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  • Protein-Tyrosine Kinases/metabolism  (2)
  • American Association for the Advancement of Science (AAAS)  (2)
  • 1
    Publication Date: 1998-07-17
    Description: The leukocyte-specific adapter molecule SLP-76 (Src homology 2 domain-containing leukocyte protein of 76 kilodaltons) is rapidly phosphorylated on tyrosine residues after receptor ligation in several hematopoietically derived cell types. Mice made deficient for SLP-76 expression contained no peripheral T cells as a result of an early block in thymopoiesis. Macrophage and natural killer cell compartments were intact in SLP-76-deficient mice, despite SLP-76 expression in these lineages in wild-type mice. Thus, the SLP-76 adapter protein is required for normal thymocyte development and plays a crucial role in translating signals mediated by pre-T cell receptors into distal biochemical events.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clements, J L -- Yang, B -- Ross-Barta, S E -- Eliason, S L -- Hrstka, R F -- Williamson, R A -- Koretzky, G A -- GM53256/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1998 Jul 17;281(5375):416-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, University of Iowa College of Medicine, Iowa City, IA 52242, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9665885" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing ; Animals ; B-Lymphocytes/cytology/immunology ; Gene Targeting ; Immunoglobulin M/blood ; Killer Cells, Natural/cytology ; *Leukopoiesis ; Lymph Nodes/cytology ; Lymphocyte Activation ; Lymphocyte Count ; Macrophages/cytology ; Mice ; Mice, Inbred C57BL ; Phosphoproteins/genetics/*physiology ; Protein-Tyrosine Kinases/metabolism ; Receptors, Antigen, T-Cell/metabolism ; Signal Transduction ; Spleen/cytology ; T-Lymphocytes/*cytology ; Thymus Gland/cytology ; ZAP-70 Protein-Tyrosine Kinase
    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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  • 2
    Publication Date: 1993-04-23
    Description: Surface expression of the CD45 tyrosine phosphatase is essential for the T cell antigen receptor (TCR) to couple optimally with its second messenger pathways. CD45 may be required to dephosphorylate a TCR-activated protein tyrosine kinase, which then transduces an activation signal from the TCR. A chimeric molecule that contained extracellular and transmembrane sequences from an allele of a major histocompatibility class I molecule and cytoplasmic sequences of CD45 restored TCR signaling in a CD45-deficient mutant T cell line. Thus, expression of the complex extracellular domain of CD45 is not required for the TCR to couple to its signaling machinery.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hovis, R R -- Donovan, J A -- Musci, M A -- Motto, D G -- Goldman, F D -- Ross, S E -- Koretzky, G A -- CA56050-01/CA/NCI NIH HHS/ -- CA56843-02/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Apr 23;260(5107):544-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, University of Iowa College of Medicine, Iowa City 52242.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8475387" target="_blank"〉PubMed〈/a〉
    Keywords: Antigens, CD45/genetics/*metabolism ; Base Sequence ; Cell Line ; Cell Membrane/metabolism ; Cytoplasm/metabolism ; Enzyme Activation ; Humans ; Inositol Phosphates/metabolism ; Membrane Proteins/metabolism ; Molecular Sequence Data ; Phosphorylation ; Protein-Tyrosine Kinases/metabolism ; Receptors, Antigen, T-Cell/*metabolism ; Recombinant Fusion Proteins/metabolism ; Second Messenger Systems ; *Signal Transduction ; T-Lymphocytes/*metabolism ; Transfection ; Tyrosine/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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