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  • Base Sequence  (81)
  • *Ecosystem
  • American Association for the Advancement of Science (AAAS)  (82)
  • American Chemical Society
  • Wiley
  • 2020-2022
  • 2005-2009
  • 1985-1989  (82)
  • 1965-1969
  • 1935-1939
  • 1988  (82)
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  • American Association for the Advancement of Science (AAAS)  (82)
  • American Chemical Society
  • Wiley
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  • 2020-2022
  • 2005-2009
  • 1985-1989  (82)
  • 1965-1969
  • 1935-1939
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  • 11
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    Molecular cloning of two types of GAP complementary DNA from human placenta (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1988-12-23
    Beschreibung: The ras p21 GTPase-activating protein (GAP) was purified from human placental tissue. Internal amino acid sequence was obtained from this 120,000-dalton protein and, by means of this sequence, two types of complementary DNA clones were isolated and characterized. One type encoded GAP with a predicted molecular mass of 116,000 daltons and 96% identity with bovine GAP. The messenger RNA of this GAP was detected in human lung, brain, liver, leukocytes, and placenta. The second type appeared to be generated by a differential splicing mechanism and encoded a novel form of GAP with a predicted molecular mass of 100,400 daltons. This protein lacks the hydrophobic amino terminus characteristic of the larger species, but retains GAP activity. The messenger RNA of this type was abundantly expressed in placenta and in several human cell lines, but not in adult tissues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Trahey, M -- Wong, G -- Halenbeck, R -- Rubinfeld, B -- Martin, G A -- Ladner, M -- Long, C M -- Crosier, W J -- Watt, K -- Koths, K -- New York, N.Y. -- Science. 1988 Dec 23;242(4886):1697-700.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Cetus Corp., Emeryville, CA 94608.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3201259" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Base Sequence ; Brain Chemistry ; *Cloning, Molecular ; DNA/*genetics/isolation & purification ; Female ; GTPase-Activating Proteins ; Gene Expression Regulation ; Humans ; Leukocytes/analysis ; Liver/analysis ; Lung/analysis ; Molecular Sequence Data ; Molecular Weight ; Nucleic Acid Hybridization ; Oligonucleotide Probes ; Placenta/*analysis ; Pregnancy ; Proteins/*genetics/isolation & purification ; RNA, Messenger/analysis/genetics ; Sequence Homology, Nucleic Acid ; ras GTPase-Activating Proteins
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 12
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    Functional expression of a new pharmacological subtype of brain nicotinic acetylcholine receptor (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1988-04-15
    Beschreibung: A new type of agonist-binding subunit of rat neuronal nicotinic acetylcholine receptors (nAChRs) was identified. Rat genomic DNA and complementary DNA encoding this subunit (alpha 2) were cloned and analyzed. Complementary DNA expression studies in Xenopus oocytes revealed that the injection of messenger RNAs (mRNAs) for alpha 2 and beta 2 (a neuronal nAChR subunit) led to the generation of a functional nAChR. In contrast to the other known neuronal nAChRs, the receptor produced by the injection of alpha 2 and beta 2 mRNAs was resistant to the alpha-neurotoxin Bgt3.1. In situ hybridization histochemistry showed that alpha 2 mRNA was expressed in a small number of regions, in contrast to the wide distribution of the other known agonist-binding subunits (alpha 3 and alpha 4) mRNAs. These results demonstrate that the alpha 2 subunit differs from other known agonist-binding alpha-subunits of nAChRs in its distribution in the brain and in its pharmacology.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wada, K -- Ballivet, M -- Boulter, J -- Connolly, J -- Wada, E -- Deneris, E S -- Swanson, L W -- Heinemann, S -- Patrick, J -- New York, N.Y. -- Science. 1988 Apr 15;240(4850):330-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Salk Institute for Biological Studies, San Diego, CA 92138.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2832952" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; Brain/*metabolism ; DNA Restriction Enzymes ; Female ; *Genes ; Molecular Sequence Data ; Neurons/metabolism ; Nucleotide Mapping ; Oocytes/metabolism ; Rats ; Receptors, Nicotinic/*genetics/metabolism ; Transcription, Genetic ; Xenopus laevis
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 13
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    Large microtubule-associated protein of T. brucei has tandemly repeated, near-identical sequences (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1988-07-22
    Beschreibung: The parasitic protozoon Trypanosoma brucei contains a highly organized membrane skeleton, consisting of a dense array of parallel, singlet microtubules that are laterally interconnected and that are also in tight contact with the overlying cell membrane. A high molecular weight, heat-stable protein from this membrane skeleton was isolated that is localized along the microtubules. Protease digestion experiments and sequencing of a cloned gene segment showed that most of the protein is built up by more than 50 nearly identical tandem repeats with a periodicity of 38 amino acids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schneider, A -- Hemphill, A -- Wyler, T -- Seebeck, T -- New York, N.Y. -- Science. 1988 Jul 22;241(4864):459-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur allgemeine Mikrobiologie, Universitat Bern, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3393912" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; Cell Compartmentation ; Cell Membrane/ultrastructure ; Cloning, Molecular ; Microscopy, Electron ; Microtubule-Associated Proteins/*analysis/genetics ; Microtubules/ultrastructure ; Molecular Sequence Data ; Molecular Weight ; Repetitive Sequences, Nucleic Acid ; Trypanosoma brucei brucei/*analysis/genetics/ultrastructure
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 14
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    Intron existence predated the divergence of eukaryotes and prokaryotes (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1988-11-25
    Beschreibung: Nucleotide sequences for the nuclear genes encoding chloroplast (GapA and GapB) and cytosolic (GapC) glyceraldehyde-3-phosphate dehydrogenases (GAPDHs) from Arabidopsis thaliana were determined. Comparison of nucleotide sequences indicates that the divergence of chloroplast and cytosolic GAPDH genes preceded the divergence of prokaryotes and eukaryotes. In addition, some intron-exon junctions are conserved among GapB, GapC, and chicken GAPDH genes. These results provide evidence at the molecular level to support the idea that introns existed before the divergence of prokaryotes and eukaryotes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shih, M C -- Heinrich, P -- Goodman, H M -- New York, N.Y. -- Science. 1988 Nov 25;242(4882):1164-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, Boston, MA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3055302" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Binding Sites ; *Biological Evolution ; *Cells ; Chickens/genetics ; Chloroplasts/enzymology ; Cytosol/enzymology ; Escherichia coli/genetics ; *Eukaryotic Cells ; Exons ; Glyceraldehyde-3-Phosphate Dehydrogenases/*genetics/metabolism ; *Introns ; Molecular Sequence Data ; NAD/metabolism ; NADP/metabolism ; Plants/genetics ; *Prokaryotic Cells
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 15
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    A novel gene of HIV-1, vpu, and its 16-kilodalton product (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1988-09-02
    Beschreibung: A 16-kilodalton protein expressed in cells producing the human immunodeficiency virus (HIV-1) was identified as the gene product of the vpu open reading frame. When expressed in vitro, the 81-amino acid vpu protein reacted with about one-third of the serum samples from AIDS patients that were tested, indicating that the vpu open reading frame is expressed in vivo as well. Introduction of a frame-shift mutation into the vpu open reading frame did not significantly interfere with expression of the major viral proteins in a transient expression system. However, a five- to tenfold reduction in progeny virions was observed after the infection of T lymphocytes with the mutant virus. These data suggest that the vpu gene product is required for efficient virus replication and may have a role in assembly or maturation of progeny virions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Strebel, K -- Klimkait, T -- Martin, M A -- New York, N.Y. -- Science. 1988 Sep 2;241(4870):1221-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3261888" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acquired Immunodeficiency Syndrome/immunology ; Base Sequence ; DNA, Viral/genetics ; Electrophoresis, Polyacrylamide Gel ; *Genes, Viral ; HIV/*genetics/physiology ; Humans ; Immune Sera/immunology ; Immunoassay ; Mutation ; Protein Biosynthesis ; RNA, Viral/genetics ; T-Lymphocytes/microbiology ; Transcription, Genetic ; Viral Proteins/*genetics/immunology/physiology ; Virus Replication
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 16
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    Cloning and expression of the human interleukin-6 (BSF-2/IFN beta 2) receptor (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1988-08-12
    Beschreibung: Interleukin-6 (IL-6/BSF-2/IFN beta 2) is a multifunctional cytokine that regulates the growth and differentiation of various tissues, and is known particularly for its role in the immune response and acute phase reactions. A complementary DNA encoding the human IL-6 receptor (IL-6-R) has now been isolated. The IL-6-R consists of 468 amino acids, including a signal peptide of approximately 19 amino acids and a domain of approximately 90 amino acids that is similar to a domain in the immunoglobulin (Ig) superfamily. The cytoplasmic domain of approximately 82 amino acids lacks a tyrosine/kinase domain, unlike other growth factor receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yamasaki, K -- Taga, T -- Hirata, Y -- Yawata, H -- Kawanishi, Y -- Seed, B -- Taniguchi, T -- Hirano, T -- Kishimoto, T -- New York, N.Y. -- Science. 1988 Aug 12;241(4867):825-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Immunology, Osaka University, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3136546" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Base Sequence ; Cell Line ; *Cloning, Molecular ; DNA/genetics/isolation & purification ; *Genes ; Humans ; Immunoglobulin kappa-Chains/genetics ; Molecular Sequence Data ; Receptors, Immunologic/genetics ; Receptors, Interleukin-6 ; Sequence Homology, Nucleic Acid ; *Transcription, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 17
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    Calicheamicin gamma 1I: an antitumor antibiotic that cleaves double-stranded DNA site specifically (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1988-05-27
    Beschreibung: Calicheamicin gamma 1I is a recently discovered diyne-ene--containing antitumor antibiotic with considerable potency against murine tumors. In vitro, this drug interacts with double-helical DNA in the minor groove and causes site-specific double-stranded cleavage. It is proposed that the observed cleavage specificity is a result of a unique fit of the drug and DNA followed by the generation of a nondiffusible 1,4-dehydrobenzene--diradical species that initiates oxidative strand scission by hydrogen abstraction on the deoxyribose ring. The ability of calicheamicin gamma 1I to cause double-strand cuts at very low concentrations may account for its potent antitumor activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zein, N -- Sinha, A M -- McGahren, W J -- Ellestad, G A -- New York, N.Y. -- Science. 1988 May 27;240(4856):1198-201.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Infectious Disease Research Section, American Cyanamid Company, Lederle Laboratories, Pearl River, NY 10965.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3240341" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Aminoglycosides ; Anti-Bacterial Agents/*pharmacology ; *Antibiotics, Antineoplastic ; Base Sequence ; Dna ; *DNA Damage ; DNA, Superhelical ; Enediynes ; Molecular Sequence Data ; Oxygen ; Substrate Specificity
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 18
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    A point mutation in the c-myc locus of a Burkitt lymphoma abolishes binding of a nuclear protein (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1988-06-24
    Beschreibung: A 20-base pair region in the first intron of the human c-myc gene was identified as the binding site of a nuclear protein. This binding site is mutated in five out of seven Burkitt lymphomas sequenced to date. To investigate the protein-recognition region in greater detail, the abnormal c-myc allele from a Burkitt lymphoma line (PA682) that carries a t(8;22) chromosomal translocation was used. A point mutation in the binding region of the PA682 c-myc DNA abolished binding of this nuclear protein. This protein may be an important factor for control of c-myc expression, and mutations in its recognition sequence may be associated with c-myc activation in many cases of Burkitt lymphoma.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zajac-Kaye, M -- Gelmann, E P -- Levens, D -- New York, N.Y. -- Science. 1988 Jun 24;240(4860):1776-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medicine Branch, National Cancer Institute, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2454510" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; Burkitt Lymphoma/*genetics ; DNA-Binding Proteins/*metabolism ; Gene Expression Regulation ; Humans ; Molecular Sequence Data ; Mutation ; Nuclear Proteins/*metabolism ; *Oncogenes ; Proto-Oncogene Proteins/*genetics ; RNA/genetics ; RNA, Antisense ; Transcription, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 19
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    Multiplying genes by leaps and bounds (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1988-06-10
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1988 Jun 10;240(4858):1408-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3375831" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; DNA/*genetics ; DNA-Directed DNA Polymerase ; *Gene Amplification ; *Genes, Synthetic ; HIV/genetics ; Humans ; Paleontology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 20
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    Microinjected DNA from the X chromosome affects sex determination in Caenorhabditis elegans (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1988-11-25
    Beschreibung: The signal for sex determination in the nematode Caenorhabditis elegans is the ratio of the number of X chromosomes to the number of sets of autosomes (X/A ratio). By previous genetic tests, elements that feminized chromosomal males appeared to be widespread on the X chromosome, but the nature of these elements was not determined. In experiments to define a feminizing element molecularly, cloned sequences were added to chromosomally male embryos by microinjection into the mother. Three different X-chromosome clones, including part of an actin gene, part of a myosin heavy chain gene, and all of two myosin light chain genes, feminize chromosomal males. Both somatic and germline aspects of sex determination are affected. In contrast, about 40 kilobases of nematode autosomal DNA, phage lambda DNA, and plasmid pBR322 DNA do not affect sex determination. A feminizing region was localized to a maximum of 131 base pairs within an intron of the X-linked actin gene; a part of the gene that does not have this region is not feminizing. The results suggest that short, discrete elements found associated with many X-linked genes may act as signals for sex determination in C. elegans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCoubrey, W K -- Nordstrom, K D -- Meneely, P M -- 5T32CA09437-06/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1988 Nov 25;242(4882):1146-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98104.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2973125" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Actins/genetics ; Animals ; Bacteriophage lambda/genetics ; Base Sequence ; Caenorhabditis/*genetics ; DNA, Recombinant ; DNA, Viral/genetics ; Disorders of Sex Development ; Exons ; Introns ; Male ; Microinjections ; Molecular Sequence Data ; Myosins/genetics ; Phenotype ; Plasmids ; *Sex Determination Analysis ; Transformation, Genetic ; *X Chromosome
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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