##gff-version 3 Q87BR5 UniProtKB Chain 1 335 . . . ID=PRO_0000210805;Note=Beta-hexosaminidase Q87BR5 UniProtKB Active site 176 176 . . . Note=Proton donor/acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q87BR5 UniProtKB Active site 247 247 . . . Note=Nucleophile;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q87BR5 UniProtKB Binding site 60 60 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q87BR5 UniProtKB Binding site 68 68 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q87BR5 UniProtKB Binding site 133 133 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q87BR5 UniProtKB Binding site 163 164 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q87BR5 UniProtKB Site 174 174 . . . Note=Important for catalytic activity;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364