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  • Microtubule organizing center  (2)
  • Protein Binding  (2)
  • [abr] HD5; IV^3NeuGc-nLcOse"4Cer  (2)
  • 1
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    Binding of transforming protein, P47gag-crk, to a broad range of phosphotyrosine-containing proteins (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-06-22
    Description: Although the oncogene product of CT10 virus, P47gag-crk, does not itself phosphorylate proteins at tyrosine residues, it elevates phosphotyrosine in transformed cells. The P47gag-crk oncoprotein contains SH2 and SH3 domains, which are conserved in several proteins involved in signal transduction, including nonreceptor tyrosine kinases. P47gag-crk bound in vitro to phosphotyrosine-containing proteins from crk-transformed cells and from cells transformed by oncogenic tyrosine kinases. The association between P47gag-crk and p60v-src, a phosphotyrosine-containing protein, was abolished by dephosphorylation of p60v-src. This suggests that the SH2 and SH3 regions function to regulate protein interactions in a phosphotyrosine-dependent manner.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matsuda, M -- Mayer, B J -- Fukui, Y -- Hanafusa, H -- AI 07233/AI/NIAID NIH HHS/ -- CA44356/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1990 Jun 22;248(4962):1537-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Rockefeller University, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1694307" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line, Transformed ; Cell Transformation, Viral ; Oncogene Protein v-crk ; Phosphorylation ; Phosphotyrosine ; Precipitin Tests ; Protein Binding ; Protein-Tyrosine Kinases/*metabolism ; Proto-Oncogene Proteins/*metabolism ; Retroviridae Proteins/*metabolism ; *Signal Transduction ; 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
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Sequential regulation of DOCK2 dynamics by two phospholipids during neutrophil chemotaxis (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-03-28
    Description: During chemotaxis, activation of the small guanosine triphosphatase Rac is spatially regulated to organize the extension of membrane protrusions in the direction of migration. In neutrophils, Rac activation is primarily mediated by DOCK2, an atypical guanine nucleotide exchange factor. Upon stimulation, we found that DOCK2 rapidly translocated to the plasma membrane in a phosphatidylinositol 3,4,5-trisphosphate-dependent manner. However, subsequent accumulation of DOCK2 at the leading edge required phospholipase D-mediated synthesis of phosphatidic acid, which stabilized DOCK2 there by means of interaction with a polybasic amino acid cluster, resulting in increased local actin polymerization. When this interaction was blocked, neutrophils failed to form leading edges properly and exhibited defects in chemotaxis. Thus, intracellular DOCK2 dynamics are sequentially regulated by distinct phospholipids to localize Rac activation during neutrophil chemotaxis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3761877/" 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/PMC3761877/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nishikimi, Akihiko -- Fukuhara, Hideo -- Su, Wenjuan -- Hongu, Tsunaki -- Takasuga, Shunsuke -- Mihara, Hisashi -- Cao, Qinhong -- Sanematsu, Fumiyuki -- Kanai, Motomu -- Hasegawa, Hiroshi -- Tanaka, Yoshihiko -- Shibasaki, Masakatsu -- Kanaho, Yasunori -- Sasaki, Takehiko -- Frohman, Michael A -- Fukui, Yoshinori -- R01 GM084251/GM/NIGMS NIH HHS/ -- R01GM71520/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Apr 17;324(5925):384-7. doi: 10.1126/science.1170179. Epub 2009 Mar 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19325080" target="_blank"〉PubMed〈/a〉
    Keywords: 1-Butanol/pharmacology ; Actins/metabolism ; Animals ; Cell Line ; Cell Membrane/*metabolism ; Cell Polarity ; *Chemotaxis, Leukocyte ; Enzyme Inhibitors/pharmacology ; GTPase-Activating Proteins/chemistry/genetics/*metabolism ; Humans ; Mice ; Neutrophils/cytology/drug effects/*physiology ; Phosphatidic Acids/*metabolism/pharmacology ; Phosphatidylinositol Phosphates/*metabolism ; Phospholipase D/genetics/metabolism ; Protein Binding ; Pseudopodia/metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; rac GTP-Binding Proteins/metabolism
    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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  • 3
    Electronic Resource
    Electronic Resource
    Detection of glycoproteins as tumor-associated Hanganutziu-Deicher antigen in human gastric cancer cell line, NUGC4
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 160 (1989), S. 1149-1154 
    Details
    ISSN: 0006-291X
    Keywords: [abr] GSL; glycosphingolipid ; [abr] HD3; II^3NeuGc-LacCer ; [abr] HD5; IV^3NeuGc-nLcOse"4Cer ; [abr] HD; Hanganutziu-Deicher ; [abr] NeuGc; N-glycolylneuraminicacid
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0006-291X(89)80123-8
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  • 4
    Electronic Resource
    Electronic Resource
    Detection of glycoproteins as tumor-associated Hanganutziu-Deicher antigen in human gastric cancer cell line, NUGC4
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 160 (1989), S. 1149-1154 
    Details
    ISSN: 0006-291X
    Keywords: [abr] GSL; glycosphingolipid ; [abr] HD3; II^3NeuGc-LacCer ; [abr] HD5; IV^3NeuGc-nLcOse"4Cer ; [abr] HD; Hanganutziu-Deicher ; [abr] NeuGc; N-glycolylneuraminicacid
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0006-291X(89)80123-8
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  • 5
    Electronic Resource
    Electronic Resource
    Role of the MT-MTOC complex in determination of the cellular locomotory unit inDictyostelium (1985)
    Springer
    Protoplasma 127 (1985), S. 133-146 
    Details
    ISSN: 1615-6102
    Keywords: Cytokinesis ; Dictyostelium ; Locomotion microtubule ; Motility ; Microtubule organizing center
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The microtubule inhibitors, ethyl-N-phenylcarbamate (EPC) and thiabendazole (TB), which disrupt cytoplasmic microtubules and induce giant cells inDictyostelium (Kitanishi et al. 1984), were found to induce the occurrence of multiple microtubule organizing centers (MTOCs) in these giant cells. Probing was done by indirect immunofluorescence using monoclonal anti-α-tubulin. The nuclear DNA content of the giant cells increased in parallel with an increase in the number of MTOCs, as shown by microspectrophotometory of cells stained with the fluorescent DNA stain DAPI (4′,6-diamidino-2-phenylindole). Shortly after the inhibitors were removed, the MTOCs of the giant cell formed multiple mitotic spindles or synchronously reconstituted numerous cytoplasmic MT-networks. These events apparently reflected the cell-cycle dependent activities of the MTOCs at the time the inhibitors were removed. When multiple spindles were formed, numerous cytoplasmic MT-networks became organized subsequent to the breakdown of the spindles. In either case, reconstitution of the cytoplasmic MT-networks was followed by apparently normal cytokinesis resulting in the production of many daughter cells each containing a single MT-MTOC complex. The evidence suggested the possible mechanism of the induction of multiple MTOCs, and implied that the MT-MTOC complex is significant in the cytokinesis ofDictyostelium by determining the cell locomotory unit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01273710
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  • 6
    Electronic Resource
    Electronic Resource
    Dictyostelium MTOC: Structure and linkage to the nucleus (1985)
    Springer
    Protoplasma 127 (1985), S. 212-221 
    Details
    ISSN: 1615-6102
    Keywords: Dictyostelium ; Microtubule(s) ; Microtubule organizing center ; Saltatory movement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The microtubule organizing center (MTOC) was isolated fromDictyostelium discoideum to investigate the fine structure of the components as the first step in clarifying its molecular organization and function. The isolation protocol was designed to preserve microtubules bound to the MTOC by using indirect immunofluorescence employing anti-α-tubulin. After cell lysis with Triton X-100, the MTOCs were isolated in association with the nucleus by centrifugation in a microtubule-stabilizing buffer. The MTOC was found to be bound to the nucleus via an electron-dense fibrous structure, and this linkage could not be destroyed by KI, KCl, or sonication. We named this complex composed of microtubules, MTOC, and the anchor the MTOC-complex. Negative staining of the isolated MTOC-complex revealed that distinct vesicles decorated with 11-nm tacks were associated with microtubules radiating from the MTOC. Fine filaments, 4–5 nm wide, were also present close to the MTOC, aligned parallel to the microtubules. The three-dimensional profile of the central core of the MTOC, examined by transmission electron microscopy of serial thin sections of the isolated MTOC fraction supplemented by a microcomputer analysis, was concluded to be a matchbox-like cuboid (180 × 210 × 370 nm) of 15 layers. We propose that theDictyostelium MTOC is the structural domain of a more complicated unit composed of 1. MTOC, 2. microtubules, and 3. a firm fibrous linkage connecting the MTOC to the nucleus, with the MTOC core being a multilayered cuboid, associated with nodules and surrounded by amorphous electron-dense material including peculiar vesicles with 11 nm-tacks. The possible functions of these domains are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01276265
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