CYP1A1 is a symbol for the gene, Cytochrome P450 family 1 subfamily A member 1, in humans. Other names include: Cytochrome P450 1A1; CYPIA1; Cytochrome P450 form 6; Cytochrome P450-C; Cytochrome P450-P1; Cytochrome P450 1A1 ; P1-450; P450-C; P450DX; cytochrome P450, family 1, subfamily A, polypeptide 1. The encoded protein is an enzyme with an amino acid length of 512 and a mass of 58.2 kDa. Other isoforms may exist. This gene shares homology with other species, including: Rat, Frog.