##gff-version 3 Q51429 UniProtKB Signal peptide 1 21 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250 Q51429 UniProtKB Chain 22 275 . . . ID=PRO_0000017027;Note=Beta-lactamase OXA-3 Q51429 UniProtKB Active site 72 72 . . . Note=Acyl-ester intermediate;Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU10103 Q51429 UniProtKB Binding site 210 212 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250 Q51429 UniProtKB Modified residue 75 75 . . . Note=N6-carboxylysine;Ontology_term=ECO:0000250;evidence=ECO:0000250