title: Enantioselective inhibition of dichlorprop on catalase.
abstract: The enantioselectivity interaction of 2,4-dichlorprop (DCPP) and catalase were studied, and it was further evaluated with the presence of humus. Both of rac-DCPP and R-DCPP can inhibit the activity of catalase with the concentrations of 0.05-80 mg L(-1), the inhibitory type of rac-DCPP was uncompetitive, and of R-DCPP was complex. The presence of humic acid has changed the inhibitory ability of DCPP on catalase, the inhibition of rac-DCPP disappeared and the inhibition type of R-DCPP mainly became uncompetitive. These results suggest that inhibition of chiral DCPP on catalase is enantioselective.
authors.affiliation: Research Center of Environmental Science, Zhejiang University of Technology, Hangzhou 310032, People's Republic of China. mayun@zjut.edu.cn
authors.forename: Yun
authors.initials: Y
authors.lastname: Ma
authors.forename: Jihong
authors.initials: J
authors.lastname: Jiang
authors.forename: Chao
authors.initials: C
authors.lastname: Xu
authors.forename: Xianting
authors.initials: X
authors.lastname: Lu
mesh_terms: D015084:2,4-Dichlorophenoxyacetic Acid / Q000031:analogs & derivatives* / Q000633:toxicity; D002374:Catalase / Q000037:antagonists & inhibitors / Q000378:metabolism*; D015870:Gene Expression / Q000187:drug effects; D006540:Herbicides / Q000633:toxicity*; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000633:toxicity; D013237:Stereoisomerism
chemical_list: D006540:Herbicides; D012987:Soil; D012989:Soil Pollutants; D015084:2,4-Dichlorophenoxyacetic Acid; D002374:Catalase; C010571:dichlorprop