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Transformation of rat fibroblasts by phospholipase C-gamma 1 overexpression is accompanied by tyrosine dephosphorylation of paxillin SCIE SCOPUS

Title
Transformation of rat fibroblasts by phospholipase C-gamma 1 overexpression is accompanied by tyrosine dephosphorylation of paxillin
Authors
Chang, JSIwashita, SLee, YHKim, MJRyu, SHSuh, PG
Date Issued
1999-10-22
Publisher
ELSEVIER SCIENCE BV
Abstract
We previously have shown that the overexpression of phospholipase C-gamma l (PLC-gamma l) in rat 3Y1 fibroblasts results in malignant transformation (Chang, J.-S., Noh, D.Y., Park, I.A., Kim, M.J., Song, H., Ryu, S.H. and Suh, P.-G. (1997) Cancer Res. 57, 5465-5468), The transformed cells, which initially are in an elongated and flat form after seeding in plastic dishes, become rounded during continued culture, We found that tyrosine dephosphorylation of paxillin accompanies this morphological change of the transformed cells and that PLC-gamma l co-immunoprecipitates together with paxillin and vice versa, but not after the cells have become round, Transformed cells growing on fibronectin-pre-coated dishes regain their flat morphology and this is accompanied by paxillin tyrosine phosphorylation, Furthermore, immunoprecipitation analysis showed that paxillin forms a heteromeric complex with PLC-gamma l in cells grown on fibronectin, These results suggest that a complex formation between paxillin and PLC-gamma l may play a role in cell-substrate adhesion. (C) 1999 Federation of European Biochemical Societies.
Keywords
phospholipase C-gamma 1; paxillin; cell adhesion; phosphorylation; FOCAL ADHESION KINASE; SIGNALING MOLECULES; C-GAMMA; PROTEIN; CELLS; LOCALIZATION; ACTIVATION; BINDING; PHOSPHORYLATION; CYTOSKELETON
URI
https://oasis.postech.ac.kr/handle/2014.oak/20228
DOI
10.1016/S0014-5793(99)01338-1
ISSN
0014-5793
Article Type
Article
Citation
FEBS LETTERS, vol. 460, no. 1, page. 161 - 165, 1999-10-22
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류성호RYU, SUNG HO
Dept of Life Sciences
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