Table 1.

Doubling times and cell yield coefficients of WT D. gigas and ΔechBC and ΔhynAB hydrogenase mutant strains during growth under different conditions

Growth condition	Doubling time (h)			YS (g [dry wt] cells/mol)
	WT	ΔechBC mutant	ΔhynAB mutant	WT	ΔechBC mutant	ΔhynAB mutant
Lactate-sulfate	8.7	11.1	9.0	6.8	7.2	6.8
Pyruvate-sulfatea	6.7	6.7	7.9	6.0	7.3	6.1
Pyruvate-sulfateb	6.9	7.1	8.0	5.2	6.3	4.7
Pyruvate	14.2	16.7		4.8	6.7
H2-sulfate	33.3	24.1

^aPyruvate-sulfate (40 mM–40 mM).

^bPyruvate-limiting sulfate (40 mM–5 mM).