cytochrome p450 eryf cytochrome p450 eryf 6-deoxyerythronolide b hydroxylase is an actinomycetota cytochrome p450 enzyme originally from saccharopolyspora erythraea, catalyzes the 6s-hydroxylate of 6-deoxyerythronolide b (6-deb) to erythronolide b (eb) which is the first step of biosynthesis of the macrolide antibiotic erythromycin. this bacterial enzyme belongs to cyp family cyp107, with the cyp symbol cyp107a1. cytochrome p450 eryfidentifiersorganismsaccharopolyspora erythraeasymboleryfalt. symbolscyp107a1uniprotq00441other dataec number1.14.15.35search forstructuresswiss-modeldomainsinterpro