Identification of new scavengers for hydroxyl radicals and superoxide dismutase by utilising ultraviolet A photoreaction of 8-methoxypsoralen and a variety of mutants of Escherichia coli: Implications on certain diseases of DNA repair deficiency

► UVA photoreaction of 8-methoxypsoralen (PUVA) generates OH and O2-. ► Escherichia coli malate and succinate dehydrogenases can scavenge these radicals. ► Information based on malate and succinate dehydrogenase mutants' sensitivity to PUVA. ► And on the sensitivity of superoxide dismutase and FAPy-DNA glycosylase to PUVA.