TABLE 4.

Cytochrome content of WT, ΔclsA, and ΔclsA/B/C strains

Cells were grown to logarithmic phase on MYE medium at pH 10.5, and assayed as described under “Experimental Procedures.” The values are averages ± S.D. from at least two independent determinations.

	Cytochrome content
	Cytochrome aa3	Cytochrome b nmol/mg of protein	Cytochrome c
WT	0.1 ± 0.016	0.29 ± 0.01	0.57 ± 0.06
ΔclsA	0.092 ± 0.023	0.29 ± 0.03	0.50 ± 0.08
ΔclsA/B/C	0.097 ± 0.016	0.26 ± 0.01	0.47 ± 0.08