##gff-version 3 P67774 UniProtKB Chain 1 309 . . . ID=PRO_0000058838;Note=Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform P67774 UniProtKB Active site 118 118 . . . Note=Proton donor;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P36873 P67774 UniProtKB Binding site 57 57 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P67774 UniProtKB Binding site 59 59 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P67774 UniProtKB Binding site 85 85 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P67774 UniProtKB Binding site 85 85 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P67774 UniProtKB Binding site 117 117 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P67774 UniProtKB Binding site 167 167 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P67774 UniProtKB Binding site 241 241 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P67774 UniProtKB Modified residue 307 307 . . . Note=Phosphotyrosine;Ontology_term=ECO:0000269;evidence=ECO:0000269|PubMed:7681598;Dbxref=PMID:7681598 P67774 UniProtKB Modified residue 309 309 . . . Note=Leucine methyl ester;Ontology_term=ECO:0000269;evidence=ECO:0000269|PubMed:8396127;Dbxref=PMID:8396127