Identification of Oxa1 Homologs Operating in the Eukaryotic Endoplasmic Reticulum.

Identification of Oxa1 Homologs Operating in the Eukaryotic Endoplasmic Reticulum.
复制标题

真核内质网中 Oxa1 同源物的鉴定。

DOI:
10.1016/j.celrep.2017.12.006
复制
发表时间:
2017-12-26
期刊:
影响因子:
8.8
通讯作者:
Keenan RJ
Keenan RJ
中科院分区:
生物学1区
文献类型:
--
作者:
Anghel SA;McGilvray PT;Hegde RS;Keenan RJ

文献摘要

参考文献

被引文献

相似文献

进化上保守的Oxa 1/Alb 3/YidC家族成员分别介导线粒体内膜、叶绿体类囊体膜和细菌质膜上的膜蛋白生物合成。尽管它们广泛的系统发育分布,没有Oxa 1/Alb 3/YidC同源物是已知的内共生细胞器以外的真核细胞中运行。在这里,我们提出的生物信息学证据表明,尾锚定蛋白插入因子WRB/Get 1,“内质网(ER)膜复合物”亚基EMC 3,和TMCO 1是ER居民同源的Oxa 1/Alb 3/YidC家族。拓扑映射和基于协同进化的建模表明,Get 1,EMC 3和TMCO 1共享一个保守的Oxa 1类似的架构。人TMCO 1,唯一的同系物以前没有联系到膜蛋白生物合成的生化分析表明,它与Sec易位子和核糖体。这些研究结果表明,一个特定的生化功能TMCO 1和定义一个超家族的蛋白质-“Oxa 1超家族”-其共同的功能是促进膜蛋白的生物合成。
Members of the evolutionarily conserved Oxa1/Alb3/YidC family mediate membrane protein biogenesis at the mitochondrial inner membrane, chloroplast thylakoid membrane, and bacterial plasma membrane, respectively. Despite their broad phylogenetic distribution, no Oxa1/Alb3/YidC homologs are known to operate in eukaryotic cells outside the endosymbiotic organelles. Here, we present bioinformatic evidence that the tail-anchored protein insertion factor WRB/Get1, the “endoplasmic reticulum (ER) membrane complex” subunit EMC3, and TMCO1 are ER-resident homologs of the Oxa1/Alb3/YidC family. Topology mapping and co-evolution-based modeling demonstrate that Get1, EMC3, and TMCO1 share a conserved Oxa1-like architecture. Biochemical analysis of human TMCO1, the only homolog not previously linked to membrane protein biogenesis, shows that it associates with the Sec translocon and ribosomes. These findings suggest a specific biochemical function for TMCO1 and define a superfamily of proteins—the “Oxa1 superfamily”—whose shared function is to facilitate membrane protein biogenesis.
DOI: 10.1038/nrm3226
发表时间: 2011-11-16
期刊: Nature reviews. Molecular cell biology
影响因子: --
作者:
通讯作者: --
DOI: 10.1099/00207713-52-2-297
发表时间: 2002-03-01
影响因子: 2.8
作者:
Cavalier-Smith, T
通讯作者: Cavalier-Smith, T
DOI: 10.1002/ajmg.a.36248
发表时间: 2014-02-01
影响因子: 2
作者:
Alanay, Yasemin;Erguner, Bekir;Akarsu, Nurten Ayse
通讯作者: Akarsu, Nurten Ayse
DOI: 10.1002/mbo3.9
发表时间: 2012-03
期刊: MICROBIOLOGYOPEN
影响因子: 3.4
作者:
Aschtgen, Marie-Stephanie;Zoued, Abdelrahim;Lloubes, Roland;Journet, Laure;Cascales, Eric
通讯作者: Cascales, Eric
DOI: 10.1093/bioinformatics/btp348
发表时间: 2009-08-01
期刊: Bioinformatics (Oxford, England)
影响因子: --
作者:
Capella-Gutiérrez S;Silla-Martínez JM;Gabaldón T
通讯作者: Gabaldón T