Enables steroid hydroxylase activity. Involved in coumarin metabolic process. Located in intracellular membrane-bounded organelle. Human ortholog(s) of this gene implicated in nicotine dependence and warfarin resistance. Orthologous to human CYP2A13 (cytochrome P450 family 2 subfamily A member 13); CYP2A6 (cytochrome P450 family 2 subfamily A member 6); and CYP2A7 (cytochrome P450 family 2 subfamily A member 7). [provided by Alliance of Genome Resources, Apr 2022]