##gff-version 3 D4QFE7 UniProtKB Chain 1 689 . . . ID=PRO_0000407684;Note=Beta-galactosidase BbgII D4QFE7 UniProtKB Active site 161 161 . . . Note=Proton donor;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O69315 D4QFE7 UniProtKB Active site 320 320 . . . Note=Nucleophile;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O69315 D4QFE7 UniProtKB Binding site 122 122 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O69315 D4QFE7 UniProtKB Binding site 160 160 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O69315 D4QFE7 UniProtKB Binding site 328 328 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O69315 D4QFE7 UniProtKB Binding site 368 371 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O69315