SRPassing Co-translational Targeting: The Role of the Signal Recognition Particle in Protein Targeting and mRNA Protection.

SRPassing Co-translational Targeting: The Role of the Signal Recognition Particle in Protein Targeting and mRNA Protection.
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DOI:
10.3390/ijms22126284
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发表时间:
2021-06-11
影响因子:
5.6
通讯作者:
Karamyshev AL
Karamyshev AL
中科院分区:
生物学2区
文献类型:
--
作者:
Kellogg MK;Miller SC;Tikhonova EB;Karamyshev AL

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信号识别颗粒(SignalRecognitionParticle,SRP)是一种RNA和蛋白质复合物,广泛存在于生命的各个领域。在某些细菌中,它由一种蛋白质和一种非编码RNA组成。它在真核生物中更复杂,在哺乳动物中由六种蛋白质和一种非编码RNA组成。在真核细胞质中,SRP协同靶向蛋白质至内质网并防止分泌蛋白质在细胞质中的错误折叠和聚集。最近研究表明,SRP还具有一种早期未知的功能,即保护分泌蛋白的mRNA不被降解。本文就SRPs的来源、生物起源、结构、蛋白靶向和mRNA保护等方面的研究进展进行了综述。
Signal recognition particle (SRP) is an RNA and protein complex that exists in all domains of life. It consists of one protein and one noncoding RNA in some bacteria. It is more complex in eukaryotes and consists of six proteins and one noncoding RNA in mammals. In the eukaryotic cytoplasm, SRP co-translationally targets proteins to the endoplasmic reticulum and prevents misfolding and aggregation of the secretory proteins in the cytoplasm. It was demonstrated recently that SRP also possesses an earlier unknown function, the protection of mRNAs of secretory proteins from degradation. In this review, we analyze the progress in studies of SRPs from different organisms, SRP biogenesis, its structure, and function in protein targeting and mRNA protection.
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