TABLE 2.

Levels of spectral complexes and photopigments in R. sphaeroides strains grown under aerobic conditions^a

Strain	Spectral complexes (nmol/mg of protein)		Photopigments (μg/mg of protein)
	B800-850	B875	Bchl	Crt
2.4.1	0.1 ± 0.0	<0.05	<0.05	0.4 ± 0.1
CCOP1	0.4 ± 0.1	4.5 ± 0.2	1.3 ± 0.2	1.0 ± 0.1
FNRL	0.1 ± 0.0	<0.05	<0.05	0.4 ± 0.1
CCOP1FNRL	0.2 ± 0.0	2.9 ± 0.2	0.9 ± 0.1	0.8 ± 0.2

^aStrains were grown aerobically by sparging with 30% O₂–69% N₂–1% CO₂ to an OD₆₀₀ of 0.4 to 0.5. All values are the averages of two independent determinations.