期刊
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
卷 400, 期 3, 页码 413-418出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2010.08.092
关键词
Hsp70; Molecular chaperone; Rap1; Guanine nucleotide exchange factor; WW domain; Cell adhesion
资金
- NIH [CA107793, AR052925]
BAG3, a member of the Hsc70 binding co-chaperone BAG-family proteins, has critical roles in regulating actin organization, cell adhesion, cell motility and tumor metastasis. The PDZ domain containing guanine nucleotide exchange factor 2 (PDZGEF2) was cloned as a BAG3-interacting protein PDZGEF2 induces activation of Rap1 and increases integrin-mediated cell adhesion. The PPDY motif at the C-terminus of PDZGEF2 binds to the WW domain of BAG3 in vitro and in vivo BAG3 deletion mutant lacking the WW domain lose its cell adhesion and motility activity Gene knockdown of PDZGEF2 leads to the loss of cell adhesion on fibronectin-coated plates while BAG3 overexpression increases cell adhesion in Cos7 cells, but not in PDZGEF2 gene knockdown cells indicating that PDZGEF2 is a critical partner for BAG3 in regulating cell adhesion (C) 2010 Elsevier Inc. All rights reserved
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