1.14.19.69 4 flaviolin + 4 reduced ferredoxin [iron-sulfur] cluster + 4 H+ + O2 CYP158A2 produces three isomers of biflaviolin and one triflaviolin 1.14.19.69 4 flaviolin + 4 reduced ferredoxin [iron-sulfur] cluster + 4 H+ + O2 isoform CYP158A1 can only produce 3,3'-biflaviolin and 3,8'-biflaviolin with quite different molar ratios compared with the products from CYP158A2