##gff-version 3 Q2KXM7 UniProtKB Chain 1 350 . . . ID=PRO_0000234911;Note=Beta-hexosaminidase Q2KXM7 UniProtKB Active site 191 191 . . . Note=Proton donor/acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q2KXM7 UniProtKB Active site 262 262 . . . Note=Nucleophile;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q2KXM7 UniProtKB Binding site 73 73 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q2KXM7 UniProtKB Binding site 81 81 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q2KXM7 UniProtKB Binding site 148 148 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q2KXM7 UniProtKB Binding site 178 179 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q2KXM7 UniProtKB Site 189 189 . . . Note=Important for catalytic activity;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364