Phospholipid flippases: building asymmetric membranes and transport vesicles.

Phospholipid flippases: building asymmetric membranes and transport vesicles.
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DOI:
10.1016/j.bbalip.2011.12.007
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发表时间:
2012-08
期刊:
Biochimica et biophysica acta
影响因子:
--
通讯作者:
Graham TR
Graham TR
中科院分区:
其他
文献类型:
--
作者:
Sebastian TT;Baldridge RD;Xu P;Graham TR

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IV型P型ATP酶家族中的磷脂翻转酶(P4-ATP酶)是高尔基体、质膜和内体系统的重要组成部分,在膜生物发生中起关键作用。这些泵使磷脂翻转穿过双层,以产生不对称的膜结构,其中底物磷脂,如磷脂酰丝氨酸和磷脂酰乙醇胺,在胞质小叶内富集。P4-ATP酶还有助于形成从高尔基体和内体膜出芽的运输囊泡,从而影响分泌和内吞途径中许多不同蛋白质的分选和定位。在生物体水平上,P4-ATP酶缺乏与肝脏疾病、肥胖、糖尿病、听力损失、神经缺陷、免疫缺陷和生育能力下降有关。本文综述了P4-ATP酶的生物化学、细胞和生理功能,重点介绍了其在囊泡介导的蛋白质转运中的作用。
Phospholipid flippases in the type IV P-type ATPase family (P4-ATPases) are essential components of the Golgi, plasma membrane and endosomal system that play critical roles in membrane biogenesis. These pumps flip phospholipid across the bilayer to create an asymmetric membrane structure with substrate phospholipids, such as phosphatidylserine and phosphatidylethanolamine, enriched within the cytosolic leaflet. The P4-ATPases also help form transport vesicles that bud from Golgi and endosomal membranes, thereby impacting the sorting and localization of many different proteins in the secretory and endocytic pathways. At the organismal level, P4-ATPase deficiencies are linked to liver disease, obesity, diabetes, hearing loss, neurological deficits, immune deficiency and reduced fertility. Here, we review the biochemical, cellular and physiological functions of P4-ATPases, with an emphasis on their roles in vesicle-mediated protein transport.
Drs2p的作用,P型ATPase和潜在的氨基磷脂易位酶,在高尔基酵母晚期功能中。
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