##gff-version 3 Q9XZE5 UniProtKB Chain 1 306 . . . ID=PRO_0000368206;Note=Serine/threonine-protein phosphatase 2A catalytic subunit A Q9XZE5 UniProtKB Active site 115 115 . . . Note=Proton donor;Ontology_term=ECO:0000250;evidence=ECO:0000250 Q9XZE5 UniProtKB Binding site 54 54 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250 Q9XZE5 UniProtKB Binding site 56 56 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250 Q9XZE5 UniProtKB Binding site 82 82 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250 Q9XZE5 UniProtKB Binding site 82 82 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250 Q9XZE5 UniProtKB Binding site 114 114 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250 Q9XZE5 UniProtKB Binding site 164 164 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250 Q9XZE5 UniProtKB Binding site 238 238 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250 Q9XZE5 UniProtKB Modified residue 306 306 . . . Note=Leucine methyl ester;Ontology_term=ECO:0000250;evidence=ECO:0000250