Fig. 3.

Chloride dependence of photoassembly yield varies in H₂O and D₂O. (A) Photoassembly was performed in buffers containing H₂O or D₂O for 20 min at 50 μE⋅m⁻²⋅s⁻¹ at variable chloride concentrations. Buffer pL was 6.05. Other conditions were similar to Fig. 2. Photoassembly yield was measured as O₂ evolution rates in H₂O. (B) Ratio of the observed photoassembly yield in H₂O vs. D₂O varies with chloride concentration. Data with error bars represent average values and SE (n = 3 to 6).