FIG 2.

Photoheterotrophic growth of Rhodobacter sphaeroides wild-type strain 2.4.1 (WT), the EMC pathway-disrupted strain (Δccr mutant), and the ccr-complemented strain [Δccr(pMGccr) mutant] with acetate and NH₄Cl under an N₂ atmosphere. (A) Growth. (B) Acetate consumption. Each value represents the mean ± standard deviation of the results from at least three independent cultures; error bars that are not visible are smaller than the symbol. Black circle, WT; black square, Δccr mutant; open triangle, Δccr(pMGccr) mutant.