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. 2014 Nov 11;9(11):e112649. doi: 10.1371/journal.pone.0112649

Figure 1. The standard model for the action of the GAD system.

Figure 1

(a) A membrane bound antiporter carries glutamate into the cell in exchange for GABA. A cytosolic decarboxylase enzyme converts glutamate to GABA, with a consumption of H+. (b) The genomic structure of the genes encoding the GAD system in L. monocytogenes EGD-e.