ARHGAP4（Rho GTPase activating protein 4），癌症关联基因，基因ID：393，该基因编码rhoGAP家族的一个成员，在调节属于RAS超家族的小GTP结合蛋白中起作用大鼠原基因编码的蛋白质定位于高尔基复合体，能重新分布到微管大鼠蛋白在体外刺激某些rho-gtpase活性。在肾病性尿崩症患者中发现该基因及其邻近基因的基因组缺失。已发现该基因编码不同亚型的多个转录变体。[由RefSeq提供，2009年9月]This gene encodes a member of the rhoGAP family of proteins which play a role in the regulation of small GTP-binding proteins belonging to the RAS superfamily. The protein encoded by the orthologous gene in rat is localized to the Golgi complex and can redistribute to microtubules. The rat protein stimulates the activity of some Rho GTPases in vitro. Genomic deletions of this gene and a neighboring gene have been found in patients with nephrogenic diabetes insipidus. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq， Sep 2009]。