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  • 1
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    Photic induction of mPer1 and mPer2 in cry-deficient mice lacking a biological clock (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2000-01-05
    Beschreibung: Mice lacking mCry1 and mCry2 are behaviorally arrhythmic. As shown here, cyclic expression of the clock genes mPer1 and mPer2 (mammalian Period genes 1 and 2) in the suprachiasmatic nucleus and peripheral tissues is abolished and mPer1 and mPer2 mRNA levels are constitutively high. These findings indicate that the biological clock is eliminated in the absence of both mCRY1 and mCRY2 (mammalian cryptochromes 1 and 2) and support the idea that mammalian CRY proteins act in the negative limb of the circadian feedback loop. The mCry double-mutant mice retain the ability to have mPer1 and mPer2 expression induced by a brief light stimulus known to phase-shift the biological clock in wild-type animals. Thus, mCRY1 and mCRY2 are dispensable for light-induced phase shifting of the biological clock.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Okamura, H -- Miyake, S -- Sumi, Y -- Yamaguchi, S -- Yasui, A -- Muijtjens, M -- Hoeijmakers, J H -- van der Horst, G T -- New York, N.Y. -- Science. 1999 Dec 24;286(5449):2531-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy and Brain Science, Kobe University School of Medicine, Kobe 650-0017, Japan. okamurah@kobe-u.ac.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10617474" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Biological Clocks/*physiology ; Cell Cycle Proteins ; Circadian Rhythm/*physiology ; Cryptochromes ; *Drosophila Proteins ; *Eye Proteins ; Feedback ; Flavoproteins/genetics/*physiology ; Gene Expression Regulation ; In Situ Hybridization ; *Light ; Liver/metabolism ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mutation ; Nuclear Proteins/*genetics ; Period Circadian Proteins ; *Photoreceptor Cells, Invertebrate ; Polymerase Chain Reaction ; RNA, Messenger/genetics/metabolism ; Receptors, G-Protein-Coupled ; Retina/metabolism ; Suprachiasmatic Nucleus/metabolism ; Transcription Factors
    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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  • 2
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    A mutation in the C. elegans EXP-2 potassium channel that alters feeding behavior (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2000-01-05
    Beschreibung: The nematode pharynx has a potassium channel with unusual properties, which allows the muscles to repolarize quickly and with the proper delay. Here, the Caenorhabditis elegans exp-2 gene is shown to encode this channel. EXP-2 is a Kv-type (voltage-activated) potassium channel that has inward-rectifying properties resembling those of the structurally dissimilar human ether-a-go-go-related gene (HERG) channel. Null and gain-of-function mutations affect pharyngeal muscle excitability in ways that are consistent with the electrophysiological behavior of the channel, and thereby demonstrate a direct link between the kinetics of this unusual channel and behavior.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3791429/" 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/PMC3791429/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, M W -- Fleischhauer, R -- Dent, J A -- Joho, R H -- Avery, L -- HL46154/HL/NHLBI NIH HHS/ -- NS28407/NS/NINDS NIH HHS/ -- R01 HL046154/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1999 Dec 24;286(5449):2501-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390-9148, USA. wdavis@biology.utah.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10617464" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Action Potentials ; Animals ; Caenorhabditis elegans/genetics/*physiology ; Feeding Behavior ; Genes, Helminth ; Genes, Reporter ; Ion Channel Gating ; Kinetics ; Membrane Potentials ; Models, Molecular ; Muscles/metabolism ; Mutation ; Neurons/metabolism ; Oocytes/metabolism ; Pharyngeal Muscles/physiology ; Potassium Channels/chemistry/genetics/*physiology ; Protein Conformation ; RNA, Complementary/genetics ; Recombinant Fusion Proteins/biosynthesis ; 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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  • 3
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    Bacteriophytochromes: phytochrome-like photoreceptors from nonphotosynthetic eubacteria (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2000-01-05
    Beschreibung: Phytochromes are a family of photoreceptors used by green plants to entrain their development to the light environment. The distribution of these chromoproteins has been expanded beyond photoautotrophs with the discovery of phytochrome-like proteins in the nonphotosynthetic eubacteria Deinococcus radiodurans and Pseudomonas aeruginosa. Like plant phytochromes, the D. radiodurans receptor covalently binds linear tetrapyrroles autocatalytically to generate a photochromic holoprotein. However, the attachment site is distinct, using a histidine to potentially form a Schiff base linkage. Sequence homology and mutational analysis suggest that D. radiodurans bacteriophytochrome functions as a light-regulated histidine kinase, which helps protect the bacterium from visible light.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, S J -- Vener, A V -- Vierstra, R D -- New York, N.Y. -- Science. 1999 Dec 24;286(5449):2517-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Genetics, Cellular and Molecular Biology Program and Department of Horticulture, University of Wisconsin-Madison, 1575 Linden Drive, Madison, WI 53706, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10617469" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Amino Acid Substitution ; Bacterial Proteins/chemistry/genetics/*metabolism ; Biliverdine/analogs & derivatives/metabolism ; Binding Sites ; Gram-Positive Cocci/genetics/*metabolism ; Histidine/metabolism ; Light ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Photoreceptors, Microbial/chemistry/genetics/*metabolism ; Phytochrome/metabolism ; Protein Kinases/chemistry/genetics/*metabolism ; Pseudomonas aeruginosa/*metabolism ; Signal Transduction
    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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  • 4
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    Circadian rhythms. Possible clock messenger identified (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2000-01-15
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1999 Dec 24;286(5449):2434-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10636797" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Biological Clocks/*physiology ; Brain/metabolism ; CLOCK Proteins ; Circadian Rhythm/*physiology ; Darkness ; Drosophila/genetics/physiology ; *Drosophila Proteins ; Gene Expression Regulation ; Genes, Insect ; Light ; Mutation ; Neurons/metabolism ; Neuropeptides/genetics/*physiology ; Transcription Factors/genetics/physiology
    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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  • 5
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    Leakage-resistant blood vessels in mice transgenically overexpressing angiopoietin-1 (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2000-01-05
    Beschreibung: Angiopoietin-1 (Ang1) and vascular endothelial growth factor (VEGF) are endothelial cell-specific growth factors. Direct comparison of transgenic mice overexpressing these factors in the skin revealed that the VEGF-induced blood vessels were leaky, whereas those induced by Ang1 were nonleaky. Moreover, vessels in Ang1-overexpressing mice were resistant to leaks caused by inflammatory agents. Coexpression of Ang1 and VEGF had an additive effect on angiogenesis but resulted in leakage-resistant vessels typical of Ang1. Ang1 therefore may be useful for reducing microvascular leakage in diseases in which the leakage results from chronic inflammation or elevated VEGF and, in combination with VEGF, for promoting growth of nonleaky vessels.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thurston, G -- Suri, C -- Smith, K -- McClain, J -- Sato, T N -- Yancopoulos, G D -- McDonald, D M -- HL-24136/HL/NHLBI NIH HHS/ -- HL-59157/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1999 Dec 24;286(5449):2511-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy and Cardiovascular Research Institute, University of California, San Francisco, CA 94143-0452, USA. gavint@itsa.ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10617467" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Angiopoietin-1 ; Animals ; Arterioles/anatomy & histology/physiology ; Binding Sites ; Capillaries/anatomy & histology/physiology ; *Capillary Permeability ; Ear ; Endothelial Growth Factors/genetics/*physiology ; Endothelium, Vascular/metabolism ; Inflammation/chemically induced ; Inflammation Mediators/pharmacology ; Lymphokines/genetics/*physiology ; Membrane Glycoproteins/genetics/*physiology ; Mice ; Mice, Transgenic ; Microcirculation/anatomy & histology/*physiology ; Mustard Plant ; *Neovascularization, Physiologic ; Plant Extracts/pharmacology ; Plant Lectins ; Plant Oils ; Plants, Medicinal ; Platelet Activating Factor/pharmacology ; Ricin/metabolism ; Serotonin/pharmacology ; Skin/blood supply/metabolism ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factors ; Venules/anatomy & histology/physiology
    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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  • 6
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    Molecular linkage underlying microtubule orientation toward cortical sites in yeast (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2000-03-24
    Beschreibung: Selective microtubule orientation toward spatially defined cortical sites is critical to polarized cellular processes as diverse as axon outgrowth and T cell cytotoxicity. In yeast, oriented cytoplasmic microtubules align the mitotic spindle between mother and bud. The cortical marker protein Kar9 localizes to the bud tip and is required for the orientation of microtubules toward this region. Here, we show that Kar9 directs microtubule orientation by acting through Bim1, a conserved microtubule-binding protein. Bim1 homolog EB1 was originally identified through its interaction with adenomatous polyposis coli (APC) tumor suppressor, raising the possibility that an APC-EB1 linkage orients microtubules in higher cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Korinek, W S -- Copeland, M J -- Chaudhuri, A -- Chant, J -- GM07620-19/GM/NIGMS NIH HHS/ -- GM07620-20/GM/NIGMS NIH HHS/ -- GM49782/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 2000 Mar 24;287(5461):2257-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10731146" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenomatous Polyposis Coli Protein ; Cell Cycle Proteins/genetics/*metabolism ; Cell Nucleus/physiology ; Cytoskeletal Proteins/metabolism ; Microtubule Proteins/genetics/*metabolism ; Microtubule-Associated Proteins/metabolism ; Microtubules/metabolism/*physiology ; Mutation ; Nuclear Proteins/genetics/*metabolism ; Phenotype ; Protein Binding ; Recombinant Fusion Proteins/metabolism ; Saccharomyces cerevisiae/cytology/genetics/*physiology ; *Saccharomyces cerevisiae Proteins ; Spindle Apparatus/*physiology ; Two-Hybrid System Techniques
    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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  • 7
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    Role of the mouse ank gene in control of tissue calcification and arthritis (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2000-07-15
    Beschreibung: Mutation at the mouse progressive ankylosis (ank) locus causes a generalized, progressive form of arthritis accompanied by mineral deposition, formation of bony outgrowths, and joint destruction. Here, we show that the ank locus encodes a multipass transmembrane protein (ANK) that is expressed in joints and other tissues and controls pyrophosphate levels in cultured cells. A highly conserved gene is present in humans and other vertebrates. These results identify ANK-mediated control of pyrophosphate levels as a possible mechanism regulating tissue calcification and susceptibility to arthritis in higher animals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ho, A M -- Johnson, M D -- Kingsley, D M -- 5T32GM07365/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Jul 14;289(5477):265-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology and Howard Hughes Medical Institute, Beckman Center B300, Stanford University School of Medicine, Stanford, CA 94305-5327, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10894769" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Arthritis/*genetics/metabolism/pathology ; Base Sequence ; Biological Transport ; COS Cells ; Calcinosis/*genetics ; Chromosome Mapping ; Cloning, Molecular ; Dna ; Diphosphates/*metabolism ; Durapatite/metabolism ; Gene Expression ; Genetic Complementation Test ; Humans ; Membrane Proteins/*genetics/metabolism/*physiology ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; Mutation ; Phenotype ; Phosphate Transport Proteins ; Physical Chromosome Mapping ; Sequence Homology, Nucleic Acid ; Tissue Distribution
    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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  • 8
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    A structural model of transcription elongation (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2000-08-01
    Beschreibung: The path of the nucleic acids through a transcription elongation complex was tracked by mapping cross-links between bacterial RNA polymerase (RNAP) and transcript RNA or template DNA onto the x-ray crystal structure. In the resulting model, the downstream duplex DNA is nestled in a trough formed by the beta' subunit and enclosed on top by the beta subunit. In the RNAP channel, the RNA/DNA hybrid extends from the enzyme active site, along a region of the beta subunit harboring rifampicin resistance mutations, to the beta' subunit "rudder." The single-stranded RNA is then extruded through another channel formed by the beta-subunit flap domain. The model provides insight into the functional properties of the transcription complex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Korzheva, N -- Mustaev, A -- Kozlov, M -- Malhotra, A -- Nikiforov, V -- Goldfarb, A -- Darst, S A -- GM30717/GM/NIGMS NIH HHS/ -- GM49242/GM/NIGMS NIH HHS/ -- GM53759/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Jul 28;289(5479):619-25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Public Health Research Institute, 455 First Avenue, New York, NY 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10915625" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Binding Sites ; Cross-Linking Reagents ; Crystallography, X-Ray ; DNA/chemistry/genetics/*metabolism ; DNA Primers ; DNA-Directed RNA Polymerases/*chemistry/genetics/metabolism ; Models, Molecular ; Mutation ; Nucleic Acid Conformation ; Nucleic Acid Hybridization ; Oligodeoxyribonucleotides/chemistry/metabolism ; Oligoribonucleotides/chemistry/metabolism ; Protein Conformation ; Protein Structure, Tertiary ; RNA, Messenger/chemistry/genetics/*metabolism ; Templates, Genetic ; Thermus/enzymology ; *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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  • 9
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    The Drosophila genome sequence: implications for biology and medicine (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2000-03-24
    Beschreibung: The 120-megabase euchromatic portion of the Drosophila melanogaster genome has been sequenced. Because the genome is compact and many genetic tools are available, and because fly cell biology and development have much in common with mammals, this sequence may be the Rosetta stone for deciphering the human genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kornberg, T B -- Krasnow, M A -- New York, N.Y. -- Science. 2000 Mar 24;287(5461):2218-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Biophysics, University of California at San Francisco, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10731136" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Biology ; Cloning, Molecular ; DNA Transposable Elements ; Drosophila melanogaster/*genetics/physiology ; Genes, Insect ; *Genetics, Medical ; *Genome ; *Genome, Human ; Humans ; Mutation ; Physical Chromosome Mapping ; *Sequence Analysis, DNA
    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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  • 10
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    Selective inhibition of NF-kappaB activation by a peptide that blocks the interaction of NEMO with the IkappaB kinase complex (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2000-09-01
    Beschreibung: Activation of the transcription factor nuclear factor (NF)-kappaB by proinflammatory stimuli leads to increased expression of genes involved in inflammation. Activation of NF-kappaB requires the activity of an inhibitor of kappaB (IkappaB)-kinase (IKK) complex containing two kinases (IKKalpha and IKKbeta) and the regulatory protein NEMO (NF-kappaB essential modifier). An amino-terminal alpha-helical region of NEMO associated with a carboxyl-terminal segment of IKKalpha and IKKbeta that we term the NEMO-binding domain (NBD). A cell-permeable NBD peptide blocked association of NEMO with the IKK complex and inhibited cytokine-induced NF-kappaB activation and NF-kappaB-dependent gene expression. The peptide also ameliorated inflammatory responses in two experimental mouse models of acute inflammation. The NBD provides a target for the development of drugs that would block proinflammatory activation of the IKK complex without inhibiting basal NF-kappaB activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉May, M J -- D'Acquisto, F -- Madge, L A -- Glockner, J -- Pober, J S -- Ghosh, S -- AI 33443/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2000 Sep 1;289(5484):1550-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Immunobiology and Department of Molecular Biophysics and Biochemistry, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10968790" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Anti-Inflammatory Agents, Non-Steroidal/chemistry/pharmacology ; COS Cells ; Cells, Cultured ; E-Selectin/biosynthesis/genetics ; Endothelium, Vascular/metabolism ; Gene Expression Regulation ; HeLa Cells ; Humans ; I-kappa B Kinase ; Inflammation/drug therapy ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Mutation ; NF-kappa B/*metabolism ; Peptides/chemistry/*pharmacology ; Point Mutation ; Protein Structure, Tertiary ; Protein-Serine-Threonine Kinases/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism
    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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