##gff-version 3 Q9PT26 UniProtKB Propeptide 1 18 . . . ID=PRO_0000026635;Note=Removed in mature form;Ontology_term=ECO:0000250;evidence=ECO:0000250 Q9PT26 UniProtKB Chain 19 217 . . . ID=PRO_0000026636;Note=Proteasome subunit beta type-9 Q9PT26 UniProtKB Active site 19 19 . . . Note=Nucleophile;Ontology_term=ECO:0000250;evidence=ECO:0000250 Q9PT26 UniProtKB Site 18 19 . . . Note=Cleavage%3B by autolysis;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O35955