##gff-version 3 A4XUX3 UniProtKB Chain 1 462 . . . ID=PRO_0000330539;Note=Siroheme synthase A4XUX3 UniProtKB Region 1 201 . . . Note=Precorrin-2 dehydrogenase /sirohydrochlorin ferrochelatase;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 A4XUX3 UniProtKB Region 214 462 . . . Note=Uroporphyrinogen-III C-methyltransferase;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 A4XUX3 UniProtKB Active site 246 246 . . . Note=Proton acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 A4XUX3 UniProtKB Active site 268 268 . . . Note=Proton donor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 A4XUX3 UniProtKB Binding site 22 23 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 A4XUX3 UniProtKB Binding site 43 44 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 A4XUX3 UniProtKB Binding site 223 223 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 A4XUX3 UniProtKB Binding site 299 301 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 A4XUX3 UniProtKB Binding site 304 304 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 A4XUX3 UniProtKB Binding site 329 330 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 A4XUX3 UniProtKB Binding site 381 381 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 A4XUX3 UniProtKB Binding site 410 410 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646 A4XUX3 UniProtKB Modified residue 126 126 . . . Note=Phosphoserine;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01646