The function of MATCAP1 (microtubule associated tyrosine carboxypeptidase 1, ENSG00000196123) is as follows. Tyrosine carboxypeptidase that removes the C-terminal tyrosine residue of alpha-tubulin, thereby regulating microtubule dynamics and function (PubMed:35482892). Also able to remove the C- terminal phenylalanine residue of alpha-tubulin TUBA8 (PubMed:35482892). Recognizes adjacent tubulin dimers along the same protofilament (PubMed:35482892). .