Mimicking GEFs: a common theme for bacterial pathogens.

Mimicking GEFs: a common theme for bacterial pathogens.
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DOI:
10.1111/j.1462-5822.2011.01703.x
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发表时间:
2012-01
影响因子:
3.4
通讯作者:
Alto NM
Alto NM
中科院分区:
生物学2区
文献类型:
--
作者:
Orchard RC;Alto NM

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小分子量GTP酶是真核生物信号转导的主要调节因子,使其成为细菌毒力因子的主要靶标。在这里,我们回顾了最近的进展,了解细菌III型分泌的效应蛋白如何直接激活GT3信号级联。具体来说,我们专注于SopE/WxxxE家族的效应器,功能上模仿鸟嘌呤核苷酸交换因子(GEFs):Rho家族GTP酶的内源性激活剂。最近的结构和生物化学研究提供了敏锐的洞察力的信号转导能力和底物特异性的细菌GEFs。此外,这些细菌GEF显示出迷人的细胞生物学特性,为宿主细胞生理学和感染性疾病策略提供了见解。
Small molecular weight GTPases are master regulators of eukaryotic signaling, making them prime targets for bacterial virulence factors. Here, we review the recent advances made in understanding how bacterial type III secreted effector proteins directly activate GTPase signaling cascades. Specifically we focus on the SopE/WxxxE family of effectors that functionally mimic guanine nucleotide exchange factors (GEFs): the endogenous activators of Rho-family GTPases. Recent structural and biochemical studies have provided keen insight into both the signaling potency and substrate specificity of bacterial GEFs. Additionally, these bacterial GEFs display fascinating cell biological properties that provide insight into both host cell physiology and infectious disease strategies.
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