Cytochrome P450-DIT2 or CYP56A1 is one of the only three P450 enzyme found in fungi baker's yeast (Saccharomyces cerevisiae), the other two are CYP51F1(ERG11) and CYP61A1(ERG5) in the ergosterol biosynthesis pathway.[1] CYP56A1 thought to catalyze the oxidation of tyrosine residues in the formation of L,L-dityrosine, a precursor of the spore wall.[2]