Recent advances and future prospective of organophosphorus-degrading enzymes: identification, modification, and application
2021
Xu, Wei | Zhao, Sumao | Zhang, Wenli | Wu, Hao | Guang, Cuie | Mu, Wanmeng
The organophosphorus-based OPs) nerve agents and pesticides have been applied in the agriculture industry for a long time. However, they were found to have a persistent effect on the environment and threaten human health. Traditional methods, including incineration and landfilling, could not thoroughly remove these organophosphorus compounds (OPs). Meanwhile, chemical hydrolysis for decontamination was also inhibited due to the presence of corrosive materials and high costs. Biological remediation for OPs employing microorganisms and organophosphorus-degrading enzymes is promising due to a mild and controllable procedure, environmental-friendly reactions, and high efficacy. A wide variety of enzymes have shown latent ability in degrading OPs hazards like organophosphorus hydrolase (OPH), organophosphorus acid anhydrolase (OPAA), the diisopropylfluorophosphatase (DFPase), and mammalian paraoxonase 1 (PON 1). To this end, increasing efforts have been made on these intriguing enzymes to increase their expression level, enhance the catalytic activity, modify the optimal substrate, and expand the practical application. In this review, the enzyme resource, crystal structure, molecular modification, and industry application were compared and discussed in detail. Moreover, the proposed ideas and positive results could be useful for the other relevant OPs-degrading enzymes.
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