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  • Articles  (119)
  • Latest Papers from Table of Contents or Articles in Press  (119)
  • Base Sequence  (86)
  • Cells, Cultured  (36)
  • 1995-1999
  • 1985-1989  (119)
  • 1950-1954
  • 1945-1949
  • 1985  (119)
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  • Articles  (119)
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  • Latest Papers from Table of Contents or Articles in Press  (119)
Years
  • 1995-1999
  • 1985-1989  (119)
  • 1950-1954
  • 1945-1949
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  • 1
    Publication Date: 1985-05-31
    Description: Antibodies from the serum of patients with the acquired immune deficiency syndrome (AIDS) or with the AIDS-related complex and from the serum of seropositive healthy homosexuals, recognize two major glycoproteins in cells infected with human T-cell lymphotropic virus type III (HTLV III). These glycoproteins, gp160 and gp120, are encoded by the 2.5-kilobase open reading frame located in the 3' end of the HTLV-III genome, as determined by amino terminus sequence analysis of the radiolabeled forms of these proteins. It is hypothesized that gp160 and gp120 represent the major species of virus-encoded envelope gene products for HTLV-III.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Allan, J S -- Coligan, J E -- Barin, F -- McLane, M F -- Sodroski, J G -- Rosen, C A -- Haseltine, W A -- Lee, T H -- Essex, M -- 2T32-CA09031/CA/NCI NIH HHS/ -- CA 13885/CA/NCI NIH HHS/ -- CA 37466/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 May 31;228(4703):1091-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2986290" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*immunology ; Amino Acid Sequence ; Antibodies, Viral/immunology ; Antigens, Viral/genetics/*immunology ; Base Sequence ; Deltaretrovirus/*immunology ; Genes, Viral ; Glycoproteins/genetics/immunology ; Humans ; Molecular Weight ; Tunicamycin/pharmacology ; Viral Envelope Proteins/genetics/*immunology
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  • 2
    Publication Date: 1985-09-13
    Description: As a consequence of alternative RNA processing events, a single rat gene can generate messenger RNA's (mRNA's) encoding either calcitonin or a neuropeptide referred to as alpha-type calcitonin gene-related peptide (alpha-CGRP). An mRNA product of a related gene has been identified in rat brain and thyroid encoding the protein precursor of a peptide differing from alpha-CGRP by only a single amino acid. The RNA encoding this peptide, which is referred to as beta-CGRP, appears to be the only mature transcript of the beta-CGRP gene. Hybridization histochemistry reveals a similar distribution of alpha- and beta-CGRP mRNA's, but their relative levels of expression vary in different cranial nerve nuclei. Thus beta-CGRP is a new member of a family of related genes with potential functions in regulating the transduction of sensory and motor information.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Amara, S G -- Arriza, J L -- Leff, S E -- Swanson, L W -- Evans, R M -- Rosenfeld, M G -- New York, N.Y. -- Science. 1985 Sep 13;229(4718):1094-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2994212" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Brain Chemistry ; Calcitonin Gene-Related Peptide ; DNA/analysis ; DNA Restriction Enzymes/metabolism ; Gene Expression Regulation ; Nerve Tissue Proteins/*genetics ; RNA, Messenger/*analysis ; Rats
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  • 3
    Publication Date: 1985-10-18
    Description: Developments in microscope, sensor, and image-processing technologies have led to integrated systems for the quantification of low-light-level emission signals from biological samples. Specificity is provided in the form of monoclonal antibodies and other ligands or enzyme substrates conjugated with efficient fluorophores. Fluorescent probes are also available for cellular macromolecular constituents and for free ions of biological interest such as H+ and Ca2+. The entire spectrum of photophysical phenomena can be exploited. Representative data are presented from studies of DNA conformation and architecture in polytene chromosomes and from studies of receptor-mediated endocytosis, calcium distribution, and the organization of the contractile apparatus in muscle cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arndt-Jovin, D J -- Robert-Nicoud, M -- Kaufman, S J -- Jovin, T M -- FO6 TWOO960/TW/FIC NIH HHS/ -- New York, N.Y. -- Science. 1985 Oct 18;230(4723):247-56.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4048934" target="_blank"〉PubMed〈/a〉
    Keywords: Analog-Digital Conversion ; Animals ; Cell Cycle ; Cells/*cytology ; Cells, Cultured ; Chromosomes/ultrastructure ; Drosophila ; Fluorescent Dyes ; Kinetics ; Microscopy, Fluorescence/instrumentation/*methods ; Salivary Glands/cytology
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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-05-24
    Description: The gene for the RNA subunit (M1 RNA) of ribonuclease P from Salmonella typhimurium directs the synthesis of an RNA that can cleave transfer RNA precursor molecules. The mature M1 RNA coded for by Salmonella typhimurium is 375 nucleotides long and has six nucleotide changes in comparison to M1 RNA from Escherichia coli. The regions for promotion and termination of transcription are closely conserved, but adjacent regions of nucleotide sequences show considerable drift.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baer, M -- Altman, S -- GM19422/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 May 24;228(4702):999-1002.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2408335" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cloning, Molecular ; Endoribonucleases/*analysis ; Escherichia coli/enzymology/genetics ; *Escherichia coli Proteins ; Genes, Bacterial ; Nucleic Acid Conformation ; Nucleic Acid Precursors/genetics ; Promoter Regions, Genetic ; RNA/genetics ; RNA Precursors ; RNA, Bacterial/*genetics/metabolism ; Repetitive Sequences, Nucleic Acid ; Ribonuclease P ; Salmonella typhimurium/enzymology/*genetics ; Terminator Regions, Genetic ; Transcription, Genetic
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  • 5
    Publication Date: 1985-07-05
    Description: Human T-lymphotropic virus type III (HTLV-III) encodes a trans-acting factor that activates the expression of genes linked to the HTLV-III long terminal repeat. By functional mapping of complementary DNA transcripts of viral messenger RNA's the major functional domain of the gene encoding this factor was localized to a region immediately before the env gene of the virus, a region previously thought to be noncoding. This newly identified gene consists of three exons, and its transcription into messenger RNA involves two splicing events bringing together sequences from the 5' part (287 base pairs), middle (268 base pairs), and 3'part (1258 base pairs) of the HTLV-III genome. A similar messenger RNA with a truncated second exon (70 base pairs) does not encode a trans-acting function. It is proposed that this second messenger RNA is the transcript of a gene (3'-orf) located after the env gene. Messenger RNA's were also identified for the env and gag-pol genes of HTLV-III.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arya, S K -- Guo, C -- Josephs, S F -- Wong-Staal, F -- New York, N.Y. -- Science. 1985 Jul 5;229(4708):69-73.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2990040" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Chromosome Mapping ; Deltaretrovirus/*genetics ; Gene Expression Regulation ; Genes, Regulator ; *Genes, Viral ; Humans ; RNA Splicing ; RNA, Messenger/genetics ; RNA, Viral/genetics ; Repetitive Sequences, Nucleic Acid ; Transcription Factors/*genetics ; Viral Proteins/genetics
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  • 6
    Publication Date: 1985-05-31
    Description: The carcinogenic process is extremely complex and is affected by diverse environmental and host factors. The mechanism for the gradual development of the transformed phenotype (a process termed "progression") was studied in type 5 adenovirus (Ad5)-transformed rat embryo cells. Progression was not correlated with major changes in the pattern of integration of viral DNA sequences. Instead, it was associated with an increased methylation of integrated viral sequences other than those corresponding to the E1 transforming genes of Ad5. A single exposure of progressed cells to the demethylating agent 5-azacytidine (Aza) resulted in a stable reversion to the unprogressed state of the original parental clone. A further selection of cells after growth in agar allowed the isolation of Aza-treated clones that had regained the progressed phenotype. These observations indicate that progression is a reversible process and suggest that progression may be associated with changes in the state of methylation of one or more specific genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Babiss, L E -- Zimmer, S G -- Fisher, P B -- CA-33434/CA/NCI NIH HHS/ -- CA-35675/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 May 31;228(4703):1099-101.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2581317" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviruses, Human/*genetics ; Animals ; Azacitidine/*pharmacology ; Cell Division ; Cell Transformation, Viral/*drug effects ; Cells, Cultured ; DNA, Neoplasm/genetics ; DNA, Viral/genetics ; Gene Expression Regulation ; Genes, Viral ; *Methylation ; Mice ; Neoplasms, Experimental/*pathology ; Rats ; Rats, Inbred Strains/embryology ; Transcription, Genetic
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  • 7
    Publication Date: 1985-06-07
    Description: Many higher plants produce economically important organic compounds such as oils, resins, tannins, natural rubber, gums, waxes, dyes, flavors and fragrances, pharmaceuticals, and pesticides. However, most species of higher plants have never been described, much less surveyed for chemical or biologically active constituents, and new sources of commercially valuable materials remain to be discovered. Advances in biotechnology, particularly methods for culturing plant cells and tissues, should provide new means for the commercial processing of even rare plants and the chemicals they produce. These new technologies will extend and enhance the usefulness of plants as renewable resources of valuable chemicals. In the future, biologically active plant-derived chemicals can be expected to play an increasingly significant role in the commercial development of new products for regulating plant growth and for insect and weed control.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balandrin, M F -- Klocke, J A -- Wurtele, E S -- Bollinger, W H -- New York, N.Y. -- Science. 1985 Jun 7;228(4704):1154-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3890182" target="_blank"〉PubMed〈/a〉
    Keywords: Antineoplastic Agents, Phytogenic/isolation & purification ; Cells, Cultured ; Insecticides/isolation & purification ; Plant Extracts/analysis ; Plant Growth Regulators/isolation & purification ; *Plants/analysis ; *Plants, Medicinal
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  • 8
    Publication Date: 1985-08-09
    Description: Fifteen independently isolated complementary DNA clones that contain T-cell receptor (TCR) V beta genes were sequenced and found to represent 11 different V beta genes. When compared with known sequences, 14 different V beta genes could be defined from a total of 25 complementary DNA's; 11 clones therefore involved repeated usage of previously identified V beta's. Based on these data, we calculate a maximum likelihood estimate of the number of expressed germline V beta genes to be 18 with an upper 95 percent confidence bound of 30 genes. Southern blot analysis has shown that most of these genes belong to single element subfamilies which show very limited interstrain polymorphism. The TCR beta-chain diversity appears to be generated from a limited V beta gene pool primarily by extensive variability at the variable-diversity-joining (V-D-J) junctional site, with no evidence for the involvement of somatic hypermutation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Behlke, M A -- Spinella, D G -- Chou, H S -- Sha, W -- Hartl, D L -- Loh, D Y -- GM07200/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Aug 9;229(4713):566-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3875151" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Base Sequence ; Chromosome Mapping ; Cloning, Molecular ; Dna ; Gene Pool ; *Genetic Variation ; Humans ; Hybridomas ; Immunoglobulin Variable Region/genetics ; Mice ; Mice, Inbred BALB C/genetics ; Mice, Inbred C57BL/genetics ; Mice, Inbred Strains/genetics ; Receptors, Antigen, T-Cell/*genetics ; Species Specificity ; Spleen ; T-Lymphocytes ; Thymus Gland
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  • 9
    Publication Date: 1985-11-22
    Description: In an analysis of the genomic variation of AIDS retroviral isolates from patients living in New York, Alabama, and Zaire, restriction maps were constructed by using seven enzymes, each known to cleave the proviral DNA more than once, in conjunction with Southern blot analysis. The maps of LAV, HTLV-III, and ARV-2 as deduced from their published nucleotide sequences were included in this analysis. The results demonstrated that (i) several "signature" restriction sites were common to all isolates; (ii) with the exception of LAV and HTLV-III, the North American and European isolates were all different from one another and showed no geographical specificity; (iii) the African isolates as a group were more diverse than those from North America and Europe; and (iv) the genomic variability was concentrated within the env gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Benn, S -- Rutledge, R -- Folks, T -- Gold, J -- Baker, L -- McCormick, J -- Feorino, P -- Piot, P -- Quinn, T -- Martin, M -- New York, N.Y. -- Science. 1985 Nov 22;230(4728):949-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2997922" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*microbiology ; Base Sequence ; Chromosome Mapping ; Cloning, Molecular ; DNA Restriction Enzymes ; DNA, Viral/genetics ; Deltaretrovirus/*genetics ; Democratic Republic of the Congo ; Genes, Viral ; Humans ; North America ; Viral Proteins/genetics
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  • 10
    Publication Date: 1985-05-24
    Description: Most of the nuclear genome of warm-blooded vertebrates is a mosaic of very long (much greater than 200 kilobases) DNA segments, the isochores; these isochores are fairly homogeneous in base composition and belong to a small number of major classes distinguished by differences in guanine-cytosine (GC) content. The families of DNA molecules derived from such classes can be separated and used to study the genome distribution of any sequence which can be probed. This approach has revealed (i) that the distribution of genes, integrated viral sequences, and interspersed repeats is highly nonuniform in the genome, and (ii) that the base composition and ratio of CpG to GpC in both coding and noncoding sequences, as well as codon usage, mainly depend on the GC content of the isochores harboring the sequences. The compositional compartmentalization of the genome of warm-blooded vertebrates is discussed with respect to its evolutionary origin, its causes, and its effects on chromosome structure and function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bernardi, G -- Olofsson, B -- Filipski, J -- Zerial, M -- Salinas, J -- Cuny, G -- Meunier-Rotival, M -- Rodier, F -- New York, N.Y. -- Science. 1985 May 24;228(4702):953-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4001930" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Composition ; Base Sequence ; Biological Evolution ; Centrifugation, Density Gradient ; Chickens/*genetics ; Chromosome Banding ; Codon ; Cytosine/analysis ; DNA/analysis/*genetics ; DNA Replication ; DNA, Viral/genetics ; Gene Amplification ; *Genes ; Genes, Viral ; Guanine/analysis ; Humans ; Mammals/*genetics ; Mice/genetics ; Mutation ; Rabbits/genetics ; Recombination, Genetic ; Repetitive Sequences, Nucleic Acid ; Xenopus/*genetics
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  • 11
    Publication Date: 1985-08-09
    Description: The T-cell receptor beta-chain gene has a nuclease hypersensitive site in several kinds of T cells, which does not appear in B cells expressing immunoglobulins. Conversely, the kappa immunoglobulin gene shows a known hypersensitive site at its enhancer element in B cells, as expected, but this site is absent in T cells. As is the case with immunoglobulin genes, the T-cell receptor site lies within the gene, in the intron separating joining and constant region segments. These nuclease hypersensitive DNA configurations in the introns of active T-cell receptor and immunoglobulin genes may arise from control elements that share ancestry but have diverged to the extent that each normally acts only in lymphoid cells which use the proximal gene product.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bier, E -- Hashimoto, Y -- Greene, M I -- Maxam, A M -- AI 19901/AI/NIAID NIH HHS/ -- CA 22427/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Aug 9;229(4713):528-34.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3927483" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/metabolism ; Base Sequence ; Binding Sites ; Cell Line ; Chromosome Mapping ; Collodion ; Deoxyribonuclease I/*metabolism ; Enhancer Elements, Genetic ; Gene Expression Regulation ; Humans ; Hybridomas ; Immunochemistry ; Immunoglobulin Fragments/*genetics ; Immunoglobulin Heavy Chains/genetics ; Immunoglobulin kappa-Chains/genetics ; Mice ; Receptors, Antigen, T-Cell/*genetics ; T-Lymphocytes/*metabolism ; Transcription, Genetic
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  • 12
    Publication Date: 1985-12-06
    Description: Rat atrial natriuretic factor (ANF) is translated as a 152-amino acid precursor preproANF. PreproANF is converted to the 126-amino acid proANF, the storage form of ANF in the atria. ANF isolated from the blood is approximately 25 amino acids long. It is demonstrated here that rat cardiocytes in culture store and secrete proANF. Incubation of proANF with serum produced a smaller ANF peptide. PreproANF seems to be processed to proANF in the atria, and proANF appears to be released into the blood, where it is converted by a protease to a smaller peptide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bloch, K D -- Scott, J A -- Zisfein, J B -- Fallon, J T -- Margolies, M N -- Seidman, C E -- Matsueda, G R -- Homcy, C J -- Graham, R M -- Seidman, J G -- 1R23CA33570/CA/NCI NIH HHS/ -- HL07208/HL/NHLBI NIH HHS/ -- HL26215/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1985 Dec 6;230(4730):1168-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2933808" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Atrial Natriuretic Factor/*biosynthesis/genetics/secretion ; Autoradiography ; Cells, Cultured ; Electrophoresis, Polyacrylamide Gel ; Heart/physiology ; Immune Sera/immunology ; Myocardium/*cytology/metabolism ; Protein Precursors/*biosynthesis/genetics/secretion ; RNA, Messenger/genetics ; Rabbits/immunology ; Rats
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  • 13
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-09-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Botstein, D -- Shortle, D -- New York, N.Y. -- Science. 1985 Sep 20;229(4719):1193-201.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2994214" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Base Sequence ; Cloning, Molecular/*methods ; DNA Transposable Elements ; DNA, Bacterial ; DNA, Recombinant ; Drosophila melanogaster/genetics ; Escherichia coli/genetics ; In Vitro Techniques ; Mutagenicity Tests/*methods ; *Mutation ; Oligonucleotides ; Phenotype
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  • 14
    Publication Date: 1985-05-24
    Description: The in vitro splicing reactions of pre-messenger RNA (pre-mRNA) in a yeast extract were analyzed by glycerol gradient centrifugation. Labeled pre-mRNA appears in a 40S peak only if the pre-mRNA undergoes the first of the two partial splicing reactions. RNA analysis after extraction of glycerol gradient fractions shows that lariat-form intermediates, molecules that occur only in mRNA splicing, are found almost exclusively in this 40S complex. Another reaction intermediate, cut 5' exon RNA, can also be found concentrated in this complex. The complex is stable even in 400 mM KCl, although at this salt concentration, it sediments at 35S and is clearly distinguishable from 40S ribosomal subunits. This complex, termed a "spliceosome," is thought to contain components necessary for mRNA splicing; its existence can explain how separated exons on pre-mRNA are brought into contact.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brody, E -- Abelson, J -- New York, N.Y. -- Science. 1985 May 24;228(4702):963-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3890181" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/genetics ; Base Sequence ; Centrifugation, Density Gradient ; Mutation ; Nucleic Acid Conformation ; Nucleic Acid Precursors/*genetics/metabolism ; RNA Precursors ; *RNA Splicing ; RNA, Fungal/*genetics/metabolism ; RNA, Messenger/*genetics/metabolism ; Saccharomyces cerevisiae/*genetics/metabolism
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  • 15
    Publication Date: 1985-06-21
    Description: Fibroblasts possess several distinct mechanisms that control cellular adhesion to extracellular matrix macromolecules. Monoclonal antibodies to a 140-kilodalton (kD) cell surface glycoprotein inhibited the adhesion of fibroblastic Chinese hamster ovary cells to fibronectin-coated substrata but did not inhibit adhesion to substrata coated with vitronectin, laminin, serum, or other adhesive macromolecules. Thus the 140-kD glycoprotein appears to be involved in the fibronectin-mediated adhesion mechanism but not in other adhesion processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brown, P J -- Juliano, R L -- GM26165/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Jun 21;228(4706):1448-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4012302" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; *Cell Adhesion ; Cell Membrane/immunology/*metabolism ; Cells, Cultured ; Cricetinae ; Cricetulus ; Fibroblasts/metabolism ; Fibronectins/*metabolism ; Glycoproteins/immunology/*metabolism ; Molecular Weight
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  • 16
    Publication Date: 1985-11-22
    Description: Nonhomologous DNA recombination is frequently observed in somatic cells upon the introduction of DNA into cells or in chromosomal events involving sequences already stably carried by the genome. In this report, the DNA sequences at the crossover points for excision of SV40 from chromosomes were shown to be associated with eukaryotic topoisomerase I cleavage sites in vitro. The precise location of the cleavage sites relative to the crossover points has suggested a general model for nonhomologous recombination mediated by topoisomerase I.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bullock, P -- Champoux, J J -- Botchan, M -- CA 30490/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Nov 22;230(4728):954-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2997924" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; Cell Transformation, Viral ; Chromatin/ultrastructure ; Chromosome Mapping ; DNA Topoisomerases, Type I/*metabolism ; Rats ; *Recombination, Genetic ; Simian virus 40/*genetics
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  • 17
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-11-22
    Description: The simple relation between the substrates and products of site-specific recombination raises questions about the control of directionality often observed in this class of DNA transactions. For bacteriophage lambda, viral integration and excision proceed by discrete pathways, and DNA substrates with the intrinsic property of recombining in only one direction can be constructed. These pathways display an asymmetric reliance on a complex array of protein binding sites, and they respond differently to changes in the concentrations of the relevant proteins. The Escherichia coli protein integration host factor (IHF) differentially affects integrative and excisive recombination, thereby influencing directionality. A four- to eightfold increase in intracellular IHF coincides with the transition from exponential to stationary phase; this provides a mechanism for growth phase-dependent regulation of recombination that makes the cellular physiology an intrinsic part of the recombination reaction.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1978455/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1978455/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bushman, W -- Thompson, J F -- Vargas, L -- Landy, A -- AI13544/AI/NIAID NIH HHS/ -- R01 GM033928/GM/NIGMS NIH HHS/ -- R01 GM062723/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Nov 22;230(4728):906-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2932798" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/genetics ; Bacteriophage lambda/*genetics ; Base Sequence ; DNA, Bacterial/genetics ; DNA, Viral/genetics ; DNA-Binding Proteins/genetics ; Escherichia coli/genetics ; Integration Host Factors ; *Lysogeny ; *Recombination, Genetic ; Viral Proteins/genetics
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  • 18
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-06-28
    Description: The var1 gene specifies the only mitochondrial ribosomal protein known to be encoded by yeast mitochondrial DNA. The gene is unusual in that its base composition is nearly 90 percent adenine plus thymine. It and its expression product show a strain-dependent variation in size of up to 7 percent; this variation does not detectably interfere with function. Furthermore, var1 is an expandable gene that participates in a novel recombinational event resembling gene conversion whereby shorter alleles are preferentially converted to longer ones. The remarkable features of var1 indicate that it may have evolved by a mechanism analogous to exon shuffling, although no introns are actually present.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Butow, R A -- Perlman, P S -- Grossman, L I -- GM-22525/GM/NIGMS NIH HHS/ -- GM-26546/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Jun 28;228(4707):1496-501.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2990030" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Base Sequence ; Biological Evolution ; DNA Restriction Enzymes/metabolism ; DNA, Mitochondrial/*analysis ; *Genes, Fungal ; Mutation ; Neurospora/*genetics ; Polymorphism, Genetic
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  • 19
    Publication Date: 1985-06-07
    Description: Human DNA contains multiple copies of a novel class of endogenous retroviral genomes. Analysis of a human recombinant DNA clone (HLM-2) containing one such proviral genome revealed that it is a mosaic of retroviral-related sequences with the organization and length of known endogenous retroviral genomes. The HLM-2 long terminal repeat hybridized with the long terminal repeat of the squirrel monkey virus, a type D retrovirus. The HLM-2 gag and pol genes share extensive nucleotide sequence homology with those of the M432 retrovirus (a type A-related retrovirus), mouse mammary tumor virus (a type B retrovirus), and the avian Rous sarcoma virus (a type C retrovirus). Nucleotide sequence analysis revealed regions in the HLM-2 pol gene that were as much as 70 percent identical to the mouse mammary tumor virus pol gene. A portion of the putative HLM-2 env gene hybridized with the corresponding region of the M432 viral genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Callahan, R -- Chiu, I M -- Wong, J F -- Tronick, S R -- Roe, B A -- Aaronson, S A -- Schlom, J -- GM30400/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Jun 7;228(4704):1208-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2408338" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antigens, Viral/genetics ; Base Sequence ; Cloning, Molecular ; DNA Restriction Enzymes ; Gene Products, gag ; Genes, Viral ; Humans ; RNA-Directed DNA Polymerase/genetics ; Retroviridae/classification/*genetics ; Viral Proteins/genetics
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  • 20
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-06-28
    Description: Both elemental distribution and ion transport in cultured cells have been imaged by ion microscopy. Morphological and chemical information was obtained with a spatial resolution of approximately 0.5 micron for sodium, potassium, calcium, and magnesium in freeze-fixed, cryofractured, and freeze-dried normal rat kidney cells and Chinese hamster ovary cells. Ion transport was successfully demonstrated by imaging Na+-K+ fluxes after the inhibition of Na+- and K+ -dependent adenosine triphosphatase with ouabain. This method allows measurements of elemental (isotopic) distribution to be related to cell morphology, thereby providing the means for studying ion distribution and ion transport under different physiological, pathological, and toxicological conditions in cell culture systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chandra, S -- Morrison, G H -- R01GM24314/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Jun 28;228(4707):1543-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2990033" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/analysis ; Cell Line ; Cells, Cultured ; Cricetinae ; Elements/*analysis ; Female ; Freeze Fracturing ; Kidney/*ultrastructure ; Magnesium/analysis ; Microscopy/methods ; Ouabain/pharmacology ; Ovary/*ultrastructure ; Potassium/analysis ; Rats ; Sodium/analysis ; Sodium-Potassium-Exchanging ATPase/antagonists & inhibitors ; Tissue Distribution
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  • 21
    Publication Date: 1985-03-22
    Description: Fibrinogen fragment D, which is heterogeneous, has several important biological functions. Human fibrinogen fragments D94 (molecular weight, 94,000), D78 (78,000), and E (52,000) were purified. Fragments D78 and D94 but not purified fibrinogen or fragment E specifically caused disorganization of bovine aortic endothelial cells cultured as monolayers. Within 2 hours of exposure to pathophysiological concentrations of fragment D, the confluent endothelial cells retracted from each other and projected pseudopodia. These disturbed cells subsequently became rounded and detached from the substrate. The actin present in stress fibers in stationary monolayer cells was diffusely redistributed in cells with fragment D-induced alterations in morphology. This effect was not observed in monolayers of kidney epithelial cells. The results demonstrate a specific effect of fibrinogen fragment D on the disorganization of cultured vascular endothelial cell monolayers and suggest that fragment D plays a role in the pathogenesis of syndromes with vascular endothelial damage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dang, C V -- Bell, W R -- Kaiser, D -- Wong, A -- New York, N.Y. -- Science. 1985 Mar 22;227(4693):1487-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4038818" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/analysis ; Animals ; Aorta ; Cattle ; Cell Adhesion/drug effects ; Cell Line ; Cells, Cultured ; Cytoskeleton/drug effects ; Endothelium/analysis/*cytology/drug effects/ultrastructure ; Epithelial Cells ; Fibrin Fibrinogen Degradation Products/*pharmacology ; Humans ; Kidney ; Pseudopodia/drug effects
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  • 22
    Publication Date: 1985-06-07
    Description: The T-cell antigen receptor is a cell surface molecule vital in mediating the cellular immune response. The arrangement and rearrangement of the gene segments encoding the beta-chain polypeptide of the receptor are similar to those of immunoglobulin gene segments. The two constant region genes of the human T-cell antigen receptor are 8 kilobases apart with a cluster of joining segments located 5' of each constant region gene. Although most beta-chain gene rearrangements involve the variable, diversity, and joining segments, analysis of a beta-chain complementary DNA clone suggests the occasional occurrence of another type of rearrangement.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Duby, A D -- Klein, K A -- Murre, C -- Seidman, J G -- AI-19438/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1985 Jun 7;228(4704):1204-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3839095" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA/genetics ; Genes ; Humans ; Macromolecular Substances ; Receptors, Antigen, T-Cell/*genetics ; Recombination, Genetic
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  • 23
    Publication Date: 1985-03-15
    Description: Human lymphocytes were exposed in vitro to ultrasound from two clinical devices, one of which was previously reported to have increased the frequency of sister chromatid exchanges. The ultrasonic exposures had no significant effect on the frequency of sister chromatid exchanges from three blood donors. Exposure to ultrasound also had no effect on cell cycle progression. A concomitant positive control (mitomycin C) resulted in a significant increase in sister chromatid exchanges.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ciaravino, V -- Brulfert, A -- Miller, M W -- Jacobson-Kram, D -- Morgan, W F -- ES03000/ES/NIEHS NIH HHS/ -- ES03238/ES/NIEHS NIH HHS/ -- GM22680/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Mar 15;227(4692):1349-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3883487" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Cycle ; Cells, Cultured ; Humans ; Lymphocytes ; *Sister Chromatid Exchange ; Ultrasonography/*adverse effects
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  • 24
    Publication Date: 1985-12-20
    Description: A retroviral expression vector (N2) containing the selectable gene, neoR, has been used to determine the optimal conditions for infecting murine hematopoietic progenitor cells at high efficiency. After infected bone marrow cells were introduced into lethally irradiated mice, the presence, stability, and expression of the vector DNA sequences were analyzed either in individual spleen foci 10 days later or in the blood, bone marrow, and spleens of mice 4 months later. When bone marrow cells were cultured in medium containing virus with titers of more than 10(6) colony-forming units per milliliter in the presence of purified murine interleukin-3, more than 85 percent of the resulting foci contained vector DNA. This proviral vector DNA was intact. Efficient expression of the neoR gene was demonstrated in most of the DNA-positive foci examined. The spleens of reconstituted animals (over a long term) contained intact "vector DNA" and the blood and bone marrow expressed the neoR gene in some animals. Thus, a retroviral vector can be used to introduce intact exogenous DNA sequences into hematopoietic stem cells with high efficiency and with substantial expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eglitis, M A -- Kantoff, P -- Gilboa, E -- Anderson, W F -- New York, N.Y. -- Science. 1985 Dec 20;230(4732):1395-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2999985" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Bone Marrow/microbiology ; Cells, Cultured ; DNA Transposable Elements ; DNA, Viral/genetics ; *Genes, Viral ; *Genetic Vectors ; Mice ; Moloney murine leukemia virus/*genetics ; Spleen/microbiology ; *Transcription, Genetic
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  • 25
    Publication Date: 1985-02-15
    Description: Isolated rat hepatocytes were incubated in the presence or absence of extracellular calcium and alpha-tocopherol succinate with three different toxic chemicals; namely, adriamycin in combination with 1,3-bis(2-chloroethyl)-1-nitrosourea, ethyl methanesulfonate, and the calcium ionophore A23187. In the absence of extracellular calcium these three compounds were far more toxic to the cells than in its presence. The addition of vitamin E to calcium-free medium, however, protected hepatocytes against toxic injury, whereas cells incubated in medium containing calcium were not protected. Hepatocyte viability during each toxic insult correlated well with the cellular alpha-tocopherol content but not with the presence or absence of extracellular calcium. These results suggest that cellular alpha-tocopherol maintains the viability of the cell during a toxic insult and that the presence or absence of vitamin E in the incubation medium probably explains the conflicting reports on the role of extracellular calcium in toxic cell death.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fariss, M W -- Pascoe, G A -- Reed, D J -- ES01978/ES/NIEHS NIH HHS/ -- ES07060/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1985 Feb 15;227(4688):751-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3918345" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcimycin/toxicity ; Calcium/*physiology ; Carmustine/toxicity ; Cell Survival/*drug effects ; Cells, Cultured ; Doxorubicin/toxicity ; Ethyl Methanesulfonate/toxicity ; Liver/cytology/*drug effects ; Male ; Rats ; Rats, Inbred Strains ; Vitamin E/*physiology
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  • 26
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-04-26
    Description: The interleukins, which have a regulatory role in immune function, may also mediate inflammation associated with injury to the brain. In experiments to determine the effect of these peptide hormones on glial cell proliferation in culture, interleukin-1 was a potent mitogen for astroglia but had no effect on oligodendroglia. Interleukin-2 did not alter the growth of either type of glial cell. Activity similar to that of interleukin-1 was detected in brains of adult rats 10 days after the brains had been injured. These findings suggest that interleukin-1, released by inflammatory cells, may promote the formation of scars by astroglia in the damaged mammalian brain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Giulian, D -- Lachman, L B -- EY04915/EY/NEI NIH HHS/ -- R01CA38043/CA/NCI NIH HHS/ -- RR5511/RR/NCRR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1985 Apr 26;228(4698):497-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3872478" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Astrocytes/*pathology ; Brain Injuries/*pathology ; Cells, Cultured ; Chromatography, High Pressure Liquid/methods ; Chromatography, Ion Exchange/methods ; Interleukin-1/isolation & purification/*physiology ; Interleukin-2/physiology ; Isoelectric Focusing ; *Mitogens ; Oligodendroglia/pathology ; Rats
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  • 27
    Publication Date: 1985-11-29
    Description: The transfer of the human gene for hypoxanthine phosphoribosyltransferase (HPRT) into human bone marrow cells was accomplished by use of a retroviral vector. The cells were infected in vitro with a replication-incompetent murine retroviral vector that carried and expressed a mutant HPRT complementary DNA. The infected cells were superinfected with a helper virus and maintained in long-term culture. The production of progeny HPRT virus by the bone marrow cells was demonstrated with a colony formation assay on cultured HPRT-deficient, ouabain-resistant murine fibroblasts. Hematopoietic progenitor cells able to form colonies of granulocytes or macrophages (or both) in semisolid medium in the presence of colony stimulating factor were present in the nonadherent cell population. Colony forming units cloned in agar and subsequently cultured in liquid medium produced progeny HPRT virus, indicating infection of this class of hematopoietic progenitor cell.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gruber, H E -- Finley, K D -- Hershberg, R M -- Katzman, S S -- Laikind, P K -- Seegmiller, J E -- Friedmann, T -- Yee, J K -- Jolly, D J -- AM 13622/AM/NIADDK NIH HHS/ -- GM 28223/GM/NIGMS NIH HHS/ -- HD20034/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1985 Nov 29;230(4729):1057-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3864246" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Gene Expression Regulation ; *Genetic Engineering ; Genetic Vectors ; Hematopoietic Stem Cells/*physiology ; Humans ; Hypoxanthine Phosphoribosyltransferase/*genetics ; Mice ; Retroviridae/*genetics ; Transfection
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  • 28
    Publication Date: 1985-11-01
    Description: The 21-base pair repeat elements of the SV40 promoter contain six tandem copies of the GGGCGG hexanucleotide (GC-box), each of which can bind, with varying affinity, to the cellular transcription factor, Sp1. In vitro SV40 early RNA synthesis is mediated by interaction of Sp1 with GC-boxes I, II, and III, whereas transcription in the late direction is mediated by binding to GC-boxes III, V, and VI.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gidoni, D -- Kadonaga, J T -- Barrera-Saldana, H -- Takahashi, K -- Chambon, P -- Tjian, R -- New York, N.Y. -- Science. 1985 Nov 1;230(4725):511-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2996137" target="_blank"〉PubMed〈/a〉
    Keywords: Autoradiography ; Base Sequence ; Binding Sites ; DNA-Binding Proteins/*metabolism ; Deoxyribonuclease I/metabolism ; Electrophoresis, Polyacrylamide Gel ; Gene Expression Regulation ; Mutation ; Pregnancy Proteins/*metabolism ; RNA, Messenger/analysis ; RNA, Viral/biosynthesis ; Simian virus 40/*genetics ; Sp1 Transcription Factor ; Templates, Genetic ; Transcription Factors/*metabolism ; *Transcription, Genetic
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  • 29
    Publication Date: 1985-04-05
    Description: Formaldehyde, a common environmental pollutant, inhibits repair of O6-methylguanine and potentiates the mutagenicity of an alkylating agent, N-methyl-N-nitrosourea, in normal human fibroblasts. Because formaldehyde alone also causes mutations in human cells, the compound may cause genotoxicity by a dual mechanism of directly damaging DNA and inhibiting repair of mutagenic and carcinogenic DNA lesions caused by other chemical and physical carcinogens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grafstrom, R C -- Curren, R D -- Yang, L L -- Harris, C C -- New York, N.Y. -- Science. 1985 Apr 5;228(4695):89-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3975633" target="_blank"〉PubMed〈/a〉
    Keywords: Bronchi/cytology ; Cells, Cultured ; DNA Repair/*drug effects ; Drug Synergism ; Fibroblasts/drug effects ; Formaldehyde/*adverse effects/pharmacology ; Guanine/analogs & derivatives/metabolism ; Humans ; Methylnitrosourea/pharmacology ; Mutagens/*pharmacology
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  • 30
    Publication Date: 1985-01-18
    Description: Enhancer sequences are regulatory regions that greatly increase transcription of certain eukaryotic genes. An immunoglobulin heavy-chain variable gene segment is moved from a region lacking enhancer activity to a position adjacent to the known heavy-chain enhancer early in B-cell maturation. In lymphoid cells, the heavy-chain and SV40 enhancers bind a common factor essential for enhancer function. In contrast, fibroblast cells contain a functionally distinct factor that is used by the SV40 but not by the heavy-chain enhancer. The existence of different factors in these cells may explain the previously described lymphoid cell specificity of the heavy-chain enhancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mercola, M -- Goverman, J -- Mirell, C -- Calame, K -- GM29361/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Jan 18;227(4684):266-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3917575" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibody Formation ; B-Lymphocytes/immunology ; Base Sequence ; Cell Line ; *Enhancer Elements, Genetic ; Fibroblasts/immunology ; *Genes, Regulator ; Humans ; Immunoglobulin Constant Regions/genetics ; Immunoglobulin Heavy Chains/*genetics ; Immunoglobulin Variable Region/genetics ; Mice ; Transcription, Genetic
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  • 31
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-05-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1985 May 24;228(4702):977.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3159088" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Nucleic Acid Precursors/*genetics/metabolism ; RNA Precursors ; *RNA Splicing ; RNA, Messenger/*genetics/metabolism ; Ribonucleoproteins/physiology ; Ribonucleoproteins, Small Nuclear
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  • 32
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-05-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1985 May 3;228(4699):571.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3983640" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Biological Clocks ; DNA/metabolism ; Humans ; Mice ; Rats
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  • 33
    Publication Date: 1985-05-10
    Description: Immunoglobulin K genes are constructed during lymphocyte differentiation by the joining of two DNA elements, VK and JK, to form both a VKJK coding unit and a reciprocal recombination product. The two products formed in single VK-to-JK joining events can be directly isolated through the use of a retrovirally introduced recombination substrate. The structural analysis of a number of recombinants and the derivation of secondary recombination products define some of the basic features of the mechanism of immunoglobulin gene assembly.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewis, S -- Gifford, A -- Baltimore, D -- New York, N.Y. -- Science. 1985 May 10;228(4700):677-85.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3158075" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacteriophage lambda/genetics ; Base Sequence ; DNA/*genetics ; *Genes, MHC Class II ; Immunoglobulin J-Chains/genetics ; Immunoglobulin Light Chains/*genetics ; Immunoglobulin Variable Region/genetics ; Immunoglobulin kappa-Chains/*genetics ; Mice ; *Recombination, Genetic
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  • 34
    Publication Date: 1985-09-20
    Description: A repeated 82 base pair sequence in genomic DNA of the rat was previously proposed as being a control element governing brain (neuron) specific genetic expression. This intronic sequence, termed the brain "identifier" (ID), is complementary to small RNA species localized in brain cytoplasm, and it was thought to be represented specifically in RNA produced by brain nuclei in vitro. The RNA blot analyses of total nuclear and polyadenylated heterogeneous nuclear RNA described in the present report show that this ID sequence is also present in the liver and kidney in abundances similar to those in the brain. This repeated sequence is not, therefore, restricted to transcripts produced in the brain as suggested from previous transcriptional "runoff" experiments. Measurements on rat and mouse nuclear RNA indicate that the abundance of ID sequence transcript is roughly proportional to the number of copies of this repeat in the respective genomes. This suggests a rather random genomic location and transcription of this sequence. From these results it seems improbable that the ID sequence functions as a transcriptional-level control element in genes expressed specifically in the brain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Owens, G P -- Chaudhari, N -- Hahn, W E -- NS10813/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 Sep 20;229(4719):1263-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2412293" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Brain Chemistry ; Cloning, Molecular ; *Genes ; Kidney/analysis ; Liver/analysis ; Mice ; Neural Crest/analysis ; Nucleic Acid Hybridization ; RNA/*analysis ; Rats ; Transcription, Genetic
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  • 35
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-09-20
    Description: During normal mouse development the relative amounts of two types of U1 small nuclear RNA's (U1 RNA) change significantly. Fetal tissues have comparable levels of the two major types of mouse U1 RNA's, mU1a and mU1b, whereas most differentiated adult tissues contain only mU1a RNA's. Those adult tissues that also accumulate detectable amounts of embryonic (mU1b) RNA's (for example, testis, spleen, and thymus) contain a significant proportion of stem cells capable of further differentiation. Several strains of mice express minor sequence variants of U1 RNA's that are subject to the same developmental controls as the major types of adult and embryonic U1 RNA. The differential accumulation of embryonic U1 RNA's may influence the pattern of gene expression during early development and differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lund, E -- Kahan, B -- Dahlberg, J E -- CA 33453/CA/NCI NIH HHS/ -- GM 30220/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Sep 20;229(4719):1271-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2412294" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Base Sequence ; Brain/*growth & development/metabolism ; Cell Line ; Embryonic and Fetal Development ; Liver/*growth & development/metabolism ; Male ; Mice ; Mice, Inbred ICR ; Neoplastic Stem Cells/metabolism ; Nucleic Acid Hybridization ; RNA/*biosynthesis ; RNA, Messenger/biosynthesis ; RNA, Small Nuclear ; Testis/*growth & development/metabolism
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  • 36
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-07-12
    Description: The excised introns of pre-messenger RNA's (pre-mRNA's) and intron-containing splicing intermediates are in a lariat configuration in which the 5' end of the intron is covalently joined by a 2',5'-phosphodiester bond to a specific adenosine residue near the 3' end of the intron. A 2',5'-phosphodiesterase activity in HeLa cell extracts has been detected that debranches RNA lariats, converting them to linear RNA molecules by specific cleavage of the 2',5'-phosphodiester bond. This lariat debranching activity is distinct from previously reported 2',5'-phosphodiesterases with regard to its biochemical and substrate requirements as well as its stringent cleavage specificity. The debranching activity is observed only if the RNA lariats generated during in vitro processing are deproteinized and added back to the extract. These results suggest that during the normal in vitro splicing reaction the 2',5'-phosphodiester bond of RNA lariats is protected from cleavage by the lariat debranching activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ruskin, B -- Green, M R -- New York, N.Y. -- Science. 1985 Jul 12;229(4709):135-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2990042" target="_blank"〉PubMed〈/a〉
    Keywords: Autoradiography ; Base Sequence ; Globins/genetics ; HeLa Cells ; Nucleic Acid Conformation ; Phosphoric Diester Hydrolases/*metabolism ; *RNA Splicing ; Substrate Specificity
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  • 37
    Publication Date: 1985-12-20
    Description: Two new methods were used to establish a rapid and highly sensitive prenatal diagnostic test for sickle cell anemia. The first involves the primer-mediated enzymatic amplification of specific beta-globin target sequences in genomic DNA, resulting in the exponential increase (220,000 times) of target DNA copies. In the second technique, the presence of the beta A and beta S alleles is determined by restriction endonuclease digestion of an end-labeled oligonucleotide probe hybridized in solution to the amplified beta-globin sequences. The beta-globin genotype can be determined in less than 1 day on samples containing significantly less than 1 microgram of genomic DNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Saiki, R K -- Scharf, S -- Faloona, F -- Mullis, K B -- Horn, G T -- Erlich, H A -- Arnheim, N -- New York, N.Y. -- Science. 1985 Dec 20;230(4732):1350-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2999980" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Anemia, Sickle Cell/*diagnosis/genetics ; Base Sequence ; Clinical Laboratory Techniques ; DNA Restriction Enzymes ; DNA-Directed DNA Polymerase ; Escherichia coli ; *Gene Amplification ; Globins/*genetics ; Humans ; Nucleic Acid Hybridization ; Polymorphism, Genetic
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  • 38
    Publication Date: 1985-08-23
    Description: The complete nucleotide sequence of the coding region of the circumsporozoite antigen gene (CS gene) of the Nuri strain of the malarial parasite Plasmodium knowlesi is presented. The gene from the Nuri strain exhibits a novel form of sequence diversity when compared to the CS gene from the H strain. Instead of the 12 tandem repeating 36-base pair units of the H strain, the Nuri strain contains 16 tandem repeating 27-base pair units of a different nucleotide sequence that encodes a different repeating peptide. In contrast, the 5' and 3' coding and noncoding sequences flanking the repeats are 98 percent conserved in both strains.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sharma, S -- Svec, P -- Mitchell, G H -- Godson, G N -- 1 R01 AI21496-01/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1985 Aug 23;229(4715):779-82.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4023712" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, Protozoan/*genetics ; Antigens, Surface/genetics ; Base Sequence ; Genes ; Molecular Sequence Data ; Plasmodium/*genetics/immunology ; Protozoan Proteins/*genetics ; Repetitive Sequences, Nucleic Acid
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  • 39
    Publication Date: 1985-01-25
    Description: An in vitro model was developed to study the hepatic phase of Plasmodium falciparum, the only malaria parasite lethal to man. Primary cultures of human hepatocytes were inoculated with sporozoites of Brazilian and African strains of P. falciparum. On days 1 through 7 after inoculation examination of fluorescence-labeled and Giemsa-stained preparations demonstrated the presence of many intracellular parasites. In three separate sets of experiments all cultures were found to be infected with as many as 650 liver schizonts measuring up to 40 micrometers. After the addition of red blood cells, intraerythrocytic forms of P. falciparum were detected on days 12 and 13 by an immunofluorescence assay, indicating that the hepatic cycle had been completed in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mazier, D -- Beaudoin, R L -- Mellouk, S -- Druilhe, P -- Texier, B -- Trosper, J -- Miltgen, F -- Landau, I -- Paul, C -- Brandicourt, O -- New York, N.Y. -- Science. 1985 Jan 25;227(4685):440-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3880923" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Azure Stains ; Cells, Cultured ; Culture Media ; Erythrocytes/parasitology ; Fluorescent Antibody Technique ; Liver/*parasitology ; Plasmodium falciparum/cytology/*growth & development ; Time Factors
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  • 40
    Publication Date: 1985-12-20
    Description: Plasmodium vivax is one of the four malaria parasites that cause disease in humans. The structure of the immunodominant repeating peptide of the circumsporozoite (CS) protein of P. vivax was determined. A fragment of P. vivax DNA that encodes this tandemly repeating epitope was isolated by use of an oligonucleotide probe whose sequence is thought to be conserved in CS protein genes. DNA sequence analysis of the P. vivax clone indicates that the CS repeat is nine amino acids in length (Gly-Asp-Arg-Ala-Asp-Gly-Gln-Pro-Ala). The structure of the repeating region was confirmed with synthetic peptides and monoclonal antibodies directed against P. vivax sporozoites. This information should allow synthesis of a vaccine for P. vivax that is similar to the one being tested for P. falciparum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCutchan, T F -- Lal, A A -- de la Cruz, V F -- Miller, L H -- Maloy, W L -- Charoenvit, Y -- Beaudoin, R L -- Guerry, P -- Wistar, R Jr -- Hoffman, S L -- New York, N.Y. -- Science. 1985 Dec 20;230(4732):1381-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2416057" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, Surface/*genetics ; Base Sequence ; DNA Restriction Enzymes ; Epitopes/*genetics ; *Genes ; Plasmodium vivax/*immunology ; Species Specificity
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  • 41
    Publication Date: 1985-07-05
    Description: The retrovirus involved in acquired immune deficiency syndrome (HTLV-III/LAV) contains a region that is necessary for stimulation of gene expression directed by the viral long terminal repeat. This region is located between nucleotides 5365 and 5607, immediately 5' to the envelope gene. A doubly-spliced message containing this region could encode an 86-amino acid protein with structural features similar to those of nucleic acid-binding proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sodroski, J -- Patarca, R -- Rosen, C -- Wong-Staal, F -- Haseltine, W -- CA07094/CA/NCI NIH HHS/ -- CAA07580/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Jul 5;229(4708):74-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2990041" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Chromosome Deletion ; Chromosome Mapping ; Deltaretrovirus/*genetics ; Gene Expression Regulation ; *Genes, Viral ; Humans ; Promoter Regions, Genetic ; RNA Splicing ; RNA, Messenger/genetics ; RNA, Viral/genetics ; Repetitive Sequences, Nucleic Acid ; Transcription Factors/*genetics ; Viral Proteins/*genetics
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  • 42
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-10-25
    Description: The molecular basis of a human immunoglobulin deficiency characterized by the complete absence of kappa chains has been investigated by nucleotide sequence analyses of a patient's kappa constant region (C kappa) genes. Both of his C kappa genes had a single point mutation, resulting in the loss of the invariant tryptophan from one allele and of an invariant cysteine from the other allele. These results indicate that neither of the patient's C kappa alleles encoded a kappa chain that could form a stable intradomain disulfide bond, although peculiarities in the expression of kappa chains in the patient's family suggest that other factors may be involved.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stavnezer-Nordgren, J -- Kekish, O -- Zegers, B J -- AI17558/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1985 Oct 25;230(4724):458-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3931219" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; DNA, Recombinant ; Genetic Engineering ; Humans ; Immunoglobulin kappa-Chains/*genetics ; Immunologic Deficiency Syndromes/*genetics ; Pedigree ; Rabbits
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  • 43
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-07-19
    Description: In addition to nerve growth factor (NGF), many proteins present in soluble tissue extracts and in the extracellular matrix influence the survival and development of cultured neurons. The structure, synthesis, and mechanism of action of NGF as a neurotrophic factor are considered along with the experiments on the new putative trophic molecules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thoenen, H -- Edgar, D -- New York, N.Y. -- Science. 1985 Jul 19;229(4710):238-42.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2409599" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cattle ; Cell Survival ; Cells, Cultured ; Chick Embryo ; Chickens ; Cyclic AMP/physiology ; DNA/genetics ; Extracellular Matrix/physiology ; Humans ; Ion Channels/physiology ; Male ; Mice ; Molecular Weight ; Myocardium/cytology ; Nerve Growth Factors/genetics/isolation & purification/*physiology ; Neurons/physiology ; Protein Precursors/genetics ; RNA, Messenger/metabolism ; Rats ; Receptors, Cell Surface/physiology ; Receptors, Nerve Growth Factor ; Sympathetic Nervous System/cytology
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  • 44
    Publication Date: 1985-03-22
    Description: An earlier finding that lymphocytes from African patients with the acquired immune deficiency syndrome (AIDS) react with rabbit antiserum to purified antigens of bovine leukemia virus (BLV) prompted a study of the possible cross-reactions between a BLV-infected ovine cell line and human lymphocytes inoculated with a strain of lymphadenopathy syndrome-associated virus (LAV). A solid-phase radioimmunoassay was used to detect antigenic markers of the retroviruses. Crude extracts from short-term cultures of lymphocytes infected with LAV bound rabbit antisera to the LAV glycoprotein gp13 (molecular weight 13,000) and the BLV proteins p24 and gp51, but did not bind antibodies to the p24 of human T-cell leukemia virus type I (HTLV-I). Antiserum to LAV gp13 reacted with an ovine cell line producing BLV but also weakly with virus-free ovine cells. Lymphocyte cultures from four African patients with AIDS expressed BLV-related antigens within 6 to 10 days of culture, at the moment when particle-bound reverse transcriptase was produced. BLV-related antigens were induced in lymphocyte cultures from healthy individuals by addition of filtered supernatant or irradiated cells of the original culture. The antisera to BLV used in this study may prove useful for the detection of AIDS-associated viruses in short-term cultures of lymphocytes from AIDS patients or their contacts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thiry, L -- Sprecher-Goldberger, S -- Jacquemin, P -- Cogniaux, J -- Burny, A -- Bruck, C -- Portetelle, D -- Cran, S -- Clumeck, N -- New York, N.Y. -- Science. 1985 Mar 22;227(4693):1482-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2579433" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*microbiology ; Animals ; Antigens, Viral/analysis/*immunology ; Cell Line ; Cells, Cultured ; Cross Reactions ; Deltaretrovirus/*immunology ; Epitopes/immunology ; Humans ; Leukemia Virus, Bovine/*immunology ; Lymph Nodes/microbiology ; Lymphocytes/immunology/*microbiology ; Radioimmunoassay ; Retroviridae/*immunology ; Sheep ; Viral Proteins/immunology
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  • 45
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-11-08
    Description: A new method has been devised to measure the number of base pairs per helical turn along any DNA molecule in solution. A DNA restriction fragment is adsorbed onto crystalline calcium phosphate, fragmented by reaction with iron(II) EDTA, and subjected to electrophoresis on a denaturing polyacrylamide gel. A modulated cutting pattern results, which gives directly the helical periodicity of the DNA molecule. A 150-base pair sequence directly upstream of the thymidine kinase gene of the type 1 herpes simplex virus was found to have an overall helical twist of 10.5 base pairs per turn, which is characteristic of the B conformation of DNA. In addition, purines 3' to pyrimidines showed lower than expected reactivity toward the iron cutting reagent, which is evidence for sequence-dependent variability in DNA conformation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tullius, T D -- Dombroski, B A -- S07 RR07041/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1985 Nov 8;230(4726):679-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2996145" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *DNA/genetics ; DNA Restriction Enzymes ; *Edetic Acid ; Electrophoresis, Polyacrylamide Gel ; *Nucleic Acid Conformation ; Nucleic Acid Denaturation ; Simplexvirus/genetics
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  • 46
    Publication Date: 1985-05-10
    Description: The DNA coding for the human immunoglobulin D(IgD) heavy chain (delta, delta) has been sequenced including the membrane and secreted termini. Human delta, like that of the mouse, has a separate exon for the carboxyl terminus of the secreted form. This feature of human and mouse IgD distinguishes it from all other immunoglobulins regardless of species or class. The human gene is different from that of the mouse; it has three, rather than two, constant region domains; and its lengthy hinge is encoded by two exons rather than one. Except for the third constant region, the human and mouse genes are only distantly related.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉White, M B -- Shen, A L -- Word, C J -- Tucker, P W -- Blattner, F R -- AI18016/AI/NIAID NIH HHS/ -- CA31013-04/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 May 10;228(4700):733-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3922054" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Humans ; Immunoglobulin D/*genetics ; Immunoglobulin Heavy Chains/*genetics ; Immunoglobulin delta-Chains/*genetics ; Lymphocytes/metabolism ; Mice ; RNA, Messenger/genetics ; Species Specificity
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  • 47
    Publication Date: 1985-01-01
    Description: A 16S ribosomal RNA gene has been sequenced from Heliobacterium chlorum, the recently discovered photosynthetic bacterium that contains a novel form of chlorophyll. Comparisons with other 16S ribosomal RNA sequences show that the organism belongs to the Gram-positive bacteria (one of ten eubacterial "phyla")--more precisely to the so-called low G + C (G, guanine; C, cytosine) subdivision thereof. This brings to five the number of such phyla that contain photosynthetic species, the other four being the purple bacteria and relatives, the green sulfur bacteria, the green nonsulfur bacteria, and the cyanobacteria. The finding suggests that Gram-positive bacteria may be of photosynthetic ancestry, and it strengthens the case for a common photosynthetic ancestry for all eubacteria.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Woese, C R -- Debrunner-Vossbrinck, B A -- Oyaizu, H -- Stackebrandt, E -- Ludwig, W -- New York, N.Y. -- Science. 1985;229:762-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics and Development, University of Illinois, Urbana 61801, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11539659" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria ; Base Sequence ; *Biological Evolution ; Chlorobi ; Chlorophyll/analysis ; Cyanobacteria ; Cytosine/analysis ; DNA, Bacterial/analysis/chemistry/genetics ; Gram-Positive Bacteria/*classification/genetics/physiology ; Guanine/analysis ; Molecular Sequence Data ; Oligonucleotides/analysis/chemistry/genetics ; Photosynthesis/*genetics/physiology ; RNA, Bacterial/analysis/chemistry/genetics ; RNA, Ribosomal, 16S/analysis/chemistry/*genetics ; *Sequence Homology, Nucleic Acid
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  • 48
    Publication Date: 1985-05-17
    Description: Clones of complementary DNA encoding the human lymphokine known as granulocyte-macrophage colony-stimulating factor (GM-CSF) were isolated by means of a mammalian cell (monkey COS cell) expression screening system. One of these clones was used to produce recombinant GM-CSF in mammalian cells. The recombinant hematopoietin was similar to the natural product that was purified to apparent homogeneity from medium conditioned by a human T-cell line. The human T-cell GM-CSF was found to be 60 percent homologous with the GM-CSF recently cloned from murine lung messenger RNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wong, G G -- Witek, J S -- Temple, P A -- Wilkens, K M -- Leary, A C -- Luxenberg, D P -- Jones, S S -- Brown, E L -- Kay, R M -- Orr, E C -- New York, N.Y. -- Science. 1985 May 17;228(4701):810-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3923623" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; *Cloning, Molecular ; Colony-Stimulating Factors/biosynthesis/*genetics/isolation & purification ; *Dna ; DNA, Recombinant ; *Granulocytes ; Haplorhini ; Humans ; *Macrophages ; RNA, Messenger/genetics ; T-Lymphocytes ; Transfection
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  • 49
    Publication Date: 1985-08-23
    Description: The DNA genomes of human T-lymphotropic virus type III (HTLV-III) isolated from 18 individuals with AIDS or who were at risk for AIDS were evaluated for evidence of variation. Although all of the 18 viral DNA's hybridized throughout their entire genomes to a full-length cloned probe of the original HTLV-III isolate, each of the 18 isolates showed a different restriction enzyme pattern. The number of restriction site differences between isolates ranged from only 1 site in 23 to at least 16 sites in 31. No particular viral genotype was associated with a particular disease state and 2 of the 18 patients had evidence of concurrent infection by more than one viral genotype. Propagation of three different viral isolates in vitro for up to 9 months did not lead to detectable changes in their restriction patterns. These findings indicate that different isolates of HTLV-III comprise a spectrum of highly related but distinguishable viruses and have important implications regarding the pathogenicity of HTLV-III and attempts to develop effective diagnostic, therapeutic, and preventive measures for this virus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wong-Staal, F -- Shaw, G M -- Hahn, B H -- Salahuddin, S Z -- Popovic, M -- Markham, P -- Redfield, R -- Gallo, R C -- New York, N.Y. -- Science. 1985 Aug 23;229(4715):759-62.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2992084" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*microbiology ; Carrier State ; Cells, Cultured ; DNA Restriction Enzymes ; Deltaretrovirus/*genetics ; Humans ; Polymorphism, Genetic
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  • 50
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-09-13
    Description: The intervening sequence RNA excised from the ribosomal RNA precursor of Tetrahymena forms linear and circular oligomers when exposed to a heating-cooling treatment in vitro. The reactions require no protein or external energy source. Oligomerization is different from other self-catalyzed reactions of the intervening sequence RNA in that it involves intermolecular rather than intramolecular recombination, producing RNA molecules that are substantially larger than the original. The observation that RNA molecules can catalyze their own oligomerization has possible implications for the evolution of chromosomes and for the replicative cycle of plant viroids and virus-associated RNA's.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zaug, A J -- Cech, T R -- GM28039/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Sep 13;229(4718):1060-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2412290" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Electrophoresis, Polyacrylamide Gel ; Nucleic Acid Conformation ; Nucleic Acid Precursors/analysis ; Polymers/analysis ; RNA/*analysis ; RNA Precursors ; RNA, Ribosomal/analysis ; Tetrahymena/genetics
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  • 51
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-10-18
    Description: Deoxyoligonucleotides can now be synthesized rapidly and in high yield because of recent advances in nucleic acid chemistry. Key innovations include solid-phase synthesis on silica-based supports and the development of stable deoxynucleoside phosphoramidites as synthons. When incorporated into manual, semiautomatic, or automatic instruments, these new procedures can be used to prepare probes, mixed probes, deoxyoligonucleotides for priming DNA synthesis, analogues of deoxyoligonucleotides, and DNA segments containing more than 100 deoxynucleotides.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Caruthers, M H -- GM21120/GM/NIGMS NIH HHS/ -- GM25680/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Oct 18;230(4723):281-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3863253" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cloning, Molecular ; DNA/chemical synthesis/genetics ; *Genetic Engineering ; Oligodeoxyribonucleotides/chemical synthesis
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  • 52
    Publication Date: 1985-12-20
    Description: A human DNA sequence (p12f2), derived from a partial Y-chromosome genomic library and showing homology with the X and Y chromosomes and with an undetermined number of autosomes, detected two Y-specific restriction fragment length variants on male DNA that had been digested with Taq I and Eco RI. These variants may have been generated through a deletion-insertion mechanism and their pattern of holoandric transmission indicates that they represent a two-allele Y-linked polymorphism (RFLP). By means of DNA from patients with inborn deletions in chromosome Y, this polymorphic DNA site was mapped to the interval Yq11.1-Yq11.22. The frequency of the rarest allele was about 35 percent in Algerian and Sardinian human males, whereas it was only 4 percent among Northern Europeans. The p12f2 probe also detected Y-specific DNA fragments in the gorilla and chimpanzee. In view of the monosomy of the Y chromosome in mammalian species, Y-linked RFLP's may prove to be more useful than autosomal or X-linked markers in estimating genetic distances within and between species.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Casanova, M -- Leroy, P -- Boucekkine, C -- Weissenbach, J -- Bishop, C -- Fellous, M -- Purrello, M -- Fiori, G -- Siniscalco, M -- HD 16782/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1985 Dec 20;230(4732):1403-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2999986" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *Biological Evolution ; DNA Restriction Enzymes ; *Genetic Variation ; Humans ; *Polymorphism, Genetic ; Sequence Homology, Nucleic Acid ; *Y Chromosome
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  • 53
    Publication Date: 1985-10-04
    Description: Nuclear magnetic resonance spectra (proton and phosphorus-31) and ultraviolet absorption spectra of the DNA decamer d(br5CGbr5CGATbr5CGbr5CG), in which the central two adenine-thymine base pairs are out of order with the rest of the purine-pyrimidine alternation sequence, indicate that under appropriate solvent conditions (high salt and methanol) the molecule undergoes a structural transition from a right-handed B-DNA conformation to a left-handed Z-DNA conformation. Measurements of the two-dimensional nuclear Overhauser effect on the decamer indicate that all of the guanines as well as the two equivalent thymines adopt the syn conformation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Feigon, J -- Wang, A H -- van der Marel, G A -- van Boom, J H -- Rich, A -- RR00995/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1985 Oct 4;230(4721):82-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4035359" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA/*analysis ; Magnetic Resonance Spectroscopy ; *Nucleic Acid Conformation ; Spectrophotometry, Ultraviolet
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  • 54
    Publication Date: 1985-04-19
    Description: Mammalian atria contain peptides that promote the excretion of salt and water from the kidney. When rat atrial tissue is extracted under conditions known to inhibit proteolysis, four natriuretic peptides, cardionatrins I to IV, are consistently isolated. These peptides derive from a common precursor, preprocardionatrin, of 152 amino acids, whose sequence was determined by DNA sequencing of a complementary DNA clone. Amino acid sequencing located the start points of cardionatrins I, III, and IV in the overall sequence. Cardionatrin IV most closely resembles procardionatrin because it begins immediately after the signal sequence at residue 25. Cardionatrin III begins at residue 73, and cardionatrin I, sequenced previously, begins at residue 123. Compositional analysis indicated that each of these cardionatrins extends up to tyrosine at position 150 but lacks the terminal two arginine residues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Flynn, T G -- Davies, P L -- Kennedy, B P -- de Bold, M L -- de Bold, A J -- New York, N.Y. -- Science. 1985 Apr 19;228(4697):323-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3157217" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Atrial Function ; Atrial Natriuretic Factor ; Base Sequence ; Chromatography, High Pressure Liquid ; DNA/*genetics ; Electrophoresis, Polyacrylamide Gel ; Molecular Sequence Data ; Muscle Proteins/*genetics/isolation & purification ; *Peptide Fragments ; Protein Precursors/*genetics/isolation & purification ; Rats
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  • 55
    Publication Date: 1985-06-21
    Description: Human factor VIII--von Willebrand factor (vWF) is a large, multimeric glycoprotein that plays a central role in the blood coagulation system, serving both as a carrier for factor VIIIC (antihemophilic factor) and as a major mediator of platelet-vessel wall interaction. Diminished or abnormal vWF activity results in von Willebrand's disease (vWD), a common and complex hereditary bleeding disorder. Overlapping vWF cDNA clones that span 8.2 kilobases of the vWF messenger RNA have been obtained. vWF accounts for approximately 0.3 percent of endothelial cell messenger RNA and was undetectable in several other tissues examined. A large single copy gene for vWF is located on the short arm of chromosome 12 (12p12----12pter). No gross gene rearrangement or deletion was detected in the DNA of two patients with severe vWD.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ginsburg, D -- Handin, R I -- Bonthron, D T -- Donlon, T A -- Bruns, G A -- Latt, S A -- Orkin, S H -- New York, N.Y. -- Science. 1985 Jun 21;228(4706):1401-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3874428" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Blood Coagulation Factors/*genetics ; Chromosome Mapping ; *Chromosomes, Human, 6-12 and X ; Cloning, Molecular ; DNA/*isolation & purification ; Humans ; RNA, Messenger ; von Willebrand Factor/*genetics
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  • 56
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-09-13
    Description: A psbA gene encoding the target of photosystem II herbicide inhibition, the 32,000-dalton thylakoid membrane protein, has been cloned from a mutant of Anacystis nidulans R2, which is resistant to 3-(3,4-dichlorophenyl)-1,1-dimethylurea-(diuron). A cloned DNA fragment from within the coding region of this gene transforms wild-type cells to herbicide resistance, proving that mutation within psbA is responsible for that phenotype. The mutation consists of a single nucleotide change that replaces serine at position 264 of the wild-type protein with alanine in that of the diuron-resistant mutant.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Golden, S S -- Haselkorn, R -- New York, N.Y. -- Science. 1985 Sep 13;229(4718):1104-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3929379" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Cyanobacteria/*genetics ; Diuron ; Drug Resistance ; Electrophoresis, Polyacrylamide Gel ; *Herbicides ; Membrane Proteins/genetics ; Molecular Weight ; *Mutation ; Phenotype
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  • 57
    Publication Date: 1985-02-01
    Description: Potomac horse fever, a disease characterized by fever, anorexia, leukopenia, and occasional diarrhea, is fatal in approximately 30 percent of affected animals. The seasonal occurrence of the disease (June to October) and evidence of antibodies to the rickettsia Ehrlichia sennetsu in the serum of convalescing horses suggested that a related rickettsia might be the causative agent. Such an agent was isolated in cultured blood monocytes from an experimentally infected pony. This intracytoplasmic organism was adapted to growth in primary cultures of canine blood monocytes. A healthy pony inoculated with these infected monocytes also developed the disease. The organism was reisolated from this animal which, at autopsy, had pathological manifestations typical of Potomac horse fever. Cross serologic reactions between the newly isolated agent and antisera to 15 rickettsiae revealed that it is related to certain members of the genus Ehrlichia, particularly to Ehrlichia sennetsu. Since the disease occurs in other parts of the United States as well as in the vicinity of the Potomac River, and since it has also been reported in Europe, the name equine monocytic ehrlichiosis is proposed as being more descriptive.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holland, C J -- Ristic, M -- Cole, A I -- Johnson, P -- Baker, G -- Goetz, T -- New York, N.Y. -- Science. 1985 Feb 1;227(4686):522-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3880925" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Bacterial/immunology ; Cells, Cultured ; Cross Reactions ; Ehrlichia/growth & development/immunology/*isolation & ; purification/ultrastructure ; Fluorescent Antibody Technique ; Horse Diseases/blood/*microbiology/transmission ; Horses ; Monocytes/*microbiology ; Rickettsiaceae/*isolation & purification ; Rickettsiaceae Infections/blood/microbiology/transmission/*veterinary ; Terminology as Topic ; Vacuoles/ultrastructure
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  • 58
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-08-02
    Description: Visna virus is a pathogenic lentivirus of sheep that is related to human T-cell lymphotropic virus type III (HTLV-III), the probable etiologic agent of the acquired immune deficiency syndrome (AIDS). The transcriptional activity of visna virus promoter and enhancer sequences was studied by means of an assay based on the transient expression of the bacterial gene chloramphenicol acetyltransferase (CAT). The results suggest that the high level of expression of visna virus is due in part to cis-acting enhancer sequences that give the viral promoter a high level of transcriptional activity. In addition, the rate of transcription from the visna virus promoter situated in a plasmid expressing the CAT gene was much greater in infected than uninfected cells. This phenomenon of trans-acting transcriptional activation may involve either virally or cellularly encoded factors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hess, J L -- Clements, J E -- Narayan, O -- NS-15721/NS/NINDS NIH HHS/ -- NS-16145/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 Aug 2;229(4712):482-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2990051" target="_blank"〉PubMed〈/a〉
    Keywords: Acetyltransferases/genetics ; Animals ; Base Sequence ; Cell Line ; Chloramphenicol O-Acetyltransferase ; Choroid Plexus ; Chromosome Mapping ; Enhancer Elements, Genetic ; *Genes, Regulator ; Goats ; Humans ; L Cells (Cell Line) ; Macrophages ; Mice ; Plasmids ; Promoter Regions, Genetic ; Sheep ; Synovial Membrane ; T-Lymphocytes ; *Transcription, Genetic ; Transfection ; Visna-maedi virus/*genetics
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  • 59
    Publication Date: 1985-12-13
    Description: Human granulocyte-macrophage colony-stimulating factor (GM-CSF) is a 22,000-dalton glycoprotein that stimulates the growth of myeloid progenitor cells and acts directly on mature neutrophils. A full-length complementary DNA clone encoding human GM-CSF was used as a probe to screen a human genomic library and isolate the gene encoding human GM-CSF. The human GM-CSF gene is approximately 2.5 kilobase pairs in length with at least three intervening sequences. The GM-CSF gene was localized by somatic cell hybrid analysis and in situ hybridization to human chromosome region 5q21-5q32, which is involved in interstitial deletions in the 5q- syndrome and acute myelogenous leukemia. An established, human promyelocytic leukemia cell line, HL60, contains a rearranged, partially deleted GM-CSF allele and a candidate 5q- marker chromosome, indicating that the truncated GM-CSF allele may reside at the rejoining point for the interstitial deletion on the HL60 marker chromosome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huebner, K -- Isobe, M -- Croce, C M -- Golde, D W -- Kaufman, S E -- Gasson, J C -- CA-10805/CA/NCI NIH HHS/ -- CA-16685/CA/NCI NIH HHS/ -- CA-21124/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1985 Dec 13;230(4731):1282-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2999978" target="_blank"〉PubMed〈/a〉
    Keywords: Anemia/genetics ; Base Sequence ; Cell Line ; Chromosome Aberrations/*genetics ; Chromosome Deletion ; Chromosome Disorders ; Chromosome Mapping ; *Chromosomes, Human, 4-5 ; Colony-Stimulating Factors/*genetics ; DNA Restriction Enzymes ; Genes ; Granulocytes ; Humans ; Leukemia, Myeloid, Acute/genetics ; Macrophages ; Syndrome
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  • 60
    Publication Date: 1985-09-27
    Description: Infection of normal peripheral blood T cells by the acquired immune deficiency syndrome (AIDS)-associated retrovirus (ARV) was evaluated in long-term cultures of helper-inducer T cells (T4 cells). Cells that were inoculated with ARV and maintained in medium supplemented with interleukin-2 remained productively infected with this virus for more than 4 months in culture, although they showed no cytopathic effects characteristic of acute ARV infection. The presence of replicating virus was demonstrated by reverse transcriptase activity of culture fluids and by viral antigens and budding particles detected on cells by immunofluorescence and electron microscopy. Virus produced in these cultures remained infectious and could induce cytopathic effects and viral antigens in uninfected lymphoid cells. The finding that normal lymphocytes may be productively infected by an AIDS retrovirus in the absence of cell death suggests that a range of biologic effects may occur after infection in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoxie, J A -- Haggarty, B S -- Rackowski, J L -- Pillsbury, N -- Levy, J A -- CA-34980/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Sep 27;229(4720):1400-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2994222" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/immunology/*microbiology ; Antigens, Viral/immunology ; Cells, Cultured ; Deltaretrovirus/immunology ; Humans ; Microscopy, Fluorescence ; Retroviridae Infections/immunology/microbiology ; T-Lymphocytes/*microbiology
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  • 61
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-12-13
    Description: The pol gene of Rous sarcoma virus is positioned downstream of the gag gene in a different, briefly overlapping reading frame; nevertheless, the primary translation product of pol is a gag-pol fusion protein. Two mechanisms, ribosomal frameshifting and RNA splicing, have been considered to explain this phenomenon. The frameshifting model is supported by synthesis of both gag protein and gag-pol fusion protein in a cell-free mammalian translation system programmed by a single RNA species that was synthesized from cloned viral DNA with a bacteriophage RNA polymerase. Under these conditions, the ratio of the gag protein to the fusion protein (about 20 to 1) is similar to that previously observed in infected cells, the frameshifting is specific for the gag-pol junction, and it is unaffected by large deletions in gag. In addition, synthesis of the fusion protein is ten times less efficient in an Escherichia coli cell-free translation system and cannot be explained by transcriptional errors or in vitro modification of the RNA. Ribosomal frameshifting may affect production of other proteins in higher eukaryotes, including proteins encoded by several retroviruses and transposable elements.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jacks, T -- Varmus, H E -- New York, N.Y. -- Science. 1985 Dec 13;230(4731):1237-42.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2416054" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avian Sarcoma Viruses/*genetics ; Base Sequence ; Cell-Free System ; *Gene Expression Regulation ; Gene Products, gag ; Molecular Weight ; *Protein Biosynthesis ; RNA, Messenger/genetics ; RNA, Viral/genetics ; RNA-Directed DNA Polymerase/*genetics ; Rabbits ; Retroviridae Proteins/genetics ; Ribosomes/*metabolism
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  • 62
    Publication Date: 1985-07-19
    Description: Post-infectious or post-vaccinal demyelinating encephalomyelitis and neuritis may be due to immunological cross-reactions evoked by specific viral antigenic determinants (epitopes) that are homologous to regions in the target myelins of the central and peripheral nervous systems. Such homologies have been found by computer searches in which decapeptides in two human myelin proteins were compared with proteins of viruses known to infect humans. These viruses include measles, Epstein-Barr, influenza A and B, and others that cause upper respiratory infections. Several regions identified in myelin basic protein and P2 protein can be related to experimental allergic encephalomyelitis or neuritis in laboratory animals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jahnke, U -- Fischer, E H -- Alvord, E C Jr -- AM07902/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1985 Jul 19;229(4710):282-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2409602" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chickens ; Encephalomyelitis/etiology/immunology/*metabolism ; Epitopes ; Guinea Pigs ; Haplorhini ; Humans ; Measles/metabolism ; Myelin Basic Protein/genetics ; Myelin P2 Protein ; Neuritis/etiology/immunology/*metabolism ; Rabbits ; Rats ; Rats, Inbred Lew ; Viral Proteins/*genetics ; Viral Vaccines/adverse effects/immunology
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  • 63
    Publication Date: 1985-01-18
    Description: The T-cell receptor for antigen (Ti) was purified from the human tumor cell line HPB-ALL. Amino-terminal sequence analysis of an acid-cleaved peptide of the Ti alpha chain showed that it is highly homologous to a putative murine alpha chain recently described. Amino-terminal sequence analysis of the Ti beta chain revealed that it shares 50 percent homology with the Ti beta chain amino acid sequences from two other human T-cell tumors. Nucleotide sequence analysis of a complementary DNA clone encoding the Ti beta chain from the HPB-MLT cell line showed that this chain represents a second human constant region gene segment and suggested that it arises from direct joining of the variable and joining gene segments without any intervening D region sequences.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jones, N -- Leiden, J -- Dialynas, D -- Fraser, J -- Clabby, M -- Kishimoto, T -- Strominger, J L -- Andrews, D -- Lane, W -- Woody, J -- 5 R01 AI15669/AI/NIAID NIH HHS/ -- AI10736/AI/NIAID NIH HHS/ -- Y001CP00502/CP/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Jan 18;227(4684):311-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3871253" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Humans ; Immunoglobulin Constant Regions/genetics ; Leukemia, Lymphoid/immunology ; Lymphoma/immunology ; Mice ; Nucleic Acid Hybridization ; Receptors, Antigen, T-Cell/*genetics ; T-Lymphocytes/*immunology
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  • 64
    Publication Date: 1985-12-20
    Description: Crystals have been grown that contain the operator-binding domain of the lambda repressor and the lambda operator site OL1. Crystallization conditions were tested with a set of DNA fragments, ranging in length from 17 to 23 base pairs. The best crystals were grown with a 20-base pair DNA fragment. These crystals have space-group symmetry P2I, with unit cell dimensions a = 37.1 A, b = 68.8 A, c = 56.8 A, and a beta angle of 91.5 degrees. They diffracted to at least 2.5 A resolution. High resolution data from these crystals should allow the direct determination of how a repressor recognizes its operator site.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jordan, S R -- Whitcombe, T V -- Berg, J M -- Pabo, C O -- GM 31471/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Dec 20;230(4732):1383-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3906896" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Chromatography, High Pressure Liquid ; Crystallization ; DNA, Bacterial/*genetics ; Escherichia coli/genetics ; *Gene Expression Regulation ; Nucleic Acid Conformation ; Protein Conformation ; Repressor Proteins/*genetics/isolation & purification ; Structure-Activity Relationship ; Transcription Factors/*genetics ; X-Ray Diffraction
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  • 65
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-06-14
    Description: While a number of oncogenes are expressed in a cell cycle-dependent manner, their role in the control of cell proliferation can only be established by a direct functional assay. The c-myc protein, upon microinjection into nuclei of quiescent Swiss 3T3 cells, cooperated with platelet-poor plasma in the stimulation of cellular DNA synthesis. This suggests that c-myc protein, like platelet-derived growth factor (PDGF), may act as a competence factor in the cell cycle to promote the progression of cells to S phase. The presence in the medium of an antibody against PDGF abolished DNA synthesis induced by microinjected PDGF; however, the microinjected c-myc protein stimulated DNA synthesis even when its own antibody was present in the medium. The c-myc protein may act as an intracellular competence factor, while PDGF expresses its biological activity only from outside the cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaczmarek, L -- Hyland, J K -- Watt, R -- Rosenberg, M -- Baserga, R -- New York, N.Y. -- Science. 1985 Jun 14;228(4705):1313-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4001943" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Cycle/drug effects ; Cells, Cultured ; DNA/biosynthesis ; Mice ; *Oncogenes ; Platelet-Derived Growth Factor/pharmacology
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  • 66
    Publication Date: 1985-05-17
    Description: Endothelial cells, which line the interior walls of blood vessels, proliferate at the site of blood vessel injury. Knowledge of the factors that control the proliferation of these cells would help elucidate the role of endothelial cells in wound healing, tumor growth, and arteriosclerosis. In vitro, endothelial cells organize into viable, three-dimensional tubular structures in environments that limit cell proliferation. The process of endothelial cell organization was found to result in decreased levels of the sis messenger RNA transcript and increased levels of the messenger RNA transcript for fibronectin. This situation was reversed on transition from the organized structure to a proliferative monolayer. These results suggest a reciprocity for two biological response modifiers involved in the regulation of endothelial cell proliferation and differentiation in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jaye, M -- McConathy, E -- Drohan, W -- Tong, B -- Deuel, T -- Maciag, T -- 14147/PHS HHS/ -- 310765/PHS HHS/ -- 4807/PHS HHS/ -- etc. -- New York, N.Y. -- Science. 1985 May 17;228(4701):882-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3890179" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Differentiation ; Cell Division ; Cells, Cultured ; Culture Media ; Endothelial Growth Factors ; Endothelium/*cytology/metabolism ; Extracellular Matrix/metabolism ; Fibronectins/biosynthesis/genetics ; *Gene Expression Regulation ; Growth Substances/pharmacology ; Humans ; Platelet-Derived Growth Factor/*genetics ; RNA, Messenger/*genetics ; *Transcription, Genetic
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  • 67
    Publication Date: 1985-04-05
    Description: Induction of cytochrome P1-450 has been linked to susceptibility to certain chemically induced cancers in mouse and man. Treatment of the human cell line MCF-7 with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) results in high levels of aryl hydrocarbon (benzo[a]pyrene) hydroxylase (P1-450) activity. This cell line was used to isolate a human P1-450 full-length complementary DNA (cDNA) clone. The cDNA is 2566 nucleotides in length, encodes a polyadenylated messenger RNA (2.8 kilobases in length), and has a continuous reading frame producing a protein with 512 residues (molecular weight, 58,151). The human P1-450 cDNA and protein are 63 percent and 80 percent similar to mouse P1-450 cDNA and protein, respectively. Whereas the mouse TCDD-inducible P-450 gene subfamily has two members (P1-450 and P3-450), the human TCDD-inducible gene subfamily appears to have only one gene (P1-450).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jaiswal, A K -- Gonzalez, F J -- Nebert, D W -- New York, N.Y. -- Science. 1985 Apr 5;228(4695):80-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3838385" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Carcinogens/pharmacology ; Cell Line ; Cricetinae ; Cytochrome P-450 Enzyme System/*genetics ; DNA/*genetics ; Dioxins/*pharmacology ; Enzyme Induction ; Humans ; Mice ; Nucleic Acid Hybridization ; Rabbits ; Tetrachlorodibenzodioxin/*pharmacology
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  • 68
    Publication Date: 1985-10-18
    Description: Complementary DNA (cDNA) clones encoding human macrophage-specific specific colony-stimulating factor (CSF-1) were isolated. One cDNA clone codes for a mature polypeptide of 224 amino acids and a putative leader of 32 amino acids. This cDNA, which was cloned in the Okayama-Berg expression vector, specifies the synthesis of biologically active CSF-1 in COS cells, as determined by a specific radioreceptor assay, macrophage bone marrow colony formation, and antibody neutralization. Most of the cDNA isolates contain part of an intron sequence that changes the reading frame, resulting in an abrupt termination of translation; these cDNA's were inactive in COS cells. The CSF-1 appears to be encoded by a single-copy gene, but its expression results in the synthesis of several messenger RNA species, ranging in size from about 1.5 to 4.5 kilobases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kawasaki, E S -- Ladner, M B -- Wang, A M -- Van Arsdell, J -- Warren, M K -- Coyne, M Y -- Schweickart, V L -- Lee, M T -- Wilson, K J -- Boosman, A -- C32551/PHS HHS/ -- New York, N.Y. -- Science. 1985 Oct 18;230(4723):291-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2996129" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Cell Line ; *Cloning, Molecular ; Colony-Stimulating Factors/*genetics ; DNA/*metabolism ; DNA Restriction Enzymes ; *Genes ; Humans ; Macrophages/*metabolism ; Pancreatic Neoplasms ; RNA, Messenger/genetics ; Transcription, Genetic
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  • 69
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-09-06
    Description: The cellular gene encoding the receptor for epidermal growth factor (EGF) has considerable homology to the oncogene of avian erythroblastosis virus. In a human mammary carcinoma, a DNA sequence was identified that is related to v-erbB but amplified in a manner that appeared to distinguish it from the gene for the EGF receptor. Molecular cloning of this DNA segment and nucleotide sequence analysis revealed the presence of two putative exons in a DNA segment whose predicted amino acid sequence was closely related to, but different from, the corresponding sequence of the erbB/EGF receptor. Moreover, this DNA segment identified a 5-kilobase transcript distinct from the transcripts of the EGF receptor gene. Thus, a new member of the tyrosine kinase proto-oncogene family has been identified on the basis of its amplification in a human mammary carcinoma.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉King, C R -- Kraus, M H -- Aaronson, S A -- New York, N.Y. -- Science. 1985 Sep 6;229(4717):974-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2992089" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Breast Neoplasms/*genetics ; Cell Line ; Cloning, Molecular ; DNA, Neoplasm/*genetics ; Female ; *Gene Amplification ; Gene Expression Regulation ; Humans ; *Oncogenes ; Protein Kinases/*genetics ; Protein-Tyrosine Kinases ; Receptor, Epidermal Growth Factor ; Receptors, Cell Surface/*genetics
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  • 70
    Publication Date: 1985-05-03
    Description: Mutagenesis was studied in cultured F9 embryonal carcinoma cells infected with a variant of Moloney murine leukemia virus. Proviral insertion induced the inactivation of the hypoxanthine phosphoribosyltransferase locus, and the virus was used to isolate the mutated genes rapidly. Mutagenesis by these methods may be useful for the genetic dissection of the various mammalian cell phenotypes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉King, W -- Patel, M D -- Lobel, L I -- Goff, S P -- Nguyen-Huu, M C -- New York, N.Y. -- Science. 1985 May 3;228(4699):554-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3838595" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; DNA/genetics ; DNA, Neoplasm/genetics ; DNA, Recombinant/metabolism ; DNA, Viral/genetics ; Mice ; Moloney murine leukemia virus/physiology ; *Mutation ; Nucleic Acid Hybridization ; Rats ; Retroviridae/*physiology ; Teratoma/*genetics/microbiology
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  • 71
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-05-17
    Description: Primary cultures of astrocytes from neonatal rat brain were incubated with tritiated serotonin. After fixation they were stained by immunofluorescence for the astrocyte-specific marker glial fibrillary acidic protein and processed for autoradiography. Silver grain density was increased over cells positive for glial fibrillary acidic protein and was reduced to background levels when sodium was omitted from the medium or the specific inhibitors of serotonin uptake fluoxetine and chlorimipramine were present. The results indicate that mammalian astrocytes can take up serotonin by a sodium-dependent, high-affinity system previously thought to be the exclusive property of serotonergic nerve endings.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kimelberg, H K -- Katz, D M -- NS 19492/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 May 17;228(4701):889-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3890180" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Astrocytes/analysis/drug effects/*metabolism ; Autoradiography ; Biological Transport ; Cells, Cultured ; Clomipramine/pharmacology ; Fluorescent Antibody Technique ; Fluoxetine/pharmacology ; Glial Fibrillary Acidic Protein/analysis ; Rats ; Serotonin/*metabolism ; Sodium/pharmacology
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  • 72
    Publication Date: 1985-08-09
    Description: Microfluorometric recordings were made of changes in the concentration of cytosolic-free calcium in cultured rat vascular smooth muscle cells treated with quin 2, an intracellularly trapped dye, under several conditions. Nitroglycerin decreased calcium in both the presence and absence of extracellular calcium and strongly and progressively decreased the extent of transient increases in calcium induced by repeated applications of caffeine in the absence of extracellular calcium. Therefore nitroglycerin probably decreases cytosolic-free calcium by accelerating the extrusion of calcium through the sarcolemmal membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kobayashi, S -- Kanaide, H -- Nakamura, M -- New York, N.Y. -- Science. 1985 Aug 9;229(4713):553-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3927484" target="_blank"〉PubMed〈/a〉
    Keywords: Aminoquinolines ; Animals ; Aorta ; Caffeine/pharmacology ; Calcium/*metabolism ; Cell Nucleus/metabolism ; Cells, Cultured ; Cytosol/metabolism ; Fluorescent Antibody Technique ; Fluorescent Dyes ; Microscopy, Fluorescence ; Muscle, Smooth, Vascular/drug effects/*metabolism ; Nitroglycerin/pharmacology ; Photomicrography ; Potassium/pharmacology ; Rats
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  • 73
    Publication Date: 1985-10-04
    Description: Apolipoprotein (apo-) B is the ligand responsible for the receptor-mediated catabolism of low density lipoproteins, the principal cholesterol-transporting lipoproteins in plasma. The primary structure of the carboxyl-terminal 30 percent (1455 amino acids) of human apo-B (apo-B100) has been deduced from the nucleotide sequence of complementary DNA. Portions of the protein structure that may relate to its receptor binding function and lipid binding properties have been identified. The apo-B100 messenger RNA is about 19 kilobases in length. The apo-B100 gene is expressed primarily in liver and, to a lesser extent, in small intestine, but in no other tissues. The gene for apo-B100 is located in the p24 region (near the tip of the short arm) of chromosome 2.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knott, T J -- Rall, S C Jr -- Innerarity, T L -- Jacobson, S F -- Urdea, M S -- Levy-Wilson, B -- Powell, L M -- Pease, R J -- Eddy, R -- Nakai, H -- GM 20454/GM/NIGMS NIH HHS/ -- HO 05196/HO/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1985 Oct 4;230(4721):37-43.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2994225" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Apolipoprotein B-100 ; Apolipoproteins B/analysis/*genetics ; Apolipoproteins E/analysis ; Base Sequence ; *Chromosome Mapping ; Chromosomes, Human, 1-3 ; DNA/analysis ; DNA Restriction Enzymes/metabolism ; Female ; *Gene Expression Regulation ; Haplorhini ; Humans ; Intestine, Small/metabolism ; Lipid Metabolism ; Lipoproteins, LDL/metabolism ; Liver/metabolism ; Mice ; RNA, Messenger/analysis ; Receptors, LDL/metabolism ; Structure-Activity Relationship
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  • 74
    Publication Date: 1985-06-07
    Description: Infection of human T cells by human T-lymphotropic virus, type I (HTLV-I), a retrovirus, is uniformly associated with the constitutive expression of large numbers of cellular receptors for interleukin-2 (IL-2). Comparison with normal T cells shows that neither IL-2 receptor gene organization nor IL-2 receptor messenger RNA processing are altered in the leukemic cells. However, mitogenic stimuli activate IL-2 receptor gene expression in normal T cells, whereas these stimuli paradoxically inhibit IL-2 receptor gene transcription in HTLV-I-infected leukemic T cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kronke, M -- Leonard, W J -- Depper, J M -- Greene, W C -- New York, N.Y. -- Science. 1985 Jun 7;228(4704):1215-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2988127" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Nucleus/physiology ; Cells, Cultured ; DNA/genetics ; Deltaretrovirus ; Humans ; Leukemia/*genetics ; Molecular Weight ; Poly A/genetics ; RNA, Messenger/genetics ; Receptors, Immunologic/*genetics ; Receptors, Interleukin-2 ; T-Lymphocytes/microbiology/*physiology ; Transcription, Genetic
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  • 75
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-03-08
    Description: Cholesterol accumulates within smooth muscle cells and macrophages in atherosclerotic lesions, thereby contributing to the progressive enlargement of these lesions. The mechanism of this cellular accumulation of cholesterol is not known. The possibility that platelets may have a role in the cellular cholesterol accumulation that occurs during atherogenesis was investigated. Incubation of thrombin-activated washed rat platelets (or platelet-free supernatants prepared from thrombin-activated platelets) with cultured rat aortic smooth muscle cells induced cholesteryl ester lipid droplet accumulation within the smooth muscle cells. No cholesteryl ester lipid droplets accumulated when smooth muscle cells were incubated with unactivated platelets. Smooth muscle cell lipid droplet accumulation occurred in the absence of serum lipoproteins and was not inhibited by mevinolin, a drug that blocks cholesterol synthesis. These findings suggest that activated platelets may release cholesterol, which can be accumulated by cells and stored as lipid droplets.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kruth, H S -- New York, N.Y. -- Science. 1985 Mar 8;227(4691):1243-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3975612" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aorta/physiopathology ; Arteriosclerosis/*physiopathology ; Blood Platelets/*physiology ; Cells, Cultured ; Cholesterol/*physiology ; Male ; Muscle, Smooth, Vascular/*cytology/physiopathology ; Platelet Aggregation ; Rats ; Rats, Inbred Strains ; Thrombin/physiology
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  • 76
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-06-21
    Description: Repeated administration of morphine in increasing doses delayed normal cell death in the ciliary ganglion of the chick embryo; the effect was completely blocked by naloxone. Survival of spinal motoneurons was not affected. Morphine also inhibited potassium-stimulated synthesis of acetylcholine in ganglion cells cultured with muscle, suggesting that morphine can influence neurotransmission. Morphine's effect on cell death may be due to an inhibition of transmission at the neuromuscular junction, but opiates may also directly affect cell death. Although it is now known whether the endogenous opiates in the ciliary ganglion influence neuronal survival during embryogenesis, exogenous opiates can affect normal cell death in the autonomic nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meriney, S D -- Gray, D B -- Pilar, G -- NS 10338/NS/NINDS NIH HHS/ -- NS 19640/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 Jun 21;228(4706):1451-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2990029" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/metabolism ; Animals ; Birds ; Cell Survival/*drug effects ; Cells, Cultured ; Ganglia, Parasympathetic/*cytology/drug effects/metabolism ; Morphine/*pharmacology ; Naloxone/pharmacology ; Potassium/pharmacology ; Spinal Nerves/drug effects ; Synaptic Transmission/drug effects
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  • 77
    Publication Date: 1985-04-05
    Description: A bovine retinal complementary DNA clone encoding the alpha subunit of transducin (T alpha) was isolated with the use of synthetic oligodeoxynucleotides as probes, and the complete nucleotide sequence of the insert was determined. THe predicted protein sequence of 354 amino acids includes the known sequences of four tryptic peptides and sequences adjacent to the residues that undergo adenosine diphosphate ribosylation by cholera toxin and pertussis toxin. On the basis of homologies to other proteins, such as the elongation factors of protein synthesis and the ras oncogene proteins, regions are identified that are predicted to be acylated and involved in guanine nucleotide binding and hydrolysis. Amino acid sequence similarity between T alpha and ras is confined to these regions of the molecules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lochrie, M A -- Hurley, J B -- Simon, M I -- New York, N.Y. -- Science. 1985 Apr 5;228(4695):96-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3856323" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Bacterial Toxins/metabolism ; Base Sequence ; Cattle ; Cholera Toxin/metabolism ; Cloning, Molecular ; DNA/genetics ; Guanosine Triphosphate/metabolism ; Membrane Proteins/*genetics/metabolism ; *Oncogenes ; Peptide Elongation Factors/*genetics ; Pertussis Toxin ; Transducin ; Virulence Factors, Bordetella
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  • 78
    Publication Date: 1985-09-27
    Description: When vole cells that had been transformed by Rous sarcoma virus were treated with the tumor-promoting phorbol ester 12-O-tetradecanoyl-13-acetate (TPA), specific phosphorylation of pp60v-src was increased. Partial V8 protease mapping indicated that the increased phosphorylation occurred exclusively on serine residues located in the amino terminus of the molecule. Treatment of cells with dimethyl sulfoxide or 4 alpha-phorbol-12,13-didecanoate did not elicit this response. Two-dimensional tryptic phosphopeptide mapping of pp60v-src immunoprecipitated from untreated and TPA-treated cells indicated that a specific tryptic amino-terminal peptide was hyperphosphorylated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Purchio, A F -- Shoyab, M -- Gentry, L E -- New York, N.Y. -- Science. 1985 Sep 27;229(4720):1393-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2994221" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arvicolinae ; Carcinogens/*pharmacology ; Cell Transformation, Neoplastic/metabolism ; Cells, Cultured ; Dimethyl Sulfoxide/pharmacology ; Mice ; Mice, Inbred BALB C ; Oncogene Protein pp60(v-src) ; Phorbol Esters/pharmacology ; Phosphorylation ; Protein Kinase C ; Protein Kinases/metabolism ; Receptor, Epidermal Growth Factor ; Receptors, Cell Surface/metabolism ; Sarcoma, Avian/*genetics ; Tetradecanoylphorbol Acetate/pharmacology ; Viral Proteins/*metabolism
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  • 79
    Publication Date: 1985-02-01
    Description: The nucleotide sequence of molecular clones of DNA from a retrovirus, ARV-2, associated with the acquired immune deficiency syndrome (AIDS) was determined. Proviral DNA of ARV-2 (9737 base pairs) has long terminal repeat structures (636 base pairs) and long open reading frames encoding gag (506 codons), pol (1003 codons), and env (863 codons) genes. Two additional open reading frames were identified. Significant amino acid homology with several other retroviruses was noted in the predicted product of gag and pol, but ARV-2 was as closely related to murine and avian retroviruses as it was to human T-cell leukemia viruses (HTLV-I and HTLV-II). By means of an SV-40 vector in transfected simian cells, the cloned gag and env genes of ARV-2 were shown to express viral proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sanchez-Pescador, R -- Power, M D -- Barr, P J -- Steimer, K S -- Stempien, M M -- Brown-Shimer, S L -- Gee, W W -- Renard, A -- Randolph, A -- Levy, J A -- New York, N.Y. -- Science. 1985 Feb 1;227(4686):484-92.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2578227" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*microbiology ; Amino Acid Sequence ; Base Sequence ; Cloning, Molecular ; Codon ; DNA, Viral/*genetics ; Deltaretrovirus/genetics ; Gene Products, gag ; Genes, Viral ; Humans ; Nucleic Acid Conformation ; RNA-Directed DNA Polymerase/biosynthesis/genetics ; Repetitive Sequences, Nucleic Acid ; Retroviridae/*genetics ; Viral Envelope Proteins/biosynthesis/genetics ; Viral Proteins/biosynthesis/*genetics
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  • 80
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-02-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1985 Feb 1;227(4686):503.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2981436" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*microbiology ; Base Sequence ; Deltaretrovirus/*genetics ; *Genes, Viral ; Humans ; Retroviridae/*genetics
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  • 81
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-01-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1985 Jan 11;227(4683):156-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2981426" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/microbiology ; Base Sequence ; Cell Transformation, Viral ; Deltaretrovirus/*classification/genetics ; Gene Expression Regulation ; RNA, Viral ; T-Lymphocytes/microbiology
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  • 82
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-05-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1985 May 31;228(4703):1076-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3873111" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cloning, Molecular ; Genes ; Humans ; Interleukin-1/*genetics
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  • 83
    Publication Date: 1985-10-04
    Description: A model was developed for the structure of p21, the protein with a molecular weight of 21,000 that is produced by the ras genes. This model predicts that p21 consists of a central core of beta-sheet structure, connected by loops and alpha helices. Four of these loops comprise the guanine nucleotide binding site. The phosphoryl binding region is made up of amino acid sequences from 10 to 16 and from 57 to 63 of p21. The latter sequence may contain a site for magnesium binding. Amino acids defining guanine specificity are Asn-116 and Asp-119, and sequences around amino acid 145 may contribute to guanine binding. The model makes it possible to visualize how oncogenic mutations of p21 affect interaction with guanine nucleotides.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCormick, F -- Clark, B F -- la Cour, T F -- Kjeldgaard, M -- Norskov-Lauritsen, L -- Nyborg, J -- New York, N.Y. -- Science. 1985 Oct 4;230(4721):78-82.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3898366" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids/analysis ; Animals ; *Aspartate Carbamoyltransferase ; Base Sequence ; Binding Sites ; *Carbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing) ; Cattle ; *Dihydroorotase ; Escherichia coli ; Guanine Nucleotides/metabolism ; Humans ; Macromolecular Substances ; Magnesium/metabolism ; Membrane Proteins/analysis ; Models, Chemical ; *Multienzyme Complexes ; Mutation ; *Oncogenes ; Peptide Elongation Factor Tu ; Peptide Elongation Factors/analysis ; Protein Conformation ; Proteins/*analysis ; RNA, Transfer, Amino Acyl/metabolism ; Saccharomyces cerevisiae ; Transducin
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  • 84
    Publication Date: 1985-09-27
    Description: In this study, the joining sequences between chromosomes 14 and 18 on the 14q+ chromosomes of a patient with pre-B-cell leukemia and four patients with follicular lymphoma carrying a t(14;18) chromosome translocation were analyzed. In each case, the involved segment of chromosome 18 has recombined with the immunoglobulin heavy-chain joining segment (JH) on chromosome 14. The sites of the recombination on chromosome 14 are located close to the 5' end of the involved JH segment, where the diversity (D) regions are rearranged with the JH segments in the production of active heavy-chain genes. As extraneous nucleotides (N regions) were observed at joining sites and specific signal-like sequences were detected on chromosome 18 in close proximity to the breakpoints, it is concluded that the t(14;18) chromosome translocation is the result of a mistake during the process of VDJ joining at the pre-B-cell stage of differentiation. The putative recombinase joins separated DNA segments on two different chromosomes instead of joining separated segments on the same chromosome, causing a t(14;18) chromosome translocation in the involved B cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tsujimoto, Y -- Gorham, J -- Cossman, J -- Jaffe, E -- Croce, C M -- CA 16685/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Sep 27;229(4720):1390-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3929382" target="_blank"〉PubMed〈/a〉
    Keywords: *B-Lymphocytes ; Base Sequence ; Cell Transformation, Neoplastic/metabolism ; Chromosomes, Human, 13-15/*ultrastructure ; Chromosomes, Human, 16-18/*ultrastructure ; DNA, Neoplasm/genetics ; Humans ; Immunoglobulin Heavy Chains/genetics ; Immunoglobulin J-Chains/genetics ; Immunoglobulin Variable Region/genetics ; Leukemia/*genetics ; Lymphoma, Follicular/*genetics ; T-Lymphocytes ; *Translocation, Genetic
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  • 85
    Publication Date: 1985-04-12
    Description: Tumor necrosis factor (TNF) is a soluble protein that causes damage to tumor cells but has no effect on normal cells. Human TNF was purified to apparent homogeneity as a 17.3-kilodalton protein from HL-60 leukemia cells and showed cytotoxic and cytostatic activities against various human tumor cell lines. The amino acid sequence was determined for the amino terminal end of the purified protein, and oligodeoxyribonucleotide probes were synthesized on the basis of this sequence. Complementary DNA (cDNA) encoding human TNF was cloned from induced HL-60 messenger RNA and was confirmed by hybrid-selection assay, direct expression in COS-7 cells, and nucleotide sequence analysis. The human TNF cDNA is 1585 base pairs in length and encodes a protein of 233 amino acids. The mature protein begins at residue 77, leaving a long leader sequence of 76 amino acids. Expression of high levels of human TNF in Escherichia coli was accomplished under control of the bacteriophage lambda PL promoter and gene N ribosome binding site.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, A M -- Creasey, A A -- Ladner, M B -- Lin, L S -- Strickler, J -- Van Arsdell, J N -- Yamamoto, R -- Mark, D F -- New York, N.Y. -- Science. 1985 Apr 12;228(4696):149-54.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3856324" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Cells, Cultured ; *Cloning, Molecular ; DNA/*genetics ; DNA, Recombinant/metabolism ; Glycoproteins/*genetics/isolation & purification/pharmacology ; Humans ; Leukemia, Myeloid/metabolism ; Mice ; Mice, Nude ; Neoplasms, Experimental/drug therapy ; Nucleic Acid Hybridization ; RNA, Messenger/genetics ; Rabbits ; Rats ; Tumor Necrosis Factor-alpha ; Xenopus
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  • 86
    Publication Date: 1985-12-20
    Description: A component present in splicing extracts selectively binds the 3' splice site of a precursor messenger RNA (pre-mRNA) transcript of a human beta-globin gene. Since this component can be immunoprecipitated by either autoantibodies of the Sm class or antibodies specifically directed against trimethylguanosine, it is a small nuclear ribonucleoprotein (snRNP). Its interaction with the 3' splice site occurs rapidly even at 0 degrees C, does not require adenosine triphosphate, and is altered by certain mutations in the 3' splice site region. Binding is surprisingly insensitive to treatment of the extract with micrococcal nuclease. The U5 particle is the only abundant Sm snRNP with a capped 5' end that is equally resistant to micrococcal nuclease. This suggests that, in addition to the U1 and U2 snRNP's, U5 snRNP's participate in pre-mRNA splicing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chabot, B -- Black, D L -- LeMaster, D M -- Steitz, J A -- GM-26154/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Dec 20;230(4732):1344-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2933810" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; Globins/genetics ; Humans ; Nucleic Acid Conformation ; Nucleic Acid Precursors/*genetics/metabolism ; Protein Binding ; RNA Precursors ; *RNA Splicing ; RNA, Messenger/*genetics/metabolism ; Ribonucleoproteins/*genetics/metabolism ; Ribonucleoproteins, Small Nuclear ; Transcription, Genetic
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  • 87
    Publication Date: 1985-06-07
    Description: The concentration in plasma of the female protein (FP) of the golden Syrian hamster is regulated by sex steroids and by mediators of the acute-phase response to tissue injury or inflammation. A complementary DNA (cDNA) clone corresponding to FP was isolated from a hamster liver cDNA library and used to determine the nucleotide sequence and derived amino acid sequence of native FP. The primary sequence of FP is 69 percent identical to human serum amyloid P component and 50 percent identical to human C-reactive protein. Evidence showed that sex-limited and acute-phase control of the FP gene is pretranslational. The FP protein is thus a useful model for investigating dual regulation of expression of a single gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dowton, S B -- Woods, D E -- Mantzouranis, E C -- Colten, H R -- AI20959/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1985 Jun 7;228(4704):1206-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2408337" target="_blank"〉PubMed〈/a〉
    Keywords: Acute-Phase Proteins ; Alpha-Globulins/*genetics ; Amino Acid Sequence ; Animals ; Base Sequence ; Blood Proteins/genetics ; *C-Reactive Protein ; Cricetinae/*physiology ; DNA/genetics ; Female ; Gene Expression Regulation ; Genes ; Liver/physiology ; Male ; Mesocricetus/*physiology ; RNA, Messenger/genetics
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  • 88
    Publication Date: 1985-12-06
    Description: A novel potential cell surface receptor of the tyrosine kinase gene family has been identified and characterized by molecular cloning. Its primary sequence is very similar to that of the human epidermal growth factor receptor and the v-erbB oncogene product; the chromosomal location of the gene for this protein is coincident with the neu oncogene, which suggests that the two genes may be identical.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coussens, L -- Yang-Feng, T L -- Liao, Y C -- Chen, E -- Gray, A -- McGrath, J -- Seeburg, P H -- Libermann, T A -- Schlessinger, J -- Francke, U -- New York, N.Y. -- Science. 1985 Dec 6;230(4730):1132-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2999974" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Chromosome Mapping ; Chromosomes, Human, 16-18 ; Chromosomes, Human, 6-12 and X ; DNA/genetics ; Fetus/metabolism ; Humans ; Nucleic Acid Hybridization ; *Oncogenes ; Rats ; Receptor, Epidermal Growth Factor ; Receptors, Cell Surface/*genetics
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  • 89
    Publication Date: 1985-03-22
    Description: Endothelial cell functions, such as arachidonic acid metabolism, may be modulated by membrane stresses induced by blood flow. The production of prostacyclin by primary human endothelial cell cultures subjected to pulsatile and steady flow shear stress was measured. The onset of flow led to a sudden increase in prostacyclin production, which decreased to a steady rate within several minutes. The steady-state production rate of cells subjected to pulsatile shear stress was more than twice that of cells exposed to steady shear stress and 16 times greater than that of cells in stationary culture.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frangos, J A -- Eskin, S G -- McIntire, L V -- Ives, C L -- HL-17437/HL/NHLBI NIH HHS/ -- HL-18672/HL/NHLBI NIH HHS/ -- HL-23016/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1985 Mar 22;227(4693):1477-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3883488" target="_blank"〉PubMed〈/a〉
    Keywords: *Blood Circulation ; Cells, Cultured ; Endothelium/cytology/*metabolism ; Epoprostenol/*biosynthesis ; Humans ; Kinetics ; Models, Biological ; Stress, Mechanical
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  • 90
    Publication Date: 1985-09-20
    Description: A complementary DNA clone encoding the alpha subunit of the adenylate cyclase stimulatory G protein (Gs) was isolated and identified. A bovine brain complementary DNA library was screened with an oligonucleotide probe derived from amino acid sequence common to known G proteins. The only clone that was obtained with this probe has a complementary DNA insert of approximately 1670 base pairs. An antibody to a peptide synthesized according to deduced amino acid sequence reacts specifically with the alpha subunit of Gs. In addition, RNA that hybridizes with probes made from the clone is detected in wild-type S49 cells; however, cyc- S49 cells, which are deficient in Gs alpha activity, are devoid of this messenger RNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harris, B A -- Robishaw, J D -- Mumby, S M -- Gilman, A G -- GM09731/GM/NIGMS NIH HHS/ -- GM34497/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Sep 20;229(4719):1274-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3839937" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclases/*metabolism ; Amino Acid Sequence ; Animals ; Base Sequence ; Cattle ; Cerebral Cortex ; *Cloning, Molecular ; DNA/*analysis ; Enzyme Activation ; Nerve Tissue Proteins/*genetics ; Nucleic Acid Hybridization ; Protein Biosynthesis ; Retina
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  • 91
    Publication Date: 1985-02-15
    Description: Addition of norepinephrine to primary cultures of adult rat hepatocytes stimulates the incorporation of [3H]thymidine in a dose-dependent manner. This effect has been observed in serum-free medium containing epidermal growth factor and insulin. Stimulation of DNA synthesis by norepinephrine was strongly antagonized by the alpha 1-adrenergic antagonist prazosin but not by an alpha 2 antagonist or by a beta-adrenergic blocker. The beta agonist isoproterenol did not stimulate significant DNA synthesis. These results indicate that catecholamines interact with the alpha 1 adrenoreceptor to stimulate DNA synthesis in hepatocytes. Since alpha 1 receptors are present in most cells, this receptor may be important in cell growth regulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cruise, J L -- Houck, K A -- Michalopoulos, G K -- CA 35373/CA/NCI NIH HHS/ -- T32 GM07184/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Feb 15;227(4688):749-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2982212" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; DNA/*biosynthesis ; Epidermal Growth Factor/pharmacology ; Female ; Insulin/pharmacology ; Liver/*cytology ; Liver Regeneration ; Norepinephrine/*physiology ; Prazosin/pharmacology ; Rats ; Receptors, Adrenergic, alpha/drug effects/*physiology ; Yohimbine/pharmacology
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  • 92
    Publication Date: 1985-08-09
    Description: A lymphotropic virus HTLV-III/LAV was recently identified as the etiologic agent of the acquired immune deficiency syndrome (AIDS). In a study of concomitant hepatitis B infections in patients with AIDS or the AIDS-related complex, DNA sequences of hepatitis B virus (HBV) were found in fresh and cultured lymphocytes from patients with AIDS even in the absence of conventional HBV serological markers. Furthermore, the restriction DNA pattern was consistent with the integration of the viral DNA. These results should prompt additional studies to reevaluate a possible role of HBV as a cofactor in AIDS in addition to the HTLV-III/LAV causal agent.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Laure, F -- Zagury, D -- Saimot, A G -- Gallo, R C -- Hahn, B H -- Brechot, C -- New York, N.Y. -- Science. 1985 Aug 9;229(4713):561-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2410981" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*microbiology ; Antibodies, Viral/analysis ; Antigens, Viral/analysis ; Base Sequence ; DNA, Viral/*analysis ; Deltaretrovirus/immunology ; Hepatitis B/complications ; Hepatitis B Antibodies/analysis ; Hepatitis B Surface Antigens/analysis ; Hepatitis B virus/*genetics/immunology ; Humans ; Lymphocytes/*analysis ; RNA-Directed DNA Polymerase/analysis ; Serologic Tests
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  • 93
    Publication Date: 1985-10-18
    Description: A scheme for partial purification of biologically active v-sis-coded protein from cells transformed with simian sarcoma virus (SSV) has made possible a functional comparison of the transforming protein with platelet-derived growth factor (PDGF). The SSV-transforming gene product is capable of specifically binding PDGF receptors, stimulating tyrosine phosphorylation of PDGF receptors, and inducing DNA synthesis in quiescent fibroblasts. Each of these activities was specifically inhibited by antibodies to different regions of the v-sis gene product. Moreover, viral infection of a variety of cell types revealed a strict correlation between those cells possessing PDGF receptors and those susceptible to transformation by SSV. These findings provide evidence that SSV-transforming activity is mediated by the interaction of a virus-coded mitogen with PDGF receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leal, F -- Williams, L T -- Robbins, K C -- Aaronson, S A -- New York, N.Y. -- Science. 1985 Oct 18;230(4723):327-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2996133" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aorta/metabolism ; Cattle ; Cell Line ; *Cell Transformation, Viral ; Cells, Cultured ; Fibroblasts/metabolism ; *Genes ; *Genes, Viral ; Humans ; Kinetics ; Mink ; Molecular Weight ; Muscle, Smooth/metabolism ; Muscle, Smooth, Vascular/metabolism ; Platelet-Derived Growth Factor/*metabolism ; Receptors, Cell Surface/isolation & purification/*metabolism ; Receptors, Platelet-Derived Growth Factor ; Retroviridae/*genetics ; Sarcoma Virus, Woolly Monkey/*genetics ; Viral Proteins/genetics/*metabolism
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  • 94
    Publication Date: 1985-01-11
    Description: The molecular size of the plasma LDL (low density lipoprotein) receptor synthesized by cultured fibroblasts from a patient with the internalization-defective form of familial hypercholesterolemia (FH 274) was smaller by 10,000 daltons than the size of the normal LDL receptor. The segment of the gene encoding the truncated portion of the FH 274 receptor was cloned into bacteriophage lambda. Comparison of the nucleotide sequences of the normal and FH 274 genes revealed a 5-kilobase deletion, which eliminated the exons encoding the membrane-spanning region and the carboxyl terminal cytoplasmic domain of the receptor. The deletion appeared to be caused by a novel intrastrand recombination between two repetitive sequences of the Alu family that were oriented in opposite directions. The truncated receptors lack membrane-spanning regions and cytoplasmic domains; they are largely secreted into the culture medium, but a small fraction remains adherent to the cell surface. The surface-adherent receptors bind LDL, but they are unable to cluster in coated pits, thus explaining the internalization-defective phenotype.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4449727/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4449727/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lehrman, M A -- Schneider, W J -- Sudhof, T C -- Brown, M S -- Goldstein, J L -- Russell, D W -- HL 01287/HL/NHLBI NIH HHS/ -- HL 20948/HL/NHLBI NIH HHS/ -- HL 31346/HL/NHLBI NIH HHS/ -- P01 HL020948/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1985 Jan 11;227(4683):140-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3155573" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteriophage lambda ; Base Sequence ; Cell Membrane ; Cloning, Molecular ; Coated Pits, Cell-Membrane/metabolism ; Cytoplasm ; Fibroblasts ; Genes ; Humans ; Hyperlipoproteinemia Type II/*genetics ; Male ; Molecular Weight ; Mutation ; Receptors, LDL/*genetics ; Recombination, Genetic ; *Repetitive Sequences, Nucleic Acid
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  • 95
    Publication Date: 1985-11-08
    Description: The gene encoding the human interleukin-2 (IL-2) receptor consists of 8 exons spanning more than 25 kilobases on chromosome 10. Exons 2 and 4 were derived from a gene duplication event and unexpectedly also are homologous to the recognition domain of human complement factor B. Alternative messenger RNA (mRNA) splicing may delete exon 4 sequences, resulting in a mRNA that does not encode a functional IL-2 receptor. Leukemic T cells infected with HTLV-I and normal activated T cells express IL-2 receptors with identical deduced protein sequences. Receptor gene transcription is initiated at two principal sites in normal activated T cells. Adult T cell leukemia cells infected with HTLV-I show activity at both of these sites, but also at a third transcription initiation site.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leonard, W J -- Depper, J M -- Kanehisa, M -- Kronke, M -- Peffer, N J -- Svetlik, P B -- Sullivan, M -- Greene, W C -- New York, N.Y. -- Science. 1985 Nov 8;230(4726):633-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2996141" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Cloning, Molecular ; Complement Factor B/genetics ; DNA/genetics/isolation & purification ; DNA, Recombinant/isolation & purification ; Deltaretrovirus ; *Genes, MHC Class II ; Humans ; Peptide Chain Initiation, Translational ; RNA, Messenger/genetics ; Receptors, Immunologic/biosynthesis/*genetics ; Receptors, Interleukin-2 ; Repetitive Sequences, Nucleic Acid ; Retroviridae Infections/genetics ; T-Lymphocytes/microbiology ; Transcription, Genetic
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  • 96
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-07-26
    Description: Nerve growth factor (NGF) is essential for the development and differentiation of sympathetic or sensory neurons. A complementary DNA was cloned that corresponds to a gene sequence induced more than 50-fold in a cultured target cell line of pheochromocytoma cells (PC12 cells) 5 hours after the addition of NGF. The induced messenger RNA encodes a 90,000-dalton polypeptide that may represent one of the primary events in NGF-induced differentiation of neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levi, A -- Eldridge, J D -- Paterson, B M -- New York, N.Y. -- Science. 1985 Jul 26;229(4711):393-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3839317" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/genetics ; Adrenal Gland Neoplasms/genetics ; Animals ; Base Sequence ; Cell Line ; Chickens ; *Cloning, Molecular ; DNA/genetics ; Gene Expression Regulation ; *Genes ; Nerve Growth Factors/*physiology ; Nucleic Acid Hybridization ; Pheochromocytoma/genetics ; RNA, Messenger/genetics ; Rabbits ; Rats
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  • 97
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-10-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1985 Oct 4;230(4721):55.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3849885" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chimera ; Eukaryotic Cells/analysis ; Models, Genetic ; Nucleic Acid Precursors/*metabolism ; Prokaryotic Cells/analysis ; RNA Precursors ; RNA Splicing ; RNA, Messenger/*biosynthesis/*metabolism
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  • 98
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1985-09-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1985 Sep 13;229(4718):1073.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2412291" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA, Mitochondrial/analysis ; Deoxyribonuclease I/genetics ; Neurospora crassa ; RNA Splicing ; RNA-Directed DNA Polymerase/*genetics ; Retroviridae/enzymology/genetics
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  • 99
    Publication Date: 1985-08-23
    Description: The sequence of the entire RNA genome of the type flavivirus, yellow fever virus, has been obtained. Inspection of this sequence reveals a single long open reading frame of 10,233 nucleotides, which could encode a polypeptide of 3411 amino acids. The structural proteins are found within the amino-terminal 780 residues of this polyprotein; the remainder of the open reading frame consists of nonstructural viral polypeptides. This genome organization implies that mature viral proteins are produced by posttranslational cleavage of a polyprotein precursor and has implications for flavivirus RNA replication and for the evolutionary relation of this virus family to other RNA viruses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rice, C M -- Lenches, E M -- Eddy, S R -- Shin, S J -- Sheets, R L -- Strauss, J H -- AI 10793/AI/NIAID NIH HHS/ -- AI 20612/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1985 Aug 23;229(4715):726-33.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4023707" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Biological Evolution ; Gene Expression Regulation ; Genes ; Glycoproteins/genetics ; Nucleic Acid Conformation ; Protein Biosynthesis ; Protein Conformation ; Protein Processing, Post-Translational ; RNA, Viral/*genetics ; Viral Proteins/*genetics ; *Virus Replication ; Yellow fever virus/*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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  • 100
    Publication Date: 1985-07-12
    Description: Supernatants from cultures of human monocytes that had been stimulated with endotoxin or silica induced the synthesis of prostacyclin in endothelial and smooth muscle cells. The lymphokine mediating these effects on the cells of the blood vessel wall was identified as interleukin-1; interferons and interleukin-2 were inactive. Interleukin-1-induced prostacyclin synthesis represents a new aspect of the interaction between the immune system (as well as other tissues) and the vessel wall and may serve as a basis for the development of new strategies in antithrombotic therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rossi, V -- Breviario, F -- Ghezzi, P -- Dejana, E -- Mantovani, A -- New York, N.Y. -- Science. 1985 Jul 12;229(4709):174-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2409598" target="_blank"〉PubMed〈/a〉
    Keywords: Blood Vessels/*metabolism ; Cells, Cultured ; Endothelium/*metabolism ; Epoprostenol/*biosynthesis ; Humans ; Interferons/pharmacology ; Interleukin-1/*pharmacology ; Interleukin-2/pharmacology ; Monocytes/physiology ; Muscle, Smooth/*metabolism ; Time Factors
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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