oxaloacetate decarboxylase activity https://github.com/geneontology/go-ontology/issues/28245 oxalacetic acid decarboxylase activity oxaloacetate carboxy-lyase (pyruvate-forming) EC:4.1.1.112 KEGG_REACTION:R00217 RHEA:15641 oxalate beta-decarboxylase activity Reactome:R-HSA-9861660 MetaCyc:OXALODECARB-RXN GO:0008948 oxaloacetate beta-decarboxylase activity molecular_function Reactome:R-HSA-9012016 Catalysis of the reaction: H+ + oxaloacetate = CO2 + pyruvate. oxaloacetate carboxy-lyase activity carboxy-lyase activity