L-GLUTAMIC ACID DECARBOXYLASE L-GLUTAMIC DECARBOXYLASE L-glutamic acid decarboxylase from clos-tridium perfringens L-glutamic acid decarboxylase from E. coli L-glutamic decarboxylase from*escherichia coli Decarboxylase, glutamate L-GLUTAMIC DECARBOXYLASE TYPE I L-GLUTAMIC DECARBOXYLASE TYPE III