p600, a unique protein required for membrane morphogenesis and cell survival.
In this article, we identify and characterize p600, a unique 600-kDa retinoblastoma protein- and calmodulin-binding protein. In the nucleus, p600 and retinoblastoma protein seem to act as a chromatin scaffold. In the cytoplasm, p600 and clathrin form a meshwork structure, which could contribute to cytoskeletal organization and membrane morphogenesis. Reduced ... expression of p600 with interference RNA abrogates integrin-mediated ruffled membrane formation and, furthermore, prevents activation of integrin-mediated survival pathways. Consequently, knockdown of p600 sensitizes cells to apoptosis induced by cell detachment. These findings provide mechanistic insight into the regulation of membrane-proximal events in tumorigenesis.
Mesh Terms:
Apoptosis, Calmodulin, Calmodulin-Binding Proteins, Cell Membrane, Cell Surface Extensions, Cell Survival, Cell Transformation, Neoplastic, Cells, Cultured, Cytoskeletal Proteins, Enzyme Activation, Fibroblasts, Humans, Integrins, Molecular Sequence Data, Nuclear Proteins, Protein Binding, RNA Interference, Retinoblastoma Protein
Apoptosis, Calmodulin, Calmodulin-Binding Proteins, Cell Membrane, Cell Surface Extensions, Cell Survival, Cell Transformation, Neoplastic, Cells, Cultured, Cytoskeletal Proteins, Enzyme Activation, Fibroblasts, Humans, Integrins, Molecular Sequence Data, Nuclear Proteins, Protein Binding, RNA Interference, Retinoblastoma Protein
Proc. Natl. Acad. Sci. U.S.A.
Date: Oct. 18, 2005
PubMed ID: 16214886
View in: Pubmed Google Scholar
Download Curated Data For This Publication
145428
Switch View:
- Interactions 2