##gff-version 3 P48982 UniProtKB Signal peptide 1 21 . . . Ontology_term=ECO:0000269;evidence=ECO:0000269|PubMed:8563148;Dbxref=PMID:8563148 P48982 UniProtKB Chain 22 598 . . . ID=PRO_0000012198;Note=Beta-galactosidase P48982 UniProtKB Active site 184 184 . . . Note=Proton donor;Ontology_term=ECO:0000255;evidence=ECO:0000255 P48982 UniProtKB Active site 260 260 . . . Note=Nucleophile;Ontology_term=ECO:0000255;evidence=ECO:0000255