Figure 1. Accumulation of sulfur and formation of sulfate by different A. vinosum strains.

Panel A shows accumulation of sulfur, in panel B formation of sulfate is depicted. Cells of A. vinosum wild type (•), A. vinosum ΔdsrE+dsrE₇₈FH (□), A. vinosum ΔdsrE+dsrEFH₂₀ (Δ) and A. vinosum ΔdsrE+dsrE₇₈FH₂₀ (◊) were grown photolithoautotrophically with 2 mM sulfide as sole electron source. Discrepancy of sulfate and initially supplied sulfide is due to loss of gaseous sulfide. Protein concentrations increased from approximately 90 to 140 µg/ml in all cultures.