上游充通大学 Cholesterol SHANGHAI JIAO TONG UNIVERSITY Cholesterol(胆固醇)is a steroid(甾体)，built from four linked hydrocarbon rings. CH3 CH3 Cholesterol In membranes,the orientation of the molecule is parallel to the fatty acid chains of the phospholipids,and the hydroxyl group interacts with the nearby phospholipid head groups. 胆固醇也有疏水和亲水部分，与磷脂平行排列。 Cholesterol is absent from prokaryotes but is found to varying degrees in virtually all animal membranes. 胆固醇在原核生物中不存在，但广泛存在于动物的质膜中。Cholesterol (胆固醇) is a steroid (甾体), built from four linked hydrocarbon rings. Cholesterol In membranes, the orientation of the molecule is parallel to the fatty acid chains of the phospholipids, and the hydroxyl group interacts with the nearby phospholipid head groups. 胆固醇也有疏水和亲水部分，与磷脂平行排列。 Cholesterol is absent from prokaryotes but is found to varying degrees in virtually all animal membranes. 胆固醇在原核生物中不存在，但广泛存在于动物的质膜中