TTLL9 is a symbol for the gene, Tubulin tyrosine ligase like 9, in humans. Other names include: Probable tubulin polyglutamylase TTLL9; Probable tubulin polyglutamylase TTLL9 ; Tubulin--tyrosine ligase-like protein 9; C20orf125; dJ310O13.1; tubulin tyrosine ligase-like family member 9. The encoded protein is an enzyme with an amino acid length of 439 and a mass of 51.5 kDa. Other isoforms may exist. This gene shares homology with other species, including: Mouse, Zebrafish.