Fig. 4.
H2 dose–response of ∆5H2ase mutant. Clear bars, mineral medium; checkered bars, 10 mM acetate added; solid bars, 10 mM acetate and casamino acids (0.2% wt/vol) added. All cultures contained 200 mM formate. Five-milliliter cultures were incubated until stationary phase and OD660 was measured.