Figure 6: Cleavage of pBR322 DNA by complex 1 (15-60 μM) in the absence and presence of H2O2 (30 mM) in buffer B (pH 7.2). lane 1, DNA control; lane 2, DNA + H2O2; lane 3, DNA + 1 (15 μM) + H2O2; lane 4, DNA + 1 (30 μM) + H2O2; lane 5, DNA + 1 (60 μM) + H2O2; lane 6, DNA + 1 (30 μM) + H2O2+ L-Histidine (0.02 M); lane 7, DNA + 1 (30 μM) + H2O2+ DMSO (2 μL).