RAB4A is a master regulator of receptor recycling from endocytic compartments to the plasma membrane. It is involved in transferrin receptor recycling and EGFR trafficking and signalling. TBC (Tre2/Bub2/Cdc16) domain family member 16 (TBC1D16), is a GTPase activating protein for Rab4A and enhances the intrinsic rate of GTP hydrolysis by RAB4A (Goueli et al. 2012).
Goueli, BS, Pfeffer, SR, Finger, EC, Powell, MB
GTPase activity of GGC-RAB4A:GTP [cytoplasmic vesicle membrane]
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