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The use of proteinases to determine the topological location of cytochrome P-450 in vesicles derived from smooth endoplasmic reticulum of rat liver

机译:使用蛋白酶以确定细胞色素p-450在大鼠肝脏光滑内质网的囊泡中的细胞色素p-450的拓扑位置

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p1. The phospholipid bilayer of intact vesicles from smooth endoplasmic reticulum is impermeable to macromolecules. Specific and non-specific proteinases were used to investigate the site of membrane proteins in the transverse plane of the bilayer. 2. When two proteinases were used in conjunction, denaturing effects additional to proteolysis were observed on cytochrome P-450 content and glucose 6-phosphatase activity which did not depend on the integrity of the phospholipid bilayer. 3. When lipid peroxidation was inhibited, these effects were not observed./p
机译:> 1。来自光滑的内质网的完整囊泡的磷脂双层是不可渗透的大分子。使用特异性和非特异性蛋白酶来研究双层横向平面中的膜蛋白位点。 2.当结合使用两种蛋白酶时,在细胞色素P-450含量和葡萄糖6-磷酸酶活性上观察到蛋白水解的变性效果,其不依赖于磷脂双层的完整性。 3.当抑制脂质过氧化时,未观察到这些效果。

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