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vegetation
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Phosphatide commute white
磷脂交换蛋白
(phospholipid exchang proteins, pep)
pep是一种水溶性的载体蛋白,可以在不同的膜结合细胞器之间转移磷脂。转移的过程是: pep首先与磷脂分子结合, 形成水溶性的复合物进入细胞质基质中, 通过自由扩散, 直至遇上其它的膜时, pep将磷脂释放出来,并插在膜上,结果使磷脂从磷脂含量高的膜上转移到缺少磷脂的膜上, 即从磷脂合成的部位内质网转向线粒体或过氧化物酶体上。