RHOU GTPase cycle
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RHO GTPase RHOU (Wrch-1) possesses a high intrinsic guanine nucleotide exchange activity and is constitutively present in the active GTP-bound state in the absence of guanine nucleotide exchange factors (GEFs) (Shutes et al. 2004, Saras et al. 2004). RHOU does not possess a GTPase activity (Saras et al. 2004). RHOU has been reported to interact with some GTPase activator proteins (GAPs) (Bagci et al. 2020), which may serve as effectors that enable cross-talk with other RHO GTPases. RHOU was shown to regulate cytoskeletal dynamics, cell migration and adhesion. RHOU is expressed during embryonic development and regulates cardiac (Dickover et al. 2014) and intestinal (Slaymi et al. 2019) development. RHOU activates JNK and AKT signaling during cell migration (Chuang et al. 2007).<br>For review, please refer to Faure and Fort 2015, and Hodge and Ridley 2020.
RHO GTPase RHOU(Wrch-1)具有高内源性鸟嘌呤核苷酸交换活性,在缺乏鸟嘌呤核苷酸交换因子(GEFs)的情况下,持续存在于活性GTP结合状态(Shutes 等人,2004年;Saras 等人,2004年)。RHOU不具备GTPase活性(Saras 等人,2004年)。据报道,RHOU与某些GTPase激活蛋白(GAPs)相互作用(Bagci 等人,2020年),这些蛋白可能作为效应器,实现与其他RHO GTPase之间的信号交叉。研究表明,RHOU调控细胞骨架动态、细胞迁移和粘附。RHOU在胚胎发育过程中表达,并调节心脏(Dickover 等人,2014年)和肠道(Slaymi 等人,2019年)发育。RHOU在细胞迁移过程中激活JNK和AKT信号通路(Chuang 等人,2007年)。欲了解更多信息,请参阅 Faure 和 Fort(2015年)以及 Hodge 和 Ridley(2020年)的综述。
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