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  • Articles  (105)
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  • Signal Transduction  (105)
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  • Articles  (105)
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  • 1
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2016-09-03
    Description: Author: L. Bryan Ray
    Keywords: Signal Transduction
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 1991-12-06
    Description: The protein kinase C (PKC) family of serine-threonine kinases has been implicated in the regulation of a variety of signaling cascades. One member of this family, eye-PKC, is expressed exclusively in the Drosophila visual system. The inaC (inactivation-no-afterpotential C) locus was shown to be the structural gene for eye-PKC. Analysis of the light response from inaC mutants showed that this kinase is required for the deactivation and rapid desensitization of the visual cascade. Light adaptation was also defective in inaC mutant flies. In flies carrying the retinal degeneration mutation rdgB, absence of eye-PKC suppressed photoreceptor cell degeneration. These results indicate that eye-PKC functions in the light-dependent regulation of the phototransduction cascade in Drosophila.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, D P -- Ranganathan, R -- Hardy, R W -- Marx, J -- Tsuchida, T -- Zuker, C S -- New York, N.Y. -- Science. 1991 Dec 6;254(5037):1478-84.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of California, San Diego, La Jolla.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1962207" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological/physiology ; Amino Acid Sequence ; Animals ; Calcium/physiology ; DNA Mutational Analysis ; Drosophila melanogaster/*genetics ; Eye/enzymology ; Genes ; Molecular Sequence Data ; Photoreceptor Cells/*physiology ; Protein Kinase C/chemistry/*physiology ; Restriction Mapping ; Retinal Degeneration/pathology/*physiopathology ; Signal Transduction ; *Vision, Ocular
    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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  • 3
    Publication Date: 1991-04-05
    Description: The natriuretic peptides are hormones that can stimulate natriuretic, diuretic, and vasorelaxant activity in vivo, presumably through the activation of two known cell surface receptor guanylyl cyclases (ANPR-A and ANPR-B). Although atrial natriuretic peptide (ANP) and, to a lesser extent, brain natriuretic peptide (BNP) are efficient activators of the ANPR-A guanylyl cyclase, neither hormone can significantly stimulate ANPR-B. A member of this hormone family, C-type natriuretic peptide (CNP), potently and selectively activated the human ANPR-B guanylyl cyclase. CNP does not increase guanosine 3',5'-monophosphate accumulation in cells expressing human ANPR-A. The affinity of CNP for ANPR-B is 50- or 500-fold higher than ANP or BNP, respectively. This ligand-receptor pair may be involved in the regulation of fluid homeostasis by the central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koller, K J -- Lowe, D G -- Bennett, G L -- Minamino, N -- Kangawa, K -- Matsuo, H -- Goeddel, D V -- New York, N.Y. -- Science. 1991 Apr 5;252(5002):120-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Genentech, Inc., South San Francisco 94080.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1672777" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atrial Natriuretic Factor/*physiology ; Cells, Cultured ; Cercopithecus aethiops ; Cloning, Molecular ; Dose-Response Relationship, Drug ; Guanylate Cyclase/metabolism ; Humans ; Natriuretic Peptide, Brain ; Natriuretic Peptide, C-Type ; Nerve Tissue Proteins/*pharmacology ; Receptors, Atrial Natriuretic Factor ; Receptors, Cell Surface/*physiology ; Recombinant Proteins ; Signal Transduction
    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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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1991-03-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoffman, M -- New York, N.Y. -- Science. 1991 Mar 8;251(4998):1181.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2006408" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Contractile Proteins/physiology ; Cytoskeleton/*physiology/ultrastructure ; Epidermal Growth Factor/*physiology ; Inositol 1,4,5-Trisphosphate/physiology ; Microfilament Proteins/*physiology ; Models, Biological ; Profilins ; Receptor, Epidermal Growth Factor/physiology ; Signal Transduction ; Type C Phospholipases/metabolism
    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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  • 5
    Publication Date: 1991-03-08
    Description: Epidermal growth factor and platelet-derived growth factor can stimulate the production of the second messenger inositol trisphosphate in responsive cells, but the biochemical pathway for these signaling events has been uncertain because the reactions have not been reconstituted with purified molecules in vitro. A reconstitution is described that requires not only the growth factor, its receptor with tyrosine kinase activity, and the soluble phospholipase C-gamma 1, but also the small soluble actin-binding protein profilin. Profilin binds to the substrate phosphatidylinositol 4,5-bisphosphate and inhibits its hydrolysis by unphosphorylated phospholipase C-gamma 1. Phosphorylation of phospholipase C-gamma 1 by the epidermal growth factor receptor tyrosine kinase overcomes the inhibitory effect of profilin and results in an effective activation of phospholipase C-gamma 1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldschmidt-Clermont, P J -- Kim, J W -- Machesky, L M -- Rhee, S G -- Pollard, T D -- GM-26338/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Mar 8;251(4998):1231-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology and Anatomy, Johns Hopkins University School of Medicine, Baltimore, MD 21205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1848725" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Contractile Proteins/metabolism ; Epidermal Growth Factor/*metabolism ; Inositol Phosphates/metabolism ; Isoenzymes/*metabolism ; Kinetics ; Microfilament Proteins/*metabolism ; Phosphatidylinositol 4,5-Diphosphate ; Phosphatidylinositols/metabolism ; Phosphorylation ; Profilins ; Protein-Tyrosine Kinases/*metabolism ; Receptor, Epidermal Growth Factor/*metabolism ; Signal Transduction ; Type C Phospholipases/*metabolism ; Tyrosine
    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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  • 6
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1991-09-13
    Description: Interleukin-8 (IL-8) is an inflammatory cytokine that activates neutrophil chemotaxis, degranulation, and the respiratory burst. Neutrophils express receptors for IL-8 that are coupled to guanine nucleotide-binding proteins (G proteins); binding of IL-8 to its receptor induces the mobilization of intracellular calcium stores. A cDNA clone from HL-60 neutrophils, designated p2, has now been isolated that encodes a human IL-8 receptor. When p2 is expressed in oocytes from Xenopus laevis, the oocytes bind 125I-labeled IL-8 specifically and respond to IL-8 by mobilizing calcium stores with an EC50 of 20 nM. This IL-8 receptor has 77% amino acid identity with a second human neutrophil receptor isotype that binds IL-8 with higher affinity. It also exhibits 69% amino acid identity with a protein reported to be an N-formyl peptide receptor from rabbit neutrophils, but less than 30% identity with all other known G protein-coupled receptors, including the human N-formyl peptide receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Murphy, P M -- Tiffany, H L -- New York, N.Y. -- Science. 1991 Sep 13;253(5025):1280-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1891716" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding, Competitive ; Cloning, Molecular/methods ; DNA/genetics ; Gene Library ; Humans ; Interleukin-8/*metabolism/pharmacology ; Kinetics ; Molecular Sequence Data ; Neutrophils/immunology ; Oocytes/drug effects/physiology ; Protein Biosynthesis ; Rabbits ; Receptors, Immunologic/drug effects/*genetics/physiology ; Receptors, Interleukin-8A ; Recombinant Proteins/metabolism ; Sequence Homology, Nucleic Acid ; Signal Transduction ; Transcription, Genetic ; Xenopus
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  • 7
    Publication Date: 1991-03-01
    Description: Calcitonin is a calcium regulating peptide hormone with binding sites in kidney and bone as well as in the central nervous system. The mechanisms of signal transduction by calcitonin receptors were studied in a pig kidney cell line where the hormone was found to regulate sodium pumps. Calcitonin receptors activated the cyclic adenosine monophosphate (cAMP) or the protein kinase C (PKC) pathways. The two transduction pathways required guanosine triphosphate (GTP)-binding proteins (G proteins) (the choleratoxin sensitive Gs and the pertussis toxin sensitive Gi, respectively) and led to opposite biological responses. Moreover, selective activation of one or the other pathway was cell cycle-dependent. Therefore, calcitonin may induce different biological responses in target cells depending on their positions in the cell cycle. Such a modulation of ligand-induced responses could be of importance in rapidly growing cell populations such as during embryogenesis, growth, and tumor formation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chakraborty, M -- Chatterjee, D -- Kellokumpu, S -- Rasmussen, H -- Baron, R -- DE-04724/DE/NIDCR NIH HHS/ -- DK-19813/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1991 Mar 1;251(4997):1078-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Yale University School of Medicine, Department of Cell Biology, New Haven, CT 06510.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1847755" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclases/physiology ; Animals ; Calcitonin/*physiology ; *Cell Cycle ; Cell Line ; GTP-Binding Proteins/*physiology ; Kidney ; Ouabain/metabolism ; Receptors, Calcitonin ; Receptors, Cell Surface/*physiology ; Signal Transduction ; Sodium-Potassium-Exchanging ATPase/*metabolism ; Swine
    Print ISSN: 0036-8075
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  • 8
    Publication Date: 1991-11-15
    Description: Binding of ligand or antibody to certain cell-surface proteins that are anchored to the membrane by glycophosphatidylinositol (GPI) can cause activation of leukocytes. However, it is not known how these molecules, which lack intracellular domains, can transduce signals. The GPI-linked human molecules CD59, CD55, CD48, CD24, and CD14 as well as the mouse molecules Thy-1 and Ly-6 were found to associate with protein tyrosine kinases, key regulators of cell activation and signal transduction. A protein tyrosine kinase associated with the GPI-linked proteins CD59, CD55, and CD48 in human T cells, and with Thy-1 in mouse T cells was identified as p56lck, a protein tyrosine kinase related to Src. This interaction of GPI-linked molecules with protein tyrosine kinases suggests a potential mechanism of signal transduction in cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stefanova, I -- Horejsi, V -- Ansotegui, I J -- Knapp, W -- Stockinger, H -- New York, N.Y. -- Science. 1991 Nov 15;254(5034):1016-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Immunology-Vienna International Research Cooperation Center, University of Vienna, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1719635" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/*physiology ; Antigens, Differentiation/physiology ; Cell Adhesion Molecules/physiology ; Glycolipids/physiology ; Glycosylphosphatidylinositols ; Humans ; Membrane Glycoproteins/physiology ; Membrane Proteins/*physiology ; Mice ; Phosphatidylinositols/physiology ; Phosphorylation ; Phosphotyrosine ; Protein-Tyrosine Kinases/*physiology ; Receptor Aggregation ; Receptors, Cell Surface/*physiology ; Signal Transduction ; Tyrosine/analogs & derivatives/metabolism
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  • 9
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1991-10-04
    Description: The CD19-CR2 complex of B lymphocytes contains proteins that participate in two host-defense systems, the immune and complement systems. The ligand for the subunit of the immune system, CD19, is not known, but the complement receptor subunit, CR2 (CD21), binds activation fragments of the C3 component of the complement system and may mediate immunopotentiating effects of complement. A recombinant, soluble CR2 was prepared by fusing the C3-binding region of the receptor to immunoglobulin G1 (IgG1). The (CR2)2-IgG1 chimera competed with cellular CR2 for C3 binding and suppressed the antibody response to a T cell-dependent antigen when administered to mice at the time of immunization. This inhibitory effect of (CR2)2-IgG1 demonstrates the B cell-activating function of the CD19-CR2 complex and suggests a new method for humoral immunosuppression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hebell, T -- Ahearn, J M -- Fearon, D T -- AI-22833/AI/NIAID NIH HHS/ -- AI-28191/AI/NIAID NIH HHS/ -- GM-43803/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Oct 4;254(5028):102-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1718035" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Antibody Formation ; Antigens, CD/*physiology ; Antigens, CD19 ; Antigens, Differentiation, B-Lymphocyte/chemistry/*physiology ; B-Lymphocytes/*physiology ; Base Sequence ; Binding, Competitive ; Cloning, Molecular ; Immunosuppression ; In Vitro Techniques ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C3H ; Molecular Sequence Data ; Receptors, Complement/chemistry/*physiology ; Receptors, Complement 3d ; Recombinant Fusion Proteins ; Signal Transduction ; Solubility
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1991-08-23
    Description: FK506 and rapamycin are related immunosuppressive compounds that block helper T cell activation by interfering with signal transduction. In vitro, both drugs bind and inhibit the FK506-binding protein (FKBP) proline rotamase. Saccharomyces cerevisiae cells treated with rapamycin irreversibly arrested in the G1 phase of the cell cycle. An FKBP-rapamycin complex is concluded to be the toxic agent because (i) strains that lack FKBP proline rotamase, encoded by FPR1, were viable and fully resistant to rapamycin and (ii) FK506 antagonized rapamycin toxicity in vivo. Mutations that conferred rapamycin resistance altered conserved residues in FKBP that are critical for drug binding. Two genes other than FPR1, named TOR1 and TOR2, that participate in rapamycin toxicity were identified. Nonallelic noncomplementation between FPR1, TOR1, and TOR2 alleles suggests that the products of these genes may interact as subunits of a protein complex. Such a complex may mediate nuclear entry of signals required for progression through the cell cycle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heitman, J -- Movva, N R -- Hall, M N -- New York, N.Y. -- Science. 1991 Aug 23;253(5022):905-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Basel, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1715094" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Anti-Bacterial Agents/metabolism/pharmacology ; Base Sequence ; Binding Sites ; Carrier Proteins/antagonists & inhibitors/chemistry/genetics/metabolism ; Cell Cycle/*drug effects ; Cyclosporins/pharmacology ; Drug Resistance, Microbial/genetics ; G1 Phase/drug effects ; Humans ; Immunosuppressive Agents/pharmacology ; Molecular Sequence Data ; Molecular Structure ; Mutation ; Polyenes/metabolism/*pharmacology ; Saccharomyces cerevisiae/*cytology/drug effects ; Sequence Homology, Nucleic Acid ; Signal Transduction ; Sirolimus ; Tacrolimus ; Tacrolimus Binding Proteins
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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