##gff-version 3 A0KXK3 UniProtKB Chain 1 342 . . . ID=PRO_1000005662;Note=Beta-hexosaminidase A0KXK3 UniProtKB Active site 177 177 . . . Note=Proton donor/acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 A0KXK3 UniProtKB Active site 249 249 . . . Note=Nucleophile;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 A0KXK3 UniProtKB Binding site 61 61 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 A0KXK3 UniProtKB Binding site 69 69 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 A0KXK3 UniProtKB Binding site 134 134 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 A0KXK3 UniProtKB Binding site 164 165 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 A0KXK3 UniProtKB Site 175 175 . . . Note=Important for catalytic activity;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364