Table 4.

Analysis of MerA-like activity of Synechocystis cell extracts prepared from the WT strain and the Grx1 null mutant^a

^aThe activity of the Synechocystis MerA-like enzyme was measured as the consumption of NADPH (nmol · min⁻¹ · mg⁻¹ of protein) that reduces mercuric or uranyl ions. The values given are percentages of the highest activity monitored in the presence of DTT to fully reduce MerA, which was taken as 100%. The numbers are the mean values ± standard deviations from four assays (two measurements performed on two independent enzyme extracts).