›› 2004, Vol. 47 ›› Issue (6): 744-748.

• 研究论文 • 上一篇    下一篇

四种去垢剂对棉铃虫微粒体细胞色素P450的增溶与变性作用

郑明奇1,2, 张文吉1, 邱星辉2*, 冷欣夫2, 何凤琴2, 李梅2   

  • 出版日期:2004-12-20 发布日期:2004-12-20

Effects of four detergents on solubilization and denaturation of microsomal cytochrome P450s in Helicoverpa armigera

ZHENG Ming-Qi1,2,ZHANG Wen-Ji1, QIU Xing-Hui2*, LENG Xin-Fu2, HE Feng-Qin2, LI Mei2   

  • Online:2004-12-20 Published:2004-12-20

摘要: 为分离纯化棉铃虫的细胞色素P450,比较了4种去垢剂对棉铃虫微粒体P450的增溶与变性作用。结果表明:CHAPS (3-[(3-cholamidopropyl)- dimethylammonio]-1-propanesulfonate)能有效地增溶中肠和脂肪体微粒体P450,而Lubrol PX(聚氧乙烯十二烷基乙醇醚)、Emulgen 911(聚氧乙烯壬基苯酚醚)和胆酸钠的增溶效果较差;CHAPS对中肠和脂肪体微粒体P450的最适增溶浓度分别为0.5%和0.5%~0.8%; 终浓度为0.5%时, 4种去垢剂对中肠和脂肪体微粒体P450的变性作用不明显。

关键词: 棉铃虫, 细胞色素P450, 去垢剂, 增溶作用, 变性作用

Abstract: To facilitate the separation and purification of cytochrome P450s in the cotton bollworm, Helicoverpa armigera, the effects of 4 detergents on the solubilization and denaturation of microsomal P450s from this pest were examined. The results showed that CHAPS efficiently solubilized the microsomal P450 of midgut and fatbody, while Lubrol PX, Emulgen 911 and sodium cholate were less efficient. The suitable solubilization concentrations of CHAPS for microsomal P450s of midgut and fatbody were 0.5% and 0.5%-0.8% respec tively. Denaturation effects of CHAPS, Lubrol PX, Emulgen 911 and sodium cholat eat the concentration 0.5% on microsomal cytochrome P450s of midgut and fatbody were insignificant.

Key words: Helicoverpa armigera, cytochrome P450, detergent, solubilization, denaturation