Evaluation of the fluorescent probes Nile Red and 25-NBD-cholesterol as substrates for steroid-converting oxidoreductases using pure enzymes and microorganisms
作者:Yaroslav V. Faletrov、Nina S. Frolova、Hanna V. Hlushko、Elena V. Rudaya、Irina P. Edimecheva、Stephan Mauersberger、Vladimir M. Shkumatov
DOI:10.1111/febs.12265
日期:2013.7
electron-donating partners of CYP17A1. The highest specific activity value (1.30 +/- 0.02 min(-)(1)) was achieved for the strain Y. lipolytica DC5, expressing CYP17A1 and the yeast's NADPH-cytochrome P450 reductase. The dye was also metabolized by pure CYP17A1 into the N-dealkylated derivatives, and gave a type I difference spectrum when titrated into low-spin CYP17A1. Analogously, docking simulations demonstrated
荧光探针尼罗红(非甾体染料)和25- N-[(7-硝基苯-2-氧杂-1,3-二氮杂-4-基)-甲基]氨基} -27-降胆固醇(25-NBD-胆固醇)(胆固醇类似物)被评估为类固醇转化氧化还原酶的新型底物。与自动对接的对接模拟显示,尼罗红非常适合细胞色素P45017α-羟化酶/ 17,20-裂解酶(CYP17A1)的底物结合位点(结合能值为-8.3 kcal.mol(-)(1))。发现均表达CYP17A1的重组酿酒酵母和解脂耶氏酵母可催化尼罗红转化为两个N-去烷基化衍生物。在共表达CYP17A1的给电子伴侣时,酵母的转化率会增加。解脂耶氏酵母DC5菌株获得了最高的比活度值(1.30 +/- 0.02 min(-)(1)),表达CYP17A1和酵母的NADPH-细胞色素P450还原酶。该染料也被纯CYP17A1代谢为N-去烷基化衍生物,滴定为低纺丝CYP17A1时,该染料具有I型差异光谱。类