NATURE:H +转运是线粒体ADP / ATP载体的整合功能

2019-07-27 海北 MedSci原创

线粒体ADP / ATP载体(AAC)是线粒体内膜的主要转运蛋白。它交换线粒体ATP和细胞溶质ADP,并控制ATP的细胞产生。 此外,研究人员已经提出AAC可以介导线粒体解偶联,但人们难以证明该功能或阐明其机制。

线粒体ADP / ATP载体(AAC)是线粒体内膜的主要转运蛋白。它交换线粒体ATP和细胞溶质ADP,并控制ATP的细胞产生。
此外,研究人员已经提出AAC可以介导线粒体解偶联,但人们难以证明该功能或阐明其机制。
最近,研究人员直接从各种小鼠组织的线粒体内膜记录AAC电流,并确定两种不同的转运模式:ADP / ATP交换和H +转运。 
AAC介导的H +电流需要游离脂肪酸,并且类似于通过棕色脂肪中发现的产热解偶联蛋白1的H +泄漏。
通过AAC的ADP / ATP交换负向调节H +泄漏,但不完全抑制它。
这表明H +泄漏和线粒体解偶联可以通过细胞ATP需求,以及ADP / ATP交换速率动态控制。
通过介导两种不同的转运模式,即ADP / ATP交换和H +泄漏,AAC连接线粒体中的偶联(ATP产生)和非偶联(产热)能量转换。


原始出处:
Bertholet AM et al. H+ transport is an integral function of the mitochondrial ADP/ATP carrier. NATURE 2018, DOI: 10.1038/s41586-019-1400-3

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    2019-11-05 yzh409
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    2020-05-07 mei539
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    2019-09-06 liye789132251
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    2019-07-28 listen320
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    2019-07-27 1ddf0692m34(暂无匿称)

    学习了,长知识

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