KLK12 is a symbol for the gene, Kallikrein related peptidase 12, in humans. Other names include: Kallikrein-12; Kallikrein-like protein 5; KLK-L5; Kallikrein-12 ; KLKL5; kallikrein-related peptidase 12. The encoded protein is an enzyme with an amino acid length of 248 and a mass of 26.7 kDa. Other isoforms may exist. KLK12 is a member of the Peptidase S1 family, Kallikrein subfamily. This gene shares homology with other species, including: Mouse, Rat.