##gff-version 3 Q1H075 UniProtKB Chain 1 349 . . . ID=PRO_1000005656;Note=Beta-hexosaminidase Q1H075 UniProtKB Active site 181 181 . . . Note=Proton donor/acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q1H075 UniProtKB Active site 252 252 . . . Note=Nucleophile;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q1H075 UniProtKB Binding site 64 64 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q1H075 UniProtKB Binding site 72 72 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q1H075 UniProtKB Binding site 138 138 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q1H075 UniProtKB Binding site 168 169 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q1H075 UniProtKB Site 179 179 . . . Note=Important for catalytic activity;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364