Evolutionary gain of function for the ER membrane protein Sec62 from yeast to humans.

Evolutionary gain of function for the ER membrane protein Sec62 from yeast to humans.
复制标题

DOI:
10.1091/mbc.e09-08-0730
复制
发表时间:
2010-03-01
影响因子:
3.3
通讯作者:
Zimmermann R
Zimmermann R
中科院分区:
生物学3区
文献类型:
--
作者:
Müller L;de Escauriaza MD;Lajoie P;Theis M;Jung M;Müller A;Burgard C;Greiner M;Snapp EL;Dudek J;Zimmermann R

文献摘要

参考文献

被引文献

相似文献

我们鉴定了人类蛋白Sec62和Sec63之间的相互作用,以及人类Sec62与核糖体的相互作用。这些数据证明了Sec62/Sec63相互作用的进化保守性,并表明在进化过程中,脊椎动物的Sec62获得了与核糖体相互作用的额外功能。由于其与酵母同源物的相似性,人内质网(ER)的两种膜蛋白Sec62和Sec63有望在内质网的蛋白质生物发生中发挥作用。我们表征了这两种蛋白之间的相互作用,以及Sec62与核糖体的推定相互作用。这些数据为Sec62/Sec63相互作用的进化保守性提供了进一步的证据。此外,他们指出,在进化过程中,脊椎动物的Sec62获得了额外的功能,即与核糖体通道出口相互作用的能力,因此,支持协同翻译机制,如蛋白质转运到内质网。这一观点得到了人类细胞中Sec62与核糖体相关的观察结果的支持。因此,人Sec62/Sec63复合体和人内质网膜蛋白ERj1在内质网腔内为BiP提供结合位点和在细胞质中为核糖体提供结合位点是相似的。我们认为这两个系统对于不同的前体蛋白提供了相似的伴侣蛋白功能。
We characterized interactions between the human proteins Sec62 and Sec63 as well as the putative interaction of human Sec62 with ribosomes. The data demonstrate evolutionary conservation of Sec62/Sec63 interaction and indicate that in the course of evolution Sec62 of vertebrates has gained the additional function to interact with ribosomes. Because of similarity to their yeast orthologues, the two membrane proteins of the human endoplasmic reticulum (ER) Sec62 and Sec63 are expected to play a role in protein biogenesis in the ER. We characterized interactions between these two proteins as well as the putative interaction of Sec62 with ribosomes. These data provide further evidence for evolutionary conservation of Sec62/Sec63 interaction. In addition, they indicate that in the course of evolution Sec62 of vertebrates has gained an additional function, the ability to interact with the ribosomal tunnel exit and, therefore, to support cotranslational mechanisms such as protein transport into the ER. This view is supported by the observation that Sec62 is associated with ribosomes in human cells. Thus, the human Sec62/Sec63 complex and the human ER membrane protein ERj1 are similar in providing binding sites for BiP in the ER-lumen and binding sites for ribosomes in the cytosol. We propose that these two systems provide similar chaperone functions with respect to different precursor proteins.
DOI: 10.1083/jcb.200409174
发表时间: 2005-01-31
期刊: The Journal of cell biology
影响因子: --
作者:
Alder NN;Shen Y;Brodsky JL;Hendershot LM;Johnson AE
通讯作者: Johnson AE
DOI: 10.1038/nature02899
发表时间: 2004-09-30
期刊: NATURE
影响因子: 64.8
作者:
Ferbitz, L;Maier, T;Ban, N
通讯作者: Ban, N
DOI: 10.1053/j.gastro.2004.12.051
发表时间: 2005-03-01
期刊: GASTROENTEROLOGY
影响因子: 29.4
作者:
Schulmann, K;Brasch, FE;Speer, R
通讯作者: Speer, R
DOI: 10.1073/pnas.97.13.7214
发表时间: 2000-06-20
影响因子: 11.1
作者:
Tyedmers, J;Lerner, M;Zimmermann, R
通讯作者: Zimmermann, R
DOI: 10.1083/jcb.200312079
发表时间: 2004-03-29
期刊: The Journal of cell biology
影响因子: --
作者:
Snapp EL;Reinhart GA;Bogert BA;Lippincott-Schwartz J;Hegde RS
通讯作者: Hegde RS