##gff-version 3 O73853 UniProtKB Chain 1 514 . . . ID=PRO_0000051945;Note=Steroid 17-alpha-hydroxylase/17%2C20 lyase O73853 UniProtKB Binding site 445 445 . . . Note=Axial binding residue;Ontology_term=ECO:0000250;evidence=ECO:0000250