##gff-version 3 P48578 UniProtKB Chain 1 313 . . . ID=PRO_0000058855;Note=Serine/threonine-protein phosphatase PP2A-4 catalytic subunit P48578 UniProtKB Active site 122 122 . . . Note=Proton donor;Ontology_term=ECO:0000250;evidence=ECO:0000250 P48578 UniProtKB Binding site 61 61 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P48578 UniProtKB Binding site 63 63 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P48578 UniProtKB Binding site 89 89 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P48578 UniProtKB Binding site 89 89 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P48578 UniProtKB Binding site 121 121 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P48578 UniProtKB Binding site 171 171 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P48578 UniProtKB Binding site 245 245 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P67775 P48578 UniProtKB Modified residue 313 313 . . . Note=Leucine methyl ester;Ontology_term=ECO:0000305;evidence=ECO:0000305|PubMed:28741704;Dbxref=PMID:28741704