##gff-version 3 P97355 UniProtKB Initiator methionine 1 1 . . . Note=Removed;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P52788 P97355 UniProtKB Chain 2 366 . . . ID=PRO_0000156539;Note=Spermine synthase P97355 UniProtKB Domain 122 362 . . . Note=PABS;Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00354 P97355 UniProtKB Active site 276 276 . . . Note=Proton acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00354 P97355 UniProtKB Binding site 148 148 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P52788 P97355 UniProtKB Binding site 177 177 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P52788 P97355 UniProtKB Binding site 201 201 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P52788 P97355 UniProtKB Binding site 220 220 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P52788 P97355 UniProtKB Binding site 255 256 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P52788 P97355 UniProtKB Binding site 351 351 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P52788 P97355 UniProtKB Binding site 353 353 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P52788 P97355 UniProtKB Modified residue 2 2 . . . Note=N-acetylalanine;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P52788 P97355 UniProtKB Modified residue 57 57 . . . Note=Phosphoserine;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P52788 P97355 UniProtKB Sequence conflict 188 188 . . . Note=D->H;Ontology_term=ECO:0000305;evidence=ECO:0000305 P97355 UniProtKB Sequence conflict 245 245 . . . Note=R->K;Ontology_term=ECO:0000305;evidence=ECO:0000305