##gff-version 3 Q54RD6 UniProtKB Chain 1 312 . . . ID=PRO_0000368207;Note=Protein phosphatase 2A catalytic subunit B Q54RD6 UniProtKB Active site 116 116 . . . Note=Proton donor;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P36873 Q54RD6 UniProtKB Binding site 55 55 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P36873 Q54RD6 UniProtKB Binding site 57 57 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P36873 Q54RD6 UniProtKB Binding site 83 83 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P36873 Q54RD6 UniProtKB Binding site 83 83 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P36873 Q54RD6 UniProtKB Binding site 115 115 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P36873 Q54RD6 UniProtKB Binding site 165 165 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P36873 Q54RD6 UniProtKB Binding site 240 240 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P36873