##gff-version 3 P85973 UniProtKB Chain 1 289 . . . ID=PRO_0000349126;Note=Purine nucleoside phosphorylase P85973 UniProtKB Binding site 33 33 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P85973 UniProtKB Binding site 64 64 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P85973 UniProtKB Binding site 84 86 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P85973 UniProtKB Binding site 88 88 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P85973 UniProtKB Binding site 116 116 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P85973 UniProtKB Binding site 201 201 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P85973 UniProtKB Binding site 219 219 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P85973 UniProtKB Binding site 220 220 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P85973 UniProtKB Binding site 243 243 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P85973 UniProtKB Binding site 257 257 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P85973 UniProtKB Site 243 243 . . . Note=Important for substrate specificity;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P00491 P85973 UniProtKB Modified residue 1 1 . . . Note=N-acetylmethionine;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P00491