Polyglycylase which modifies both tubulin and non-tubulin proteins, generating polyglycine side chains of variable lengths on the gamma-carboxyl groups of specific glutamate residues of target proteins. Involved in the elongation step rather than the initiation step of the polyglycylation reaction. Polyglycylates alpha-tubulin and beta-tubulin. Polyglycylates non-tubulin proteins such as nucleosome assembly protein NAP1.
Subcellular locations: Cytoplasm, Cytoskeleton, Cell projection, Cilium, Cytoplasm, Cytoskeleton, Cilium axoneme