests that the 3' recombination occurred within an exon of the woolly monkey (Lagothrix) genome. The open reading frames predicting the v-sis and c-sis gene products coincide with the stop codon of c-sis located 123 nucleotides into the fifth region of homology. The overall nucleotide homology was 91 percent with substitutions mainly in the third codon positions within the open reading frame and with greatest divergence within the untranslated 3' portion of the sequences. The predicted protein products for v-sis and c-sis are 93 percent homologous. The predicted c-sis gene product is identical in 31 of 31 amino acids to one of the published sequences of platelet-derived growth factor. Thus, c-sis encodes one chain of human platelet-derived growth factor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Josephs, S F -- Guo, C -- Ratner, L -- Wong-Staal, F -- New York, N.Y. -- Science. 1984 Feb 3;223(4635):487-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6318322" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Cell Transformation, Neoplastic ; Cell Transformation, Viral ; Codon ; *Genes, Viral ; Humans ; *Oncogenes ; Platelet-Derived Growth Factor/*genetics ; RNA Splicing ; RNA, Messenger/genetics ; Recombination, Genetic ; Retroviridae/*genetics ; Sarcoma Virus, Woolly Monkey/*genetics ; Viral Proteins/genetics
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  • 90
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-01-20
    Description: Peptide synthesis can be used for elucidating the roles of secondary structures in the specificity of hormones, antigens, and toxins. Intermediate sized peptides with these activities assume amphiphilic secondary structures in the presence of membranes. When models are designed to optimize the amphiphilicity of the secondary structure, stronger interactions can be observed with the synthetic peptides than with the naturally occurring analogs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, E T -- Kezdy, F J -- HL-18577/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1984 Jan 20;223(4633):249-55.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6322295" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Apolipoprotein A-I ; Apolipoproteins ; Binding Sites ; Calcitonin ; Chemical Phenomena ; Chemistry ; Corticotropin-Releasing Hormone ; Endorphins ; Glucagon ; Growth Hormone-Releasing Hormone ; *Hormones/pharmacology ; Lipoproteins, HDL ; Melitten ; Models, Structural ; *Peptides/chemical synthesis/metabolism/pharmacology ; Protein Conformation ; Structure-Activity Relationship ; beta-Endorphin
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  • 91
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-12-14
    Description: A human papovavirus, JCV, is the etiologic agent of the fatal demyelinating disease, progressive multifocal leukoencephalopathy. The JCV 98-base-pair tandem repeats, located to the late side of the viral replication origin, were shown to be a transcriptional regulatory element with enhancer-like activity in human fetal glial cells. These tandem repeats share significant homology with the 82-nucleotide rat brain-specific identifier RNA sequence.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kenney, S -- Natarajan, V -- Strike, D -- Khoury, G -- Salzman, N P -- New York, N.Y. -- Science. 1984 Dec 14;226(4680):1337-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6095453" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Brain/*microbiology ; Fetus ; Gene Amplification ; Gene Expression Regulation ; Genes, Viral ; Humans ; JC Virus/*genetics ; Neuroglia/microbiology ; *Operon ; Polyomavirus/*genetics
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  • 92
    Publication Date: 1984-08-03
    Description: Grafts of fetal septal tissue rich in cholinergic neurons were implanted as a dissociated cell suspension into the depth of the hippocampal formation in aged rats with severe impairments in spatial learning abilities. After 2 1/2 to 3 months, the rats with grafts, but not the controls, had improved their performance in a spatial learning test. Their improvement was due, at least in part, to an increased ability to use spatial cues in the task. In all animals the grafts had produced an extensive acetylcholinesterase-positive terminal network in the surrounding host hippocampal formation. Thus, the action of cholinergic neurons in the graft onto elements in the host hippocampal circuitry may be a necessary, but perhaps not sufficient, prerequisite for the observed functional recovery.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gage, F H -- Bjorklund, A -- Stenevi, U -- Dunnett, S B -- Kelly, P A -- AG 03766/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 3;225(4661):533-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6539949" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Disease Models, Animal ; Female ; Fetus ; Hippocampus/embryology/growth & development/*transplantation ; Humans ; *Learning ; Memory Disorders/*physiopathology ; Rats ; Rats, Inbred Strains
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  • 93
    Publication Date: 1984-11-02
    Description: Smooth muscle cells with 4C (double diploid) DNA content have been found in major arteries. The proportion of 4C cells increases with normal aging and with hypertension. These cells may represent a state of arrest at the G2 phase of the cell cycle or may be examples of true tetraploidy. Flow cytometric cell sorting was used to isolate 4C smooth muscle cells from the rat aorta, and the cells were cultured. Flow cytometry, Feulgen microdensitometry, and karyotyping of the progeny of the 4C cells established the presence of true tetraploid cells. These findings demonstrate the presence of reproductively viable tetraploid cells in a normal mammalian tissue.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldberg, I D -- Rosen, E M -- Shapiro, H M -- Zoller, L C -- Myrick, K -- Levenson, S E -- Christenson, L -- 5-P01-CA-12662/CA/NCI NIH HHS/ -- AG00599/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1984 Nov 2;226(4674):559-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6494901" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aorta, Thoracic/analysis/*cytology ; Cells, Cultured ; DNA/analysis ; Flow Cytometry ; Humans ; Karyotyping ; Muscle, Smooth, Vascular/analysis/*cytology ; *Polyploidy ; Rats ; Rats, Inbred Strains
    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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  • 94
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-05-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G -- New York, N.Y. -- Science. 1984 May 11;224(4649):588-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6369540" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chickens ; DNA, Neoplasm/genetics ; *Gene Expression Regulation ; Globins/genetics ; Insulin/genetics
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 95
    Publication Date: 1984-10-05
    Description: Antibodies in sera from patients with adult T-cell leukemia-lymphoma or from healthy carriers of type I human T-cell leukemia virus (HTLV) recognize an antigen of approximately 42 kilodaltons (p42) in cell lines infected with HTLV-I. Radiolabel sequence analysis of cyanogen bromide fragments of p42 led to the conclusion that this antigen is encoded in part by LOR, a conserved portion of the "X" region that is flanked by the envelope gene and the 3' long terminal repeat of HTLV-I. It is possible that this novel product mediates the unique transformation properties of the HTLV family.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, T H -- Coligan, J E -- Sodroski, J G -- Haseltine, W A -- Salahuddin, S Z -- Wong-Staal, F -- Gallo, R C -- Essex, M -- 2-T32-CA0903/CA/NCI NIH HHS/ -- CA07094/CA/NCI NIH HHS/ -- CA13885/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1984 Oct 5;226(4670):57-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6089350" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antigens, Viral/*genetics ; Base Sequence ; Cell Line ; Cyanogen Bromide ; Deltaretrovirus/*genetics/immunology ; *Genes, Viral ; Humans ; Peptide Fragments ; Trans-Activators ; Viral Proteins/*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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  • 96
    Publication Date: 1984-08-17
    Description: Leukotriene B4, at the same intracutaneous doses as bradykinin, reduced the nociceptive threshold in the rat paw. The mechanism of leukotriene B4-induced hyperalgesia was distinguished from that of the hyperalgesia elicited by prostaglandin E2 and bradykinin by its dependence on polymorphonuclear leukocytes and independence of the cyclooxygenation of arachidonic acid.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levine, J D -- Lau, W -- Kwiat, G -- Goetzl, E J -- AM 32634/AM/NIADDK NIH HHS/ -- DE 05369/DE/NIDCR NIH HHS/ -- HL 31809/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1984 Aug 17;225(4663):743-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6087456" target="_blank"〉PubMed〈/a〉
    Keywords: Analgesics/*pharmacology ; Animals ; Bradykinin/pharmacology ; Dinoprostone ; Indomethacin/pharmacology ; Leukotriene B4/analogs & derivatives/*pharmacology ; Male ; Neutrophils/*drug effects/physiology ; Prostaglandin-Endoperoxide Synthases/metabolism ; Prostaglandins E/pharmacology ; Rats ; Rats, Inbred Strains ; SRS-A/pharmacology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 97
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-03-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1984 Mar 30;223(4643):1379-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6701527" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Computers ; DNA/genetics ; *Molecular Biology ; National Institutes of Health (U.S.) ; United States
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 98
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1984 Jan 20;223(4633):266-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6199840" target="_blank"〉PubMed〈/a〉
    Keywords: Bacillus subtilis/*enzymology ; Bacterial Proteins/metabolism ; Base Sequence ; Catalysis ; Endoribonucleases/analysis/*metabolism ; Escherichia coli/*enzymology ; *Escherichia coli Proteins ; Nucleic Acid Conformation ; Nucleic Acid Precursors/metabolism ; RNA/metabolism ; RNA Precursors ; RNA, Bacterial/*metabolism ; RNA, Transfer/metabolism ; Ribonuclease P
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 99
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-07-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1984 Jul 20;225(4659):301.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6740311" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *RNA Splicing ; RNA, Messenger/metabolism ; RNA, Transfer/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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  • 100
    Publication Date: 1984-05-25
    Description: In order to further define the mechanisms by which polypeptide growth factors regulate gene transcription and cellular growth, expression cloning techniques were used to select human epidermal growth factor (EGF) receptor complementary DNA clones. The EGF 3' coding domain shows striking homology to the transforming gene product of avian erythroblastosis virus (v-erbB). Over-expression of EGF receptors in A431 cell lines correlates with increased EGF receptor mRNA levels and amplification (up to 110 times) of the apparently singular EGF receptor gene. There appear to be three cytoplasmic polyadenylated RNA products of EGF receptor gene expression in A431 cells, one of which contains only 5' (EGF binding domain) sequences and is postulated to encode the secreted EGF receptor-related protein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lin, C R -- Chen, W S -- Kruiger, W -- Stolarsky, L S -- Weber, W -- Evans, R M -- Verma, I M -- Gill, G N -- Rosenfeld, M G -- New York, N.Y. -- Science. 1984 May 25;224(4651):843-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6326261" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cell Line ; Cloning, Molecular ; DNA/*genetics ; Gene Amplification ; Gene Expression Regulation ; Polymorphism, Genetic ; RNA, Messenger/genetics ; Receptor, Epidermal Growth Factor ; Receptors, Cell Surface/*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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