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| http://purl.uniprot.org/citations/17562871 | http://www.w3.org/2000/01/rdf-schema#comment | "The significance of multiprotein signaling complexes in cell motility is becoming increasingly important. We have previously shown that phospholipase Cgamma1 (PLCgamma1) is critical for integrin-mediated cell spreading and motility (N. Jones et al., J. Cell Sci. 118:2695-2706, 2005). In the current study we show that, on a basement membrane-type matrix, PLCgamma1 associates with the adaptor protein GIT1 and the Rac1/Cdc42 guanine exchange factor beta-Pix; GIT1 and beta-Pix form tight complexes independently of PLCgamma1. The association of PLCgamma1 with the complex requires both GIT1 and beta-Pix and the specific array region (gammaSA) of PLCgamma1. Mutations of PLCgamma1 within the gammaSA region reveal that association with this complex is essential for the phosphorylation of PLCgamma1 and the progression to an elongated morphology after integrin engagement. Short interfering RNA (siRNA) depletion of either beta-Pix or GIT1 inhibited cell spreading in a fashion similar to that seen with siRNA against PLCgamma1. Furthermore, siRNA depletion of PLCgamma1, beta-Pix, or GIT1 inhibited Cdc42 and Rac1 activation, while constitutively active forms of Cdc42 or Rac1, but not RhoA, were able to rescue the elongation of these cells. Signaling of the PLCgamma1/GIT1/beta-Pix complex to Cdc42/Rac1 was found to involve the activation of calpains, calcium-dependent proteases. Therefore, we propose that the association of PLCgamma1 with complexes containing GIT1 and beta-Pix is essential for its role in integrin-mediated cell spreading and motility. As a component of this complex, PLCgamma1 is also involved in the activation of Cdc42 and Rac1."xsd:string |
| http://purl.uniprot.org/citations/17562871 | http://purl.org/dc/terms/identifier | "doi:10.1128/mcb.00778-07"xsd:string |
| http://purl.uniprot.org/citations/17562871 | http://purl.uniprot.org/core/author | "Jones N.P."xsd:string |
| http://purl.uniprot.org/citations/17562871 | http://purl.uniprot.org/core/author | "Katan M."xsd:string |
| http://purl.uniprot.org/citations/17562871 | http://purl.uniprot.org/core/date | "2007"xsd:gYear |
| http://purl.uniprot.org/citations/17562871 | http://purl.uniprot.org/core/name | "Mol Cell Biol"xsd:string |
| http://purl.uniprot.org/citations/17562871 | http://purl.uniprot.org/core/pages | "5790-5805"xsd:string |
| http://purl.uniprot.org/citations/17562871 | http://purl.uniprot.org/core/title | "Role of phospholipase Cgamma1 in cell spreading requires association with a beta-Pix/GIT1-containing complex, leading to activation of Cdc42 and Rac1."xsd:string |
| http://purl.uniprot.org/citations/17562871 | http://purl.uniprot.org/core/volume | "27"xsd:string |
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