Inhibition or activation of Pseudomonas species lipase by 1,2-ethylene-di-N-alkylcarbamates in detergents
作者:Ming-Cheng Lin、Chun-Ping Lu、Yu-Ru Cheng、Yan-Fu Lin、Chung-Sheng Lin、Gialih Lin
DOI:10.1016/j.chemphyslip.2006.12.005
日期:2007.4
activator of Pseudomonas species lipase while 1,2-ethylene-di-N-n-butyl-, t-butyl-, n-heptyl-, and n-octyl-carbamates (2-5) are characterized as the pseudo substrate inhibitors of the enzyme in the presence of the detergent taurocholate or triton X-100. The inhibition and activation reactions are more sensitive in taurocholate than in triton X-100. From CD studies, the enzyme changes conformations in the
1,2-乙烯-二-Nn-丙基氨基甲酸酯(1)被表征为假单胞菌脂肪酶的必需活化剂,而1,2-乙烯-二-Nn-丁基,叔丁基,正庚基和n在洗涤剂taurocholate或triton X-100存在下,辛基氨基甲酸酯(2-5)的特征是酶的假底物抑制剂。牛磺胆酸盐中的抑制和活化反应比triton X-100更敏感。根据CD研究,酶在去污剂存在下会改变构象,并通过将氨基甲酸酯活化剂或抑制剂添加到酶洗涤剂加合物中来进一步改变构象。因此,这项研究表明界面活化过程中脂肪酶的构象变化是一个连续的过程,将酶的活性位点暴露于底物。根据600 MHz(1)H NMR研究,