TTC31 is a symbol for the gene, Tetratricopeptide repeat domain 31, in humans. Other names include: Tetratricopeptide repeat protein 31; TPR repeat protein 31. The encoded protein has an amino acid length of 519 and a mass of 57.1 kDa. Other isoforms may exist. This gene shares homology with other species, including: Frog, Chicken.