##gff-version 3 Q4ZRL6 UniProtKB Chain 1 464 . . . ID=PRO_0000330544;Note=Siroheme synthase Q4ZRL6 UniProtKB Region 1 203 . . . Note=Precorrin-2 dehydrogenase /sirohydrochlorin ferrochelatase;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q4ZRL6 UniProtKB Region 216 464 . . . Note=Uroporphyrinogen-III C-methyltransferase;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q4ZRL6 UniProtKB Active site 248 248 . . . Note=Proton acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q4ZRL6 UniProtKB Active site 270 270 . . . Note=Proton donor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q4ZRL6 UniProtKB Binding site 22 23 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q4ZRL6 UniProtKB Binding site 43 44 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q4ZRL6 UniProtKB Binding site 225 225 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q4ZRL6 UniProtKB Binding site 301 303 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q4ZRL6 UniProtKB Binding site 306 306 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q4ZRL6 UniProtKB Binding site 331 332 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q4ZRL6 UniProtKB Binding site 383 383 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q4ZRL6 UniProtKB Binding site 412 412 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q4ZRL6 UniProtKB Modified residue 128 128 . . . Note=Phosphoserine;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646