CK8, or Keratin 8, type II, is a human gene encoded by KRT8. It may also be known as: Keratin, type II cytoskeletal 8; Cytokeratin-8; CK-8; Keratin-8; Type-II keratin Kb8; CARD2; CYK8; K2C8; KO. The encoded protein has an amino acid length of 483 and a mass of 53.7 kDa. CK8 is a member of the Intermediate filament family. Homologs of this gene exist in other organisms, including: Mouse, Zebrafish, Frog, Chicken.