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  • Molecular Sequence Data  (94)
  • American Association for the Advancement of Science (AAAS)  (94)
  • American Meteorological Society
  • Blackwell Publishing Ltd
  • Copernicus
  • Hindawi
  • Institute of Electrical and Electronics Engineers
  • Molecular Diversity Preservation International
  • Springer Nature
  • Springer Science + Business Media
  • 2020-2022
  • 2010-2014
  • 1985-1989  (94)
  • 1960-1964
  • 1988  (94)
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  • American Association for the Advancement of Science (AAAS)  (94)
  • American Meteorological Society
  • Blackwell Publishing Ltd
  • Copernicus
  • Hindawi
  • +
Years
  • 2020-2022
  • 2010-2014
  • 1985-1989  (94)
  • 1960-1964
Year
  • 11
    Publication Date: 1988-09-09
    Description: Transcription of protein-encoding genes by human RNA polymerase II requires multiple ancillary proteins (transcription factors). Interactions between these proteins and the promoter DNA of a viral class II gene (the major late transcription unit of adenovirus) were investigated by enzymatic and chemical footprinting. The experiments indicated that the assembly of functionally active RNA polymerase II-containing transcription preinitiation complexes requires a complete set of transcription factors, and that both specific protein-DNA and protein-protein interactions are involved. This allows individual steps along the transcription reaction pathway to be tested directly, thus providing a basis for understanding basic transcription initiation mechanisms as well as the regulatory processes that act on them.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Van Dyke, M W -- Roeder, R G -- Sawadogo, M -- CA 42567/CA/NCI NIH HHS/ -- GM 38212/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1988 Sep 9;241(4871):1335-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Biochemistry and Molecular Biology, Rockefeller University, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3413495" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviruses, Human/genetics ; Base Sequence ; DNA-Binding Proteins/physiology ; Deoxyribonucleases/metabolism ; Macromolecular Substances ; Molecular Sequence Data ; Nuclear Proteins/physiology ; *Promoter Regions, Genetic ; RNA Polymerase II/*metabolism ; *Regulatory Sequences, Nucleic Acid ; Transcription Factors/*physiology ; *Transcription, Genetic
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  • 12
    Publication Date: 1988-09-23
    Description: Antibodies directed against a conserved intracellular segment of the sodium channel alpha subunit slow the inactivation of sodium channels in rat muscle cells. Of four site-directed antibodies tested, only antibodies against the short intracellular segment between homologous transmembrane domains III and IV slowed inactivation, and their effects were blocked by the corresponding peptide antigen. No effects on the voltage dependence of sodium channel activation or of steady-state inactivation were observed, but the rate of onset of the antibody effect and the extent of slowing of inactivation were voltage-dependent. Antibody binding was more rapid at negative potentials, at which sodium channels are not inactivated; antibody-induced slowing of inactivation was greater during depolarizations to more positive membrane potentials. The peptide segment recognized by this antibody appears to participate directly in rapid sodium channel inactivation during large depolarizations and to undergo a conformational change that reduces its accessibility to antibodies as the channel inactivates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vassilev, P M -- Scheuer, T -- Catterall, W A -- NS 15751/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1988 Sep 23;241(4873):1658-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, University of Washington, School of Medicine, Seattle 98195.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2458625" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies ; Cytoplasm/analysis ; In Vitro Techniques ; Ion Channels/*metabolism ; Membrane Potentials ; Molecular Sequence Data ; Peptides/*metabolism ; Rats ; Sodium/*metabolism
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  • 13
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1988-03-25
    Description: The production of therapeutic human monoclonal antibodies by hybridoma technology has proved difficult, and this has prompted the "humanizing" of mouse monoclonal antibodies by recombinant DNA techniques. It was shown previously that the binding site for a small hapten could be grafted from the heavy-chain variable domain of a mouse antibody to that of a human myeloma protein by transplanting the hypervariable loops. It is now shown that a large binding site for a protein antigen (lysozyme) can also be transplanted from mouse to human heavy chain. The success of such constructions may be facilitated by an induced-fit mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Verhoeyen, M -- Milstein, C -- Winter, G -- New York, N.Y. -- Science. 1988 Mar 25;239(4847):1534-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Laboratory of Molecular Biology, Cambridge, England.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2451287" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibodies, Monoclonal/genetics/immunology ; Base Sequence ; Binding Sites, Antibody ; Binding, Competitive ; Cloning, Molecular ; DNA, Recombinant ; Epitopes/immunology ; Humans ; Immunoglobulin G/genetics/immunology ; Immunoglobulin Variable Region/genetics ; Mice ; Molecular Sequence Data ; Muramidase/*immunology ; Plasmids ; Recombinant Proteins ; Transfection
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  • 14
    Publication Date: 1988-12-23
    Description: 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〉
    Keywords: 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
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  • 15
    Publication Date: 1988-04-15
    Description: 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〉
    Keywords: 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
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  • 16
    Publication Date: 1988-04-29
    Description: Zeins, the storage proteins of maize, are totally lacking in the essential amino acids lysine and tryptophan. Lysine codons and lysine- and tryptophan-encoding oligonucleotides were introduced at several positions into a 19-kilodalton zein complementary DNA by oligonucleotide-mediated mutagenesis. A 450-base pair open reading frame from a simian virus 40 (SV40) coat protein was also engineered into the zein coding region. Messenger RNAs for the modified zeins were synthesized in vitro with an SP6 RNA polymerase system and injected into Xenopus laevis oocytes. The modifications did not affect the translation, signal peptide cleavage, or stability of the zeins. The ability of the modified zeins to assemble into structures similar to maize protein bodies was assayed by two criteria: assembly into membrane-bound vesicles resistant to exogenously added protease, and ability to self-aggregate into dense structures. All of the modified zeins were membrane-bound; only the one containing a 17-kilodalton SV40 protein fragment was unable to aggregate. These findings suggest that it may be possible to create high-lysine corn by genetic engineering.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wallace, J C -- Galili, G -- Kawata, E E -- Cuellar, R E -- Shotwell, M A -- Larkins, B A -- New York, N.Y. -- Science. 1988 Apr 29;240(4852):662-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2834822" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell Membrane/metabolism ; DNA/genetics ; DNA, Recombinant ; Female ; Genetic Engineering ; *Lysine/genetics ; Macromolecular Substances ; Molecular Sequence Data ; Mutation ; Oocytes/*metabolism ; Peptide Hydrolases/metabolism ; RNA, Messenger/genetics ; Simian virus 40/genetics ; Xenopus laevis ; Zea mays ; Zein/genetics/*metabolism
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  • 17
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1988-08-05
    Description: Although the proteinase inhibitor alpha-2-antiplasmin (alpha 2AP) is known to control the activity of plasmin through rapid formation of stable complexes, it also efficiently inactivates chymotrypsin. These interactions are shown to occur at adjacent, overlapping sites so that plasmin attacks the inhibitor at an Arg364-Met365 peptide bond, while chymotrypsin interacts at a Met365-Ser366 sequence one residue downstream. Thus, a naturally occurring plasma serine proteinase inhibitor can have multiple specificities through interactions at adjacent sites. It also illustrates the potential flexibility of the reactive site loop in this class of inhibitors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Potempa, J -- Shieh, B H -- Travis, J -- New York, N.Y. -- Science. 1988 Aug 5;241(4866):699-700.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Molecular Biology, Jagiellonian University, Cracow, Poland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2456616" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Carboxypeptidase B ; Carboxypeptidases/metabolism ; Carboxypeptidases A ; Chromatography, Gel ; Chromatography, High Pressure Liquid ; Chymotrypsin/antagonists & inhibitors/metabolism ; Electrophoresis, Polyacrylamide Gel ; Humans ; Molecular Sequence Data ; Peptide Fragments/metabolism ; Protease Inhibitors ; alpha-2-Antiplasmin/*metabolism
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  • 18
    Publication Date: 1988-07-22
    Description: 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〉
    Keywords: 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
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  • 19
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1988-11-25
    Description: 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〉
    Keywords: 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
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  • 20
    Publication Date: 1988-11-11
    Description: The glycoprotein hormones lutropin (LH) and follitropin (FSH), which have common alpha-subunits but hormone-specific beta-subunits, are both synthesized in the gonadotroph. However, they bear Asn-linked oligosaccharides that differ in structure. Those on LH terminate with the sequence SO4-4GalNAc beta 1----4GlcNAc beta 1----2Man alpha, whereas those on FSH terminate with the sequence sialic acid alpha-Gal beta 1----4GlcNAc beta 1----2Man alpha. A GalNAc-transferase was identified in bovine pituitary membranes that recognizes features of the alpha-subunit peptide and adds GalNAc to its oligosaccharides with an apparent Michaelis constant of 25 micromolar. The different patterns of glycosylation for LH and FSH indicate that access to the protein recognition marker on the alpha-subunit is modulated by the associated beta-subunit. The tightly regulated synthesis of sulfated and sialylated oligosaccharides on the pituitary glycoprotein hormones suggests these oligosaccharides have an important biological role.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, P L -- Baenziger, J U -- HD-20197/HD/NICHD NIH HHS/ -- R37-CA21923/CA/NCI NIH HHS/ -- T32-ES07066/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1988 Nov 11;242(4880):930-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Washington University School of Medicine, St. Louis, MO 63110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2460923" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylgalactosamine/metabolism ; Animals ; Carbohydrate Sequence ; Cattle ; Cell Membrane/enzymology ; Follicle Stimulating Hormone/*biosynthesis/metabolism ; Follicle Stimulating Hormone, beta Subunit ; Galactosyltransferases/*metabolism ; Glycoprotein Hormones, alpha Subunit/metabolism ; Glycosylation ; Humans ; Luteinizing Hormone/*biosynthesis/metabolism ; Molecular Sequence Data ; *N-Acetylgalactosaminyltransferases ; Oligosaccharides/metabolism ; Pituitary Gland/*enzymology ; Placenta/enzymology ; Sulfates/metabolism
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