##gff-version 3 P43530 UniProtKB Signal peptide 1 18 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250 P43530 UniProtKB Chain 19 258 . . . ID=PRO_0000019352;Note=Heat-labile enterotoxin A chain P43530 UniProtKB Active site 128 128 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250 P43530 UniProtKB Binding site 25 39 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250 P43530 UniProtKB Disulfide bond 205 217 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250 P43530 UniProtKB Sequence conflict 207 207 . . . Note=N->D;Ontology_term=ECO:0000305;evidence=ECO:0000305