TABLE 4.

GADH activity in membrane fractions of mutant strains

Membrane	Ferricyanide reductase activity (U/mg of protein)a
	GA	Glycerol	d-Arabitol	d-Sorbitol
Wild type	0.71 ± 0.13	0.55 ± 0.05	0.37 ± 0.08	0.41 ± 0.10
gndL::Km mutant	0.44 ± 0.18	0.51 ± 0.10	0.34 ± 0.09	0.38 ± 0.09
sldA::Km mutant	0.77 ± 0.10	ND	ND	ND
gndL::Tc sldA::Km mutant	0.56 ± 0.12	ND	ND	ND

^aND, not detected. Data were obtained from three independent experiments.