Asef is a Cdc42-specific guanine nucleotide exchange factor.

Abstract

Asef is a member of the Dbl-family of guanine nucleotide exchange factors (GEFs) with a proposed specificity for the small GTPase Rac1. Here we investigated the specificity and regulation of Asef by measuring its GEF activity in vitro and observed hardly any activity towards Rac1, Rac2 and Rac3, or RhoA and TC10. In contrast, various purified Asef protein… (More)

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