Enantioselective Inhibition of Dichlorprop on Catalase
Enantioselective Inhibition of Dichlorprop on Catalase
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DOI：
10.1007/s00128-012-0815-4
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发表时间：
2012-09
影响因子：
2.7
通讯作者：
Yun Ma;Jihong Jiang;Chao Xu;Xianting Lu
中科院分区：
文献类型：
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作者：
Yun Ma;Jihong Jiang;Chao Xu;Xianting Lu
研究了2，4-二氯丙酸（DCPP）与过氧化氢酶的对映体选择性相互作用，并在腐殖酸存在下对其进行了评价。在0.05 ~ 80 mg L-1浓度范围内，rac-DCPP和R-DCPP均能抑制过氧化氢酶的活性，rac-DCPP的抑制类型为非竞争性，R-DCPP的抑制类型为复合性。腐殖酸的存在改变了DCPP对过氧化氢酶的抑制能力，rac-DCPP的抑制作用消失，R-DCPP的抑制类型主要变为非竞争性。这些结果表明，手性DCPP对过氧化氢酶的抑制是对映选择性的。
The enantioselectivity interaction of 2,4-dichlorprop (DCPP) and catalase were studied, and it was further evaluated with the presence of humus. Both ofrac-DCPP andR-DCPP can inhibit the activity of catalase with the concentrations of 0.05–80 mg L−1, the inhibitory type ofrac-DCPP was uncompetitive, and ofR-DCPP was complex. The presence of humic acid has changed the inhibitory ability of DCPP on catalase, the inhibition ofrac-DCPP disappeared and the inhibition type ofR-DCPP mainly became uncompetitive. These results suggest that inhibition of chiral DCPP on catalase is enantioselective.