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FEBS Lett. 1995 Dec 18;377(2):243-8.

A novel partner for the GTP-bound forms of rho and rac.

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  • 1Second Department of Pharmacology, Faculty of Medicine, Kyoto University, Japan.

Abstract

Using the yeast two hybrid system and overlay assays we identified a putative rholrac effector, citron, which interacts with the GTP-bound forms of rho and rac1, but not with cdc42. Extensive homologies to known proteins were not observed. This 183 kDa protein contains a C6H2 zinc finger, a PH domain, and a long coiled-coil forming region including 4 leucine zippers and the rholrac binding site. We recently identified three others putative rho effectors characterized by a common rho binding motif. Citron does not share this motif and displays a distinctive protein organization, thus defining a separate class of rho partners.

PMID:
8543060
[PubMed - indexed for MEDLINE]
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