RHOG(Ras homolog gene family member G)属于Rho GTPase家族,这是一个Ras超家族的重要分支,主要调控细胞骨架重组、细胞迁移和粘附等过程。Rho GTPases作为分子开关,通过GTP结合(激活态)和GDP结合(失活态)的循环来传递信号。RHOG在造血细胞和内皮细胞中高表达,参与免疫细胞趋化、吞噬作用及血管生成。其激活后通过下游效应分子(如WAVE复合物、PAK激酶)调控肌动蛋白动态组装,影响细胞极性。RHOG功能异常与多种疾病相关:突变可能导致中性粒细胞迁移缺陷(如白细胞黏附缺陷症样表型),而过表达与肿瘤转移、炎症性疾病(如类风湿关节炎)相关,因其促进侵袭性伪足形成。RHOG表达下调则可能损害免疫细胞功能,增加感染风险。Rho家族共性包括:均含G结构域(结合GTP/GDP)、受GEF(鸟苷酸交换因子)激活及GAP(GTP酶激活蛋白)失活调控,并通过相似通路影响细胞形态。例如,RHOA、RAC1与RHOG共享对肌动蛋白的调控,但各自主导不同细胞行为(如RHOA介导收缩,RAC1驱动片状伪足)。该家族基因的突变或表达失衡常导致癌症、神经退行性疾病和免疫紊乱。
This gene encodes a member of the Rho family of small GTPases, which cycle between inactive GDP-bound and active GTP-bound states and function as molecular switches in signal transduction cascades. Rho proteins promote reorganization of the actin cytoskeleton and regulate cell shape, attachment, and motility. The encoded protein facilitates translocation of a functional guanine nucleotide exchange factor (GEF) complex from the cytoplasm to the plasma membrane where ras-related C3 botulinum toxin substrate 1 is activated to promote lamellipodium formation and cell migration. Two related pseudogene have been identified on chromosomes 20 and X. [provided by RefSeq, Aug 2011]
该基因编码Rho家族小GTP酶的的成员,其中非活性GDP结合和积极的GTP结合状态和功能在信号转导分子级联交换机之间循环。 RHO蛋白质促进细胞骨架的重组和调节细胞形状,附件和运动。所编码的蛋白质有利于官能鸟嘌呤核苷酸交换因子的易位从细胞质到质膜,其中Ras相关C3肉毒杆菌毒素底物1被激活,以促进板状伪足形成和细胞迁移(GEF)络合物。两个相关的假已经确定染色体上20和X [由RefSeq的,2011年8月提供]
RHOG基因(以及对应的蛋白质)的细胞分布位置:
RHOG基因的本体(GO)信息:
名称 |
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5132 Salmonella infection [PATH:hsa05132] |
5131 Shigellosis [PATH:hsa05131] |
5100 Bacterial invasion of epithelial cells [PATH:hsa05100] |
名称 |
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Axon guidance |
Developmental Biology |
G alpha (12/13) signalling events |
GPCR downstream signaling |
GPVI-mediated activation cascade |
Hemostasis |
Platelet activation, signaling and aggregation |
Rho GTPase cycle |
RHO GTPase Effectors |
RHO GTPases activate KTN1 |
Sema4D in semaphorin signaling |
Sema4D induced cell migration and growth-cone collapse |
Semaphorin interactions |
Signaling by GPCR |
Signaling by Rho GTPases |
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