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Updated: Aug 6, 2026

Bioprospecting of Extremophilic Microorganisms to Address Environmental Pollution
Published on: December 30, 2021
[Characterization of enzymatic degradation of microcystins by a new isolated bacterium]
Hong-sheng He1, Hai Yan, Jie Zhou
1Department of Biological Science and Technology, School of Applied Science, University of Science and Technology Beijing, China. hhsheng00@163.com
Abstract:
A strain of bacterium capable of biodegrading microcystin (MC) RR and MC-LR was isolated from the sediments of Dianchi Lake. It was demonstrated that the enzymes in cell-free extract of this bacterium were responsible for the degradation of MC-RR and MC-LR, and the dead-end products of MC-RR and MC-LR catalyzed by these enzymes were observed on HPLC chromatograms. Results show that the optimum pH for the activities of these enzymes was in the range from 6.0 to 8.0, however the metal ions of Cu2+, Mn2+ and Zn2+ had no apparent effects on the enzymatic degradation of MC-RR and MC-LR.
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