TABLE 3.

Spectral complex and Crt composition of R. sphaeroides 2.4.1 grown under high-light photosynthetic conditions

Straina	Amt (nmol/mg of protein)b			SO:SE
	B800-850	B875	Crt
2.4.1	2.97 ± 0.26	4.19 ± 0.78	81.8 ± 10.6	1.16
CCOP1	2.35 ± 0.26	3.25 ± 0.29	66.0 ± 8.0	35.70
PRRB1	0.19 ± 0.02	1.88 ± 0.24	43.0 ± 1.8	0.84
CCOP1PRRB1	0.24 ± 0.07	1.91 ± 0.33	33.0 ± 2.8	2.56

^aStrains were grown at high light intensity (60 W/m²), with sparging with 98% N₂–2% CO₂, to an OD₆₀₀ of 0.1 to 0.2. 

^bThe levels of B800-850 and B875 spectral complexes were determined as described previously (17). Values are the averages of at least two independent determinations, and standard deviations from the mean are provided.