Multiple Types of Guanine Nucleotide Exchange Factors (GEFs) for Rab Small GTPases

Cell Structure and Function

Morié Ishida¹  Mai E. Oguchi¹  Mitsunori Fukuda¹ 

[1] Laboratory of Membrane Trafficking Mechanisms, Department of Developmental Biology and Neurosciences, Graduate School of Life Sciences, Tohoku University

关键词: guanine nucleotide exchange factor (GEF);    Rab small GTPase;    longin domain;    Rab cascade;    autophagy;   

DOI  :  10.1247/csf.16008

学科分类：分子生物学，细胞生物学和基因

来源: Japan Society for Cell Biology

【 摘 要 】

References(193)Cited-By(1)Rab small GTPases are highly conserved master regulators of membrane traffic in all eukaryotes. The same as the activation and inactivation of other small GTPases, the activation and inactivation of Rabs are tightly controlled by specific GEFs (guanine nucleotide exchange factors) and GAPs (GTPase-activating proteins), respectively. Although almost all Rab-GAPs reported thus far have a TBC (Tre-2/Bub2/Cdc16)/Rab-GAP domain in common, recent accumulating evidence has indicated the existence of a number of structurally unrelated types of Rab-GEFs, including DENN proteins, VPS9 proteins, Sec2 proteins, TRAPP complexes, heterodimer GEFs (Mon1–Ccz1, HPS1–HPS4 (BLOC-3 complex), Ric1–Rgp1 and Rab3GAP1/2), and other GEFs (e.g., REI-1 and RPGR). In this review article we provide an up-to-date overview of the structures and functions of all putative Rab-GEFs in mammals, with a special focus on their substrate Rabs, interacting proteins, associations with genetic diseases, and intracellular localizations.

【 授权许可】

Unknown