glutamate decarboxylase activity https://github.com/geneontology/go-ontology/issues/30193 L-glutamic acid decarboxylase activity EC:4.1.1.15 molecular_function MetaCyc:GLUTDECARBOX-RXN cysteic acid decarboxylase activity Catalysis of the reaction: L-glutamate = 4-aminobutanoate + CO2. GO:0004351 L-glutamate 1-carboxy-lyase activity L-glutamic decarboxylase activity L-glutamate 1-carboxy-lyase (4-aminobutanoate-forming) Reactome:R-HSA-888572 RHEA:17785 Reactome:R-HSA-888577 aspartic alpha-decarboxylase gamma-glutamate decarboxylase activity L-glutamate alpha-decarboxylase activity L-aspartate-alpha-decarboxylase activity carboxy-lyase activity