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  • *Signal Transduction  (5)
  • American Association for the Advancement of Science (AAAS)  (5)
  • Molecular Diversity Preservation International
  • Wiley
  • Oxford University Press
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (5)
  • Molecular Diversity Preservation International
  • Wiley
  • Oxford University Press
Years
  • 1
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    Range of messenger action of calcium ion and inositol 1,4,5-trisphosphate (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-12-11
    Description: The range of messenger action of a point source of Ca2+ or inositol 1,4,5-trisphosphate (IP3) was determined from measurements of their diffusion coefficients in a cytosolic extract from Xenopus laevis oocytes. The diffusion coefficient (D) of [3H]IP3 injected into an extract was 283 microns 2/s. D for Ca2+ increased from 13 to 65 microns 2/s when the free calcium concentration was raised from about 90 nM to 1 microM. The slow diffusion of Ca2+ in the physiologic concentration range results from its binding to slowly mobile or immobile buffers. The calculated effective ranges of free Ca2+ before it is buffered, buffered Ca2+, and IP3 determined from their diffusion coefficients and lifetimes were 0.1 micron, 5 microns, and 24 microns, respectively. Thus, for a transient point source of messenger in cells smaller than 20 microns, IP3 is a global messenger, whereas Ca2+ acts in restricted domains.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Allbritton, N L -- Meyer, T -- Stryer, L -- 5F32AI0814203/AI/NIAID NIH HHS/ -- MH45324/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1992 Dec 11;258(5089):1812-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Stanford University, CA 94305.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1465619" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/*metabolism ; Calcium-Transporting ATPases/antagonists & inhibitors ; Carbonyl Cyanide p-Trifluoromethoxyphenylhydrazone/pharmacology ; Chromatography, High Pressure Liquid ; Cytosol/metabolism ; Diffusion ; Inositol 1,4,5-Trisphosphate/*metabolism ; Kinetics ; Oocytes/drug effects/*metabolism ; *Second Messenger Systems ; *Signal Transduction ; Terpenes/pharmacology ; Thapsigargin ; Time Factors ; Xenopus laevis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Feedback loops shape cellular signals in space and time (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-10-18
    Description: Positive and negative feedback loops are common regulatory elements in biological signaling systems. We discuss core feedback motifs that have distinct roles in shaping signaling responses in space and time. We also discuss approaches to experimentally investigate feedback loops in signaling systems.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2680159/" 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/PMC2680159/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brandman, Onn -- Meyer, Tobias -- R01 GM030179/GM/NIGMS NIH HHS/ -- R01 GM030179-25/GM/NIGMS NIH HHS/ -- R01 GM063702/GM/NIGMS NIH HHS/ -- R01 GM063702-06/GM/NIGMS NIH HHS/ -- R01GM030179/GM/NIGMS NIH HHS/ -- R01GM063702/GM/NIGMS NIH HHS/ -- R01MH064801/MH/NIMH NIH HHS/ -- R33 CA120732/CA/NCI NIH HHS/ -- R33 CA120732-02/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2008 Oct 17;322(5900):390-5. doi: 10.1126/science.1160617.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Pharmacology, University of California-San Francisco and Howard Hughes Medical Institute, San Francisco, CA 94158, USA. Onn.Brandman@ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18927383" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/metabolism ; *Calcium Signaling ; Cell Membrane/metabolism ; Chemotaxis, Leukocyte ; Computer Simulation ; Endoplasmic Reticulum/metabolism ; *Feedback, Physiological ; Models, Biological ; Neutrophils/*metabolism/physiology ; Phosphatidylinositol 3-Kinases/*metabolism ; *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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  • 3
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    Interlinked fast and slow positive feedback loops drive reliable cell decisions (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-10-22
    Description: Positive feedback is a ubiquitous signal transduction motif that allows systems to convert graded inputs into decisive, all-or-none outputs. Here we investigate why the positive feedback switches that regulate polarization of budding yeast, calcium signaling, Xenopus oocyte maturation, and various other processes use multiple interlinked loops rather than single positive feedback loops. Mathematical simulations revealed that linking fast and slow positive feedback loops creates a "dual-time" switch that is both rapidly inducible and resistant to noise in the upstream signaling system.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3175767/" 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/PMC3175767/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brandman, Onn -- Ferrell, James E Jr -- Li, Rong -- Meyer, Tobias -- R01 GM030179/GM/NIGMS NIH HHS/ -- R01 GM030179-24A1/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2005 Oct 21;310(5747):496-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Pharmacology, Stanford University School of Medicine, Stanford, CA, 94305, USA. onn@stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16239477" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium Signaling ; *Cell Physiological Phenomena ; Computer Simulation ; *Feedback, Physiological ; Mathematics ; *Models, Biological ; Oocytes/physiology ; Phenotype ; Saccharomycetales/cytology/physiology ; *Signal Transduction ; Systems Biology ; Xenopus
    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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    Enhanced DNA-binding activity of a Stat3-related protein in cells transformed by the Src oncoprotein (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-07-07
    Description: Cytokines and growth factors induce tyrosine phosphorylation of signal transducers and activators of transcription (STATs) that directly activate gene expression. Cells stably transformed by the Src oncogene tyrosine kinase were examined for STAT protein activation. Assays of electrophoretic mobility, DNA-binding specificity, and antigenicity indicated that Stat3 or a closely related STAT family member was constitutively activated by the Src oncoprotein. Induction of this DNA-binding activity was accompanied by tyrosine phosphorylation of Stat3 and correlated with Src transformation. These findings demonstrate that Src can activate STAT signaling pathways and raise the possibility that Stat3 contributes to oncogenesis by Src.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yu, C L -- Meyer, D J -- Campbell, G S -- Larner, A C -- Carter-Su, C -- Schwartz, J -- Jove, R -- CA55652/CA/NCI NIH HHS/ -- DK34171/DK/NIDDK NIH HHS/ -- R01 DK034171/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1995 Jul 7;269(5220):81-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor 48109, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7541555" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line, Transformed ; *Cell Transformation, Neoplastic ; DNA/*metabolism ; DNA-Binding Proteins/*metabolism ; Growth Inhibitors/pharmacology ; Interferon-gamma/pharmacology ; *Interleukin-6 ; Leukemia Inhibitory Factor ; Lymphokines/pharmacology ; Mice ; Molecular Sequence Data ; Oncogene Protein pp60(v-src)/*physiology ; Phosphorylation ; Phosphotyrosine ; STAT3 Transcription Factor ; *Signal Transduction ; Trans-Activators/*metabolism ; Tyrosine/analogs & derivatives/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
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    A protein phosphatase 2C involved in ABA signal transduction in Arabidopsis thaliana (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-06-03
    Description: The plant hormone abscisic acid (ABA) mediates various responses such as stomatal closure, the maintenance of seed dormancy, and the inhibition of plant growth. All three responses are affected in the ABA-insensitive mutant abi1 of Arabidopsis thaliana, suggesting that an early step in the signaling of ABA is controlled by the ABI1 locus. The ABI1 gene was cloned by chromosome walking, and a missense mutation was identified in the structural gene of the abi1 mutant. The ABI1 gene encodes a protein with high similarity to protein serine or threonine phosphatases of type 2C with the novel feature of a putative Ca2+ binding site. Thus, the control of the phosphorylation state of cell signaling components by the ABI1 product could mediate pleiotropic hormone responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meyer, K -- Leube, M P -- Grill, E -- New York, N.Y. -- Science. 1994 Jun 3;264(5164):1452-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Plant Sciences, Swiss Federal Institute of Technology, Zurich.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8197457" target="_blank"〉PubMed〈/a〉
    Keywords: Abscisic Acid/*pharmacology ; Amino Acid Sequence ; Arabidopsis/enzymology/genetics/*metabolism ; *Arabidopsis Proteins ; Binding Sites ; Calcium/metabolism ; Chromosome Walking ; Cloning, Molecular ; Genes, Plant ; Genetic Markers ; Molecular Sequence Data ; Mutation ; Phosphoprotein Phosphatases/chemistry/genetics/*metabolism ; Plants, Genetically Modified ; *Signal Transduction
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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