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  • Amino Acid Sequence  (32)
  • American Association for the Advancement of Science (AAAS)  (32)
  • American Institute of Physics
  • 1980-1984  (32)
  • 1925-1929
  • 1983  (19)
  • 1982  (13)
  • 1927
  • 1926
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (32)
  • American Institute of Physics
Years
  • 1980-1984  (32)
  • 1925-1929
Year
  • 1
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    alpha A-crystallin messenger RNA of the mouse lens: more noncoding than coding sequences (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    Complete amino acid sequence of urotensin I, a hypotensive and corticotropin-releasing neuropeptide from Catostomus (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    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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  • 3
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    Somatic mutation in genes for the variable portion of the immunoglobulin heavy chain (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    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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  • 4
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    Neuronal cell Thy-1 glycoprotein: homology with immunoglobulin (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
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  • 5
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    Human platelet-derived growth factor (PDGF): amino-terminal amino acid sequence (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    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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  • 6
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    Splice junctions: association with variation in protein structure (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    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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  • 7
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    A parathyroid hormone inhibitor in vivo: design and biological evaluation of a hormone analog (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
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  • 8
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    Requirement for signal peptide cleavage of Escherichia coli prolipoprotein (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    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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  • 9
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    Monoclonal antibodies reveal the structural basis of antibody diversity (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    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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  • 10
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    Rabies virus glycoprotein analogs: biosynthesis in Escherichia coli (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    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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  • 11
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    Structure of a mouse submaxillary messenger RNA encoding epidermal growth factor and seven related proteins (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    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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  • 12
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    Separation of signal transduction and adaptation functions of the aspartate receptor in bacterial sensing (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-06-03
    Description: In order to investigate the functions of stimulus recognition, signal transduction, and adaptation, the aspartate receptor gene for bacterial chemotaxis in Salmonella typhimurium has been sequenced and modified. A carboxyl-terminal truncated receptor was shown to bind aspartate and to transmit a signal to change motility behavior. However, the truncated receptor showed greatly reduced methyl-accepting capacity, and did not allow adaptation to the sensory stimulation. The separation of receptor functions by alteration of primary structure emphasizes that the receptor is directly involved in adaptation and is not solely a device for transmitting a signal across a membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Russo, A F -- Koshland, D E Jr -- New York, N.Y. -- Science. 1983 Jun 3;220(4601):1016-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6302843" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Amino Acid Sequence ; Aspartic Acid ; *Bacterial Physiological Phenomena ; Base Sequence ; *Chemotaxis ; Escherichia coli/physiology ; Methylation ; *Receptors, Amino Acid ; Receptors, Cell Surface/genetics/*physiology ; Salmonella typhimurium/physiology ; Serine
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  • 13
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    DNA-binding proteins (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-09-09
    Description: The structures of three proteins that regulate gene expression have been determined recently and suggest how these proteins may bind to their specific recognition sites on the DNA. One protein (Cro) is a repressor of gene expression, the second (CAP) usually stimulates gene expression, and the third (lambda repressor) can act as either a repressor or an activator. The three proteins contain a substructure consisting of two consecutive alpha helices that is virtually identical in each case. Structural and amino acid sequence comparisons suggest that this bihelical fold occurs in a number of proteins that regulate gene expression, and is an intrinsic part of the DNA-protein recognition event. The modes of repression and activation by Cro and lambda repressor are understood reasonably well, but the mode of action of CAP is still unclear.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takeda, Y -- Ohlendorf, D H -- Anderson, W F -- Matthews, B W -- GM20066/GM/NIGMS NIH HHS/ -- GM28138/GM/NIGMS NIH HHS/ -- GM30894/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 9;221(4615):1020-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6308768" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Chemical Phenomena ; Chemistry ; *DNA Helicases ; DNA-Binding Proteins ; Escherichia coli/genetics ; Gene Expression Regulation ; Models, Chemical ; Protein Conformation
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  • 14
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    Hemoglobin Parchman: double crossover within a single human gene (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-10-15
    Description: Structural analysis of a new variant hemoglobin revealed tryptic peptides with the amino acid composition of normal delta-globin, except for two internal peptides, which had the compositions of normal beta-globin. The most likely explanation for these findings is that a double, nonhomologous crossover between the delta-and beta-globin genes had occurred.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adams, J G 3rd -- Morrison, W T -- Steinberg, M H -- New York, N.Y. -- Science. 1982 Oct 15;218(4569):291-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123235" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Crossing Over, Genetic ; Globins/genetics ; Hemoglobins, Abnormal/*genetics ; Humans
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  • 15
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    Mammalian muscle acetylcholine receptor: a supramolecular structure formed by four related proteins (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-12-17
    Description: The nicotinic acetylcholine receptor has been purified from fetal calf muscle. Amino terminal amino acid sequence data indicate that the mammalian receptor is formed from closely related but distinct subunits. A cytoskeletal component, actin, may be associated with the receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Conti-Tronconi, B M -- Gotti, C M -- Hunkapiller, M W -- Raftery, M A -- GM-06965/GM/NIGMS NIH HHS/ -- NS-10294/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Dec 17;218(4578):1227-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7146904" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/isolation & purification ; Amino Acid Sequence ; Animals ; Cattle ; Macromolecular Substances ; Molecular Weight ; Receptors, Cholinergic/*isolation & purification
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  • 16
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    Nucleotide sequence of the p21 transforming protein of Harvey murine sarcoma virus (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-09-03
    Description: Harvey murine sarcoma virus is a retrovirus which transforms cells by means of a single virally encoded protein called p21 has. We have determined the nucleotide sequence of 1.0 kilobase in the 5' half of the viral genome which encompasses the has coding sequences and its associated regulatory signals. The nucleotide sequence has identified the amino acid sequence of two additional overlapping polypeptides which share their reading frames and the carboxyl termini with p21 but which contain additional NH2-terminal amino acids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dhar, R -- Ellis, R W -- Shih, T Y -- Oroszlan, S -- Shapiro, B -- Maizel, J -- Lowy, D -- Scolnick, E -- New York, N.Y. -- Science. 1982 Sep 3;217(4563):934-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6287572" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Transformation, Viral ; Cells, Cultured ; Defective Viruses/*genetics ; Genes, Viral ; Oncogene Protein p21(ras) ; Peptide Fragments ; Protein Biosynthesis ; Protein Conformation ; RNA, Viral/genetics ; Sarcoma Viruses, Murine/*genetics ; Viral Proteins/analysis/*genetics
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  • 17
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    Rat pro-opiomelanocortin contains sulfate (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-07-02
    Description: Intermediate lobes isolated from rat pituitary glands incorporated [35S]sulfate into pro-opiomelanocortin and other adrenocorticotropic hormone-containing peptides. Incubation of intermediate lobes in medium containing the arginine analog canavanine inhibited the cleavage of pro-opiomelanocortin into smaller products. Pro-opiomelanocortin that accumulated in the presence of canavanine was also sulfated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoshina, H -- Hortin, G -- Boime, I -- New York, N.Y. -- Science. 1982 Jul 2;217(4554):63-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6283633" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenocorticotropic Hormone/*biosynthesis ; Amino Acid Sequence ; Animals ; In Vitro Techniques ; Kinetics ; Leucine ; Pituitary Gland/*metabolism ; Pituitary Hormones, Anterior/*biosynthesis ; Pro-Opiomelanocortin ; Protein Precursors/*biosynthesis ; Radioisotope Dilution Technique ; Rats ; Sulfur Radioisotopes ; Sulfuric Acids/*metabolism ; Tritium
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  • 18
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    DNA sequence of a gene encoding a BALB/c mouse Ld transplantation antigen (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-02-05
    Description: The sequence of a gene, denoted 27.5, encoding a transplantation antigen for the BALB/c mouse has been determined. Gene transfer studies and comparison of the translated sequence with the partial amino acid sequence of the Ld transplantation antigen establish that gene 27.5 encodes an Ld polypeptide. A comparison of the gene 27.5 sequence with several complementary DNA sequences suggests that the BALB/c mouse may contain a number of closely related L-like genes. Gene 27.5 has eight exons that correlate with the structural domains of the transplantation antigen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moore, K W -- Sher, B T -- Sun, Y H -- Eakle, K A -- Hood, L -- 1 T32 GM07616/GM/NIGMS NIH HHS/ -- GM 06965/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1982 Feb 5;215(4533):679-82.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7058332" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cloning, Molecular/methods ; Genes ; H-2 Antigens/*genetics ; *Major Histocompatibility Complex ; Mice ; Mice, Inbred BALB C/*genetics ; Plasmids ; Repetitive Sequences, Nucleic Acid
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  • 19
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    Nonopiate effects of dynorphin and des-Tyr-dynorphin (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-12-10
    Description: Intracerebroventricular administration of dynorphin produced potent and long-lasting effects on motor function and the electroencephalogram in rats. In addition, local iontophoretic or pressure ejection of dynorphin consistently inhibited hippocampal unit activity. None of these effects were significantly affected by naloxone even at high doses. Moreover, a fragment of dynorphin that failed to displace any of a number of tritiated narcotics from rat brain homogenates produced similar effects on these physiological measures in vivo. On the basis of a variety of criteria for "opiate action," the results suggest that a second biologically active site within the dynorphin sequence is capable of quite potent but nonopiate effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walker, J M -- Moises, H C -- Coy, D H -- Baldrighi, G -- Akil, H -- 1F32DA04183/DA/NIDA NIH HHS/ -- DA02265/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1982 Dec 10;218(4577):1136-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6128791" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Amino Acid Sequence ; Animals ; Dynorphins ; Endorphins/*physiology ; Hippocampus/*physiology ; Male ; Pain/*physiopathology ; Rats ; Structure-Activity Relationship
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  • 20
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    Herpes simplex virus type-1 glycoprotein D gene: nucleotide sequence and expression in Escherichia coli (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-10-22
    Description: The protein coding region of the herpes simplex virus type-1 glycoprotein D (gD) gene was mapped, and the nucleotide sequence was determined. The predicted amino acid sequence of the gD polypeptide was found to contain a number of features in common with other virus glycoproteins. Insertion of this protein coding region into a bacterial expressor plasmid enabled synthesis in Escherichia coli of an immunoreactive gD-related polypeptide. The potential of this system for preparation of a type-common herpes simplex virus vaccine is discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, R J -- Weis, J H -- Salstrom, J S -- Enquist, L W -- New York, N.Y. -- Science. 1982 Oct 22;218(4570):381-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6289440" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antigens, Viral/genetics ; Base Sequence ; Escherichia coli/genetics ; Gene Expression Regulation ; Genes ; Genes, Viral ; Glycoproteins/*genetics ; Peptides/genetics ; Protein Sorting Signals ; Simplexvirus/*genetics ; Viral Proteins/*genetics/immunology ; Viral Vaccines
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 21
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    The carboxy terminus of the precursor to vasopressin and neurophysin: immunocytochemistry in rat brain (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-08-27
    Description: A pituitary glycopeptide whose amino acid sequence was previously identified has now been recognized as the final portion of the precursor to arginine vasopressin and its associated neurophysin. Immunocytochemical techniques with antiserums against this 39 amino acid peptide and vasopressin were used to study their distribution in the rat central nervous system. The peptide is located in vasopressin-synthesizing cells in the neurosecretory magnocellular nuclei. Positively stained fibers project from the magnocellular nuclei through the median eminence to the posterior pituitary. Studies of the homozygous Brattleboro rat, which is known to be deficient in the production of vasopressin and its related neurophysin, also show the absence of immunoreactivity to this peptide. These immunocytochemical data strongly indicate that the peptide is synthesized with vasopressin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, S J -- Seidah, N G -- Chretien, M -- DA00154/DA/NIDA NIH HHS/ -- DA02265/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 27;217(4562):853-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6125034" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Arginine Vasopressin/*metabolism ; Brain/*metabolism ; Dynorphins ; Endorphins/metabolism ; Hypothalamus/metabolism ; Male ; Neurophysins/*metabolism ; Peptide Fragments ; Pituitary Gland, Posterior/metabolism ; Protein Precursors/analysis/*metabolism ; Rats ; Rats, Inbred Strains
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  • 22
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    A major metabolite of arginine vasopressin in the brain is a highly potent neuropeptide (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-09-23
    Description: A peptide that accumulated as the major product during the proteolysis of arginine vasopressin by rat brain synaptic membranes was isolated and its structure was shown to be the hexapeptide pGlu-Asn-Cys(Cys)-Pro-Arg-Gly-NH2. When administered intracerebroventricularly in extremely low doses, this vasopressin fragment and its desglycinamide derivative facilitated memory consolidation in a passive avoidance situation. These vasopressin metabolites, which are devoid of pressor activity, constitute highly potent neuropeptides with selective effects on memory and related processes; they are activated via proteolytic processing of vasopressin by brain peptidases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burbach, J P -- Kovacs, G L -- de Wied, D -- van Nispen, J W -- Greven, H M -- New York, N.Y. -- Science. 1983 Sep 23;221(4617):1310-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6351252" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Arginine Vasopressin/*metabolism/physiology ; Avoidance Learning/physiology ; Brain/*metabolism ; Dose-Response Relationship, Drug ; Male ; Memory/*physiology ; Oligopeptides/metabolism ; Peptide Hydrolases/metabolism ; Rats ; Structure-Activity Relationship
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  • 23
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    Murine I-A beta chain polymorphism: nucleotide sequences of three allelic I-A beta genes (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-07-15
    Description: The polymorphism of immune response genes plays a critical role in determining the immune capabilities of a particular individual. The molecular nature of this polymorphism was studied by examining the structure of the coding portions of three alleles of the I-A beta chain gene, an immune response gene whose protein product constitutes a subunit of the I-A molecule. Comparison of the I-A beta chains encoded by these alleles revealed an amino acid sequence divergence of 5 to 8 percent. The differences were found to be a series of short alterations clustered in the amino terminal half of the polypeptide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Choi, E -- McIntyre, K -- Germain, R N -- Seidman, J G -- AI18436/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 15;221(4607):283-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6407114" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; Animals ; Base Sequence ; *Genes, MHC Class II ; Histocompatibility Antigens Class II/immunology ; Humans ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; *Polymorphism, Genetic
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  • 24
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    Expression of a platelet-derived growth factor-like protein in simian sarcoma virus transformed cells (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-09-30
    Description: The near identity of the partial amino acid sequence of human platelet-derived growth factor (PDGF) and that predicted for p28sis, the putative transforming protein of the simian sarcoma virus (SSV), suggests expression of a growth factor activity may be central for transformation by SSV. It is now reported that SSV-transformed cells but not control cells contain a growth factor activity that is identical to PDGF in immunoassay, in mitogenic dose response, and in specific mitogenic activity. The protein immunoprecipitated by antiserum to human PDGF has an apparent molecular weight of 20,000, identical to that of p20sis, the putative intracellular degradation product of p28sis. The results support the concept that expression of a PDGF-like molecule, which appears to be the product of the viral-sis gene, is responsible for the abnormal regulation of growth is SSV-transformed cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Deuel, T F -- Huang, J S -- Huang, S S -- Stroobant, P -- Waterfield, M D -- New York, N.Y. -- Science. 1983 Sep 30;221(4618):1348-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6310754" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Cell Transformation, Viral ; Cross Reactions ; DNA Replication/drug effects ; *Genes, Viral ; Growth Substances/*genetics/immunology ; Mice ; Molecular Weight ; Peptides/*genetics/immunology ; Platelet-Derived Growth Factor ; Retroviridae/*genetics ; Sarcoma Virus, Woolly Monkey/*genetics ; Sarcoma, Experimental/*physiopathology
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  • 25
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    Angiotensinogen is related to the antitrypsin-antithrombin-ovalbumin family (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-10-28
    Description: The recently reported amino acid sequence of rat angiotensinogen was subjected to a computer-assisted search for homology with known sequences stored in a data bank and found to be significantly related to that of plasma alpha 1-antitrypsin, itself a member of a family that includes antithrombin III and ovalbumin. An alignment of the four sequences shows indisputably the common ancestry of all four proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Doolittle, R F -- RR 00757/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1983 Oct 28;222(4622):417-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6604942" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Angiotensinogen/*genetics ; Angiotensins/*genetics ; Animals ; Antithrombins/genetics ; *Biological Evolution ; Macromolecular Substances ; Ovalbumin/genetics ; Rats ; alpha 1-Antitrypsin/genetics
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  • 26
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    Growth hormone-releasing factor from a human pancreatic tumor that caused acromegaly (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-11-05
    Description: A 44 amino acid peptide with growth hormone-releasing activity has been isolated from a human tumor of the pancreas that had caused acromegaly. The primary structure of the tumor-derived peptide is H-Tyr-Ala-Asp-Ala-Ile-Phe-Thr-Asn-Ser-Tyr-Arg-Lys-Val-Leu-Gly-Gln-Leu-Ser-Ala- Arg-Lys-Leu-Leu-Gln-Asp-Ile-Met-Ser-Arg-Gln-Gln-Gly-Glu-Ser-Asn-Gln-Glu-Arg-Gly -Ala-Arg-Ala-Arg-Leu-NH2. The synthetic replicate has full biological activity in vitro and in vivo specifically to stimulate the secretion of immunoreactive growth hormone. The tumor-derived peptide is identical in biological activity and similar in physiochemical properties to the still uncharacterized growth hormone-releasing factor present in extracts of hypothalamic tissues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guillemin, R -- Brazeau, P -- Bohlen, P -- Esch, F -- Ling, N -- Wehrenberg, W B -- AM-18811/AM/NIADDK NIH HHS/ -- HD-09690/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1982 Nov 5;218(4572):585-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6812220" target="_blank"〉PubMed〈/a〉
    Keywords: Acromegaly/*physiopathology ; Amino Acid Sequence ; Biological Assay ; Growth Hormone-Releasing Hormone/chemical synthesis/*isolation & purification ; Hormones, Ectopic/*isolation & purification ; Humans ; Pancreatic Neoplasms/*chemistry
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  • 27
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    Nucleotide sequence of the Rasheed rat sarcoma virus oncogene: new mutations (1983)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1983-07-08
    Description: The nucleotide sequence of the oncogene of the Rasheed strain of rat sarcoma virus was determined. The oncogene (Ra-v-ras) encodes a 29,000-dalton (p29) transforming protein. This protein is distinct from the immunologically related 21,000-dalton protein (p21) of the Harvey murine sarcoma virus in its amino terminus and in having additional mutations in its carboxyl terminus. Although the functional significance of these changes is unknown, they appear to occur only in rat sarcoma virus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rasheed, S -- Norman, G L -- Heidecker, G -- CA 27246/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 8;221(4606):155-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6344220" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Mice ; Neoplasm Proteins/genetics ; *Oncogenes ; Proto-Oncogene Proteins p21(ras) ; Rats ; Retroviridae/*genetics
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  • 28
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    Nucleotide sequence analysis of the T24 human bladder carcinoma oncogene (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-06-03
    Description: The nucleotide sequence of the T24 human bladder carcinoma oncogene was determined, and the coding and noncoding sequences of the genome were identified. The amino acid sequence of p21, the translational product of the T24 oncogene, was predicted from the nucleotide sequence of the oncogene. Comparison of this sequence with that of the normal cellular homolog showed that a single point mutation in the coding sequences of the T24 oncogene resulted in the acquisition of transforming properties. Other differences between the T24 oncogene and its normal cellular homolog were found in the 5' noncoding and 3' noncoding sequences, but these differences appear to be due to polymorphism and do not play a significant role in the transformation process.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reddy, E P -- New York, N.Y. -- Science. 1983 Jun 3;220(4601):1061-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6844927" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Carcinoma/*genetics ; Cell Transformation, Neoplastic/metabolism ; Humans ; Mice ; Neoplasm Proteins/genetics ; *Oncogenes ; Oncogenic Viruses/genetics ; Rats ; Urinary Bladder Neoplasms/*genetics
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  • 29
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    Ectopic pro-opiolipomelanocortin: sequence of cDNA coding for beta-melanocyte-stimulating hormone and beta-endorphin (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-05-13
    Description: A recombinant bacterial plasmid, pMS1, was constructed that contains 318 nucleotides complementary to a portion of pro-opiolipomelanocortin (proOLMC) messenger RNA from an ectopic adrenocorticotropin-producing tumor. The cloned complementary DNA insert, which contains the sequence that codes for all of the beta-melanocyte-stimulating hormone and beta-endorphin portions of proOLMC, as well as the 3' nontranslated section, is identical to the genomic sequence. Hybridization of tumor proOLMC complementary DNA to RNA subjected to electrophoresis and transferred to a nitrocellulose filter revealed two proOLMC messenger RNA species in the tumor polyadenylated RNA, but only one in pituitary polyadenylated RNA. At least one of the tumor proOLMC messenger RNA's is similar, if not identical, to human pituitary proOLMC messenger RNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DeBold, C R -- Schworer, M E -- Connor, T B -- Bird, R E -- Orth, D N -- 2-R01-GM25526/GM/NIGMS NIH HHS/ -- 5-R01-CA11685/CA/NCI NIH HHS/ -- 5-R25-CA19429/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 May 13;220(4598):721-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6301015" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Carcinoid Tumor/physiopathology ; Cloning, Molecular ; DNA, Neoplasm/genetics ; DNA, Recombinant/*metabolism ; Endorphins/*genetics ; Hormones, Ectopic/*genetics ; Humans ; Male ; Melanocyte-Stimulating Hormones/*genetics ; Middle Aged ; Pancreatic Neoplasms/physiopathology ; Pituitary Hormones, Anterior/*genetics ; Pro-Opiomelanocortin ; Protein Precursors/*genetics ; RNA, Messenger/genetics ; beta-Endorphin
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  • 30
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    Simian sarcoma virus onc gene, v-sis, is derived from the gene (or genes) encoding a platelet-derived growth factor (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-07-15
    Description: The transforming protein of a primate sarcoma virus and a platelet-derived growth factor are derived from the same or closely related cellular genes. This conclusion is based on the demonstration of extensive sequence similarity between the transforming protein derived from the simian sarcoma virus onc gene, v-sis, and a human platelet-derived growth factor. The mechanism by which v-sis transforms cells could involve the constitutive expression of a protein with functions similar or identical to those of a factor active transiently during normal cell growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Doolittle, R F -- Hunkapiller, M W -- Hood, L E -- Devare, S G -- Robbins, K C -- Aaronson, S A -- Antoniades, H N -- CA30101/CA/NCI NIH HHS/ -- RR00757/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 15;221(4607):275-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6304883" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cebidae ; Cell Transformation, Neoplastic/metabolism ; Genes ; Growth Substances/*genetics/physiology ; Humans ; *Oncogenes ; Peptides/*genetics/physiology ; Platelet-Derived Growth Factor ; Retroviridae/*genetics ; Sarcoma Virus, Woolly Monkey/*genetics
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  • 31
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    Cloning the acetylcholine receptor genes (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-03-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1983 Mar 4;219(4588):1055-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6823566" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cloning, Molecular ; Genes ; Receptors, Cholinergic/*genetics ; Torpedo
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 32
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    Directed mutagenesis of dihydrofolate reductase (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-11-18
    Description: Three mutations of the enzyme dihydrofolate reductase were constructed by oligonucleotide-directed mutagenesis of the cloned Escherichia coli gene. The mutations--at residue 27, aspartic acid replaced with asparagine; at residue 39, proline replaced with cysteine; and at residue 95, glycine replaced with alanine--were designed to answer questions about the relations between molecular structure and function that were raised by the x-ray crystal structures. Properties of the mutant proteins show that Asp-27 is important for catalysis and that perturbation of the local structure at a conserved cis peptide bond following Gly-95 abolishes activity. Substitution of cysteine for proline at residue 39 results in the appearance of new forms of the enzyme that correspond to various oxidation states of the cysteine. One of these forms probably represents a species cross-linked by an intrachain disulfide bridge between the cysteine at position 85 and the new cysteine at position 39.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Villafranca, J E -- Howell, E E -- Voet, D H -- Strobel, M S -- Ogden, R C -- Abelson, J N -- Kraut, J -- CA17374/CA/NCI NIH HHS/ -- F32 GM09375/GM/NIGMS NIH HHS/ -- GM10928/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Nov 18;222(4625):782-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6356360" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Disulfides ; Escherichia coli/genetics ; Gene Expression Regulation ; Genes ; Genes, Bacterial ; *Mutation ; Structure-Activity Relationship ; Tetrahydrofolate Dehydrogenase/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
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