function:Polyglutamylase which preferentially modifies alpha-tubulin. Involved in the side-chain elongation step of the polyglutamylation reaction rather than in the initiation step.,similarity:Belongs to the tubulin--tyrosine ligase family.,similarity:Contains 1 TTL domain.,
Cytoplasm . Cytoplasm, cytoskeleton . Cytoplasm, cytoskeleton, cilium axoneme . Cytoplasm, cytoskeleton, cilium basal body . CEP41 is required for its transport between the basal body and the cilium axoneme. .