Myo5A-GTD and Myo5B-GTD selectively activate Rab11a-dependent membrane tethering.
A, schematic representation of liposome turbidity assays (shown in B and C) for the various Rab GTPases (Rab11a, Rab1a, Rab4a, Rab9a, and Rab14) in the presence of Myo5-GTDs and GTP. B and C, Myo5-GTDs specifically promote efficient membrane tethering mediated by the cognate Rab GTPase, Rab11a. Liposome turbidity assays were employed using Myo5A-GTD (B) or Myo5B-GTD (C) and GTP, as described in the legend for Fig. 8, B and C, for Rab11a, Rab1a, Rab4a, Rab9a, and Rab14 GTPases.