TABLE 2.

Distribution of fluxes through the various metabolic routes involved in 20 mM GABA utilization by the V5 and V5 uga2 strains

Metabolic routea	Value observed for strain:
	V5	V5 uga2
Initial GABA	100	100
GABA uptake*	66.0 ± 1.4	45.5 ± 1.9
GABA → storage*	13.5 ± 0.7	29 ± 0.8
GABA → excreted succinate*	41 ± 1.5
GABA → excreted GHB*	NDc	10.5 ± 0.5
GABA → PHB*b	11.5 ± 3.6	6 ± 3.2

^a*, values are expressed as a percentage of the initial GABA concentration (20 mM).

^bCalculated from the other experimental values.

^cND, not detected.