Table 4. Partition of Glutamate decarboxylase (GadA/B) activity* in the cytosolic (Cyto) and membrane (Mem) fractions from stationary phase cellular extract brought to pH 7.4 or 5.6.

	pH 7.4		pH 5.6
	Cyto	Mem	Cyto	Mem
MC4100	265 ± 21	75 ± 6	146 ± 11	124 ± 9
MC4100ΔyhiM	275 ± 23	56 ± 4	190 ± 8	143 ± 5

* the activity is reported in Units/mg.