Tubulin-specific chaperone D (TBCD)

Tubulin-folding protein implicated in step one of the tubulin folding pathway and required for tubulin complex assembly. Involved in the regulation of microtubule polymerization or depolymerization, it modulates microtubule dynamics by capturing GTP-bound beta-tubulin (TUBB).

Its ability to interact with beta tubulin is controlled via its interaction with ARL2. Acts as a GTPase-activating protein (GAP) for ARL2.