Tubulin tyrosine ligase 3

UniProtKB accession:  B2GUB3

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Monoglycylase which modifies alpha- and beta-tubulin, adding a single glycine on the gamma-carboxyl groups of specific glutamate residues to generate monoglycine side chains within the C-terminal tail of tubulin. Not involved in elongation step of the polyglycylation reaction (PubMed:28576883). Preferentially glycylates a beta-tail peptide over the alpha-tail, although shifts its preference toward alpha-tail as beta-tail glutamylation increases (PubMed:28576883). Competes with polyglutamylases for modification site on beta-tubulin substrate, thereby creating an anticorrelation between glycylation and glutamylation reactions (PubMed:28576883). Together with TTLL8, mediates microtubule glycylation of primary and motile cilia, which is essential for their stability and maintenance (By similarity).