Evolutionary diversity of the mitochondrial calcium uniporter.

Evolutionary diversity of the mitochondrial calcium uniporter.
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DOI:
10.1126/science.1214977
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发表时间:
2012-05-18
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Mootha VK
Mootha VK
中科院分区:
其他
文献类型:
--
作者:
Bick AG;Calvo SE;Mootha VK

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钙进入线粒体的吸收是通过最近发现的一种称为单向转运体的离子通道进行的。在这里,我们的特点是单转运蛋白的跨膜孔亚基(MCU)和监管伙伴(MICU1)的基因组分布。这两种成分的同源物往往共同出现在真核生物的所有主要分支中,但在某些原生动物和真菌谱系中两者都已经丢失。一些细菌基因组也含有推定的MCU同系物,可能代表原核生物的钙通道。分析表明,单向转运体可能是线粒体的早期特征。
Calcium uptake into mitochondria occurs via a recently identified ion channel called the uniporter. Here, we characterize the phylogenomic distribution of the uniporter’s membrane-spanning pore subunit (MCU) and regulatory partner (MICU1). Homologs of both components tend to co-occur in all major branches of eukaryotic life, but both have been lost along certain protozoan and fungal lineages. Several bacterial genomes also contain putative MCU homologs that may represent prokaryotic calcium channels. The analyses indicate that the uniporter may have been an early feature of mitochondria.
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