##gff-version 3 Q55749 UniProtKB Chain 1 263 . . . ID=PRO_0000150375;Note=Uroporphyrinogen-III C-methyltransferase Q55749 UniProtKB Binding site 20 20 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P21631 Q55749 UniProtKB Binding site 96 98 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P21631 Q55749 UniProtKB Binding site 126 127 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P21631 Q55749 UniProtKB Binding site 180 180 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P21631 Q55749 UniProtKB Binding site 237 237 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P21631