##gff-version 3 Q45726 UniProtKB Signal peptide 1 28 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255 Q45726 UniProtKB Chain 29 309 . . . ID=PRO_0000016976;Note=Beta-lactamase Q45726 UniProtKB Active site 92 92 . . . Note=Acyl-ester intermediate;Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU10101 Q45726 UniProtKB Active site 188 188 . . . Note=Proton acceptor;Ontology_term=ECO:0000250;evidence=ECO:0000250 Q45726 UniProtKB Binding site 254 256 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250