##gff-version 3 Q9JVT3 UniProtKB Chain 1 361 . . . ID=PRO_0000210790;Note=Beta-hexosaminidase Q9JVT3 UniProtKB Active site 187 187 . . . Note=Proton donor/acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q9JVT3 UniProtKB Active site 258 258 . . . Note=Nucleophile;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q9JVT3 UniProtKB Binding site 69 69 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q9JVT3 UniProtKB Binding site 77 77 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q9JVT3 UniProtKB Binding site 144 144 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q9JVT3 UniProtKB Binding site 174 175 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q9JVT3 UniProtKB Site 185 185 . . . Note=Important for catalytic activity;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364