Catalase and superoxiddismutase activities in Desulfovibrio desulfuricans Ya-11 under the influence of heavy metals salts

Abstract

The highest catalase activity (42.67×10–2 µM×min–1×mg–1 of protein) in the cells of Desulfovibrio desulfuricans Ya-11 has been observed under the prolonged Pb(NO3)2 influence. In the presence of other heavy metals’ salts it has been changed in dependence on their concentrations and growth duration. Based on our research data the row of heavy metals’ salts by its influence on D. desulfuricans Ya-11 catalase activity has been formed at first: Pb(NO3)2> CuCl2> CdCl2> ZnCl2. The highest superoxide dismutase activity (61.52×10–2 µM×min–1×mg–1 of protein) has been observed under the prolonged ZnCl2 influence. In the presence of other heavy metals’ salts this enzyme’s activity increased with increasing the salts’ concentrations. Based on our According to our results, the row of heavy metals’ salts influence on D. desulfuricans Ya-11 superoxide dismutase activity has been formed at first: ZnCl2 > Pb(NO3)2 > CuCl2 > CdCl2.