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DENND4s exchange GTP for GDP on RAB10

Stable Identifier
R-HSA-8876188
Type
Reaction
Species
Homo sapiens
Compartment
Locations in the PathwayBrowser
Summation

RAB10 has well characterized roles in basolateral sorting and GLUT4 transport and has more recently been shown to contribute to ER dynamics and morphology (Chen et al, 1993; Babbey et al, 2006; Schuck et al, 2007; Sano et al, 2008; Chen et al, 2012; Chen and Lippincott-Schwarz, 2013; English and Voeltz, 2013). In vitro, DENN4 family members A, B and C show RAB10-specific GEF activity, and DENN4B staining colocalizes with that of RAB10 in HeLa cells (Yoshimura et al, 2010). Consistent with this, coexpression of DENND4C and RAB10 in HEK293 cells increases the fraction of GTP-bound RAB10, and DENND4C knockdown in insulin-stimulated 3T3 cells reduces the trafficking of GLUT4 to the plasma membrane (Sano et al, 2011). Interaction of RAB10:GDP with its GEFs promotes release of GDP, allowing GTP to bind, and precludes the interaction of RAB10 with GDI and CHM proteins.

Participants
Participant Of
Catalyst Activity
Catalyst Activity
Title
Rab guanyl-nucleotide exchange factor activity of DENND4s [cytosol]
Physical Entity
Activity
Orthologous Events