TBC1D3 associates with RAB5

Stable Identifier
Reaction [binding]
Homo sapiens
TBC1D3 binds RAB5
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TBC1 domain family member 3 (TBC1D3) belongs to the TBC/RabGAPs family and contains a TBC (Tre-2/Bub2/Cdc16) domain but has no GAP activity. It regulates macropinocytosis in response to epidermal growth factor (EGF), and facilitates crosstalk between the GTPases ARF6 and RAB5 (Frittoli et al. 2008). TBC1D3 binds to the ARF6 effector protein GGA (Golgi-localized, gamma-ear-containing, ARF-binding protein), which binds to a complex consisting of the RAB5GEF, rabaptin 5-associated exchange factor for Rab5 (RABEX5), and the Rab5 effector Rabaptin-5, thereby providing an indirect interaction between TBC1D3 and RAB5. Although TBC1D3 associates with Rab5, it may operate as a Rab5 effector, and not as a Rab5 GAP (Huaiping et al. 2007, Wainszelbaum et al. 2008).

Literature References
PubMed ID Title Journal Year
18319245 The hominoid-specific oncogene TBC1D3 activates Ras and modulates epidermal growth factor receptor signaling and trafficking

Kirkpatrick, DS, Kong, C, Srikanth, P, Wainszelbaum, MJ, Gygi, SP, Barbieri, MA, Charron, AJ, Stahl, PD

J. Biol. Chem. 2008
18199687 The primate-specific protein TBC1D3 is required for optimal macropinocytosis in a novel ARF6-dependent pathway

Fukuda, M, Pizzigoni, A, Di Fiore, PP, Palamidessi, A, Scita, G, Troglio, F, Troilo, A, Frittoli, E, Garrè, M, Confalonieri, S, Lanzetti, L

Mol. Biol. Cell 2008
Orthologous Events
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