##gff-version 3 Q3ILQ9 UniProtKB Chain 1 473 . . . ID=PRO_0000330532;Note=Siroheme synthase Q3ILQ9 UniProtKB Region 1 203 . . . Note=Precorrin-2 dehydrogenase /sirohydrochlorin ferrochelatase;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q3ILQ9 UniProtKB Region 215 473 . . . Note=Uroporphyrinogen-III C-methyltransferase;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q3ILQ9 UniProtKB Active site 247 247 . . . Note=Proton acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q3ILQ9 UniProtKB Active site 269 269 . . . Note=Proton donor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q3ILQ9 UniProtKB Binding site 22 23 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q3ILQ9 UniProtKB Binding site 43 44 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q3ILQ9 UniProtKB Binding site 224 224 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q3ILQ9 UniProtKB Binding site 300 302 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q3ILQ9 UniProtKB Binding site 305 305 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q3ILQ9 UniProtKB Binding site 330 331 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q3ILQ9 UniProtKB Binding site 382 382 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q3ILQ9 UniProtKB Binding site 411 411 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 Q3ILQ9 UniProtKB Modified residue 128 128 . . . Note=Phosphoserine;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646