##gff-version 3 P23492 UniProtKB Chain 1 289 . . . ID=PRO_0000184537;Note=Purine nucleoside phosphorylase P23492 UniProtKB Binding site 33 33 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P23492 UniProtKB Binding site 64 64 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P23492 UniProtKB Binding site 84 86 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P23492 UniProtKB Binding site 88 88 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P23492 UniProtKB Binding site 116 116 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P23492 UniProtKB Binding site 201 201 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P23492 UniProtKB Binding site 219 219 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P23492 UniProtKB Binding site 220 220 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P23492 UniProtKB Binding site 243 243 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P23492 UniProtKB Binding site 257 257 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P55859 P23492 UniProtKB Site 243 243 . . . Note=Important for substrate specificity;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P00491 P23492 UniProtKB Modified residue 1 1 . . . Note=N-acetylmethionine;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P00491 P23492 UniProtKB Natural variant 22 22 . . . Note=In haplotype NPD. E->K P23492 UniProtKB Natural variant 39 39 . . . Note=In haplotype NPD. T->A P23492 UniProtKB Natural variant 152 152 . . . Note=In haplotype NPD. D->E P23492 UniProtKB Natural variant 176 176 . . . Note=In haplotype NPB. T->S P23492 UniProtKB Natural variant 258 258 . . . Note=In haplotype NPC. M->K