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• W1979962277 startingPage "1046" @default.
• W1979962277 abstract "Rap2 belongs to the Ras family of small GTP-binding proteins, but its specific signaling role is unclear. By yeast two-hybrid screening, we have found that the Caenorhabditis elegans ortholog of Rap2 interacts with a protein containing a Rho-GTPase-activating protein (RhoGAP) domain, ZK669.1a, whose human ortholog PARG1 exhibits RhoGAP activity in vitro. ZK669.1a and PARG1 share a homology region with previously unknown function, designated the ZK669.1a and PARG1 homology (ZPH) region. Here we show that the ZPH region of PARG1 mediates interaction with Rap2. PARG1 interacted with Rap2 in a GTP-dependent manner but not with Ras or Rap1. We also show that PARG1 and its mutant lacking the ZPH region induce typical cytoskeletal changes for Rho inactivation in fibroblasts. Rap2 suppressed this in vivo action of PARG1 but not that of the mutant PARG1. These results suggest that PARG1 is a putative specific effector of Rap2 to regulate Rho." @default.
• W1979962277 created "2016-06-24" @default.
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• W1979962277 date "2005-04-01" @default.
• W1979962277 modified "2023-10-17" @default.
• W1979962277 title "PARG1, a protein-tyrosine phosphatase-associated RhoGAP, as a putative Rap2 effector" @default.
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• W1979962277 doi "https://doi.org/10.1016/j.bbrc.2005.02.069" @default.
• W1979962277 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15752761" @default.
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