Molecular mechanism of co-translational protein targeting by the signal recognition particle.

Molecular mechanism of co-translational protein targeting by the signal recognition particle.
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DOI:
10.1111/j.1600-0854.2011.01171.x
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发表时间:
2011-05
期刊:
Traffic (Copenhagen, Denmark)
影响因子:
--
通讯作者:
Shan SO
Shan SO
中科院分区:
其他
文献类型:
--
作者:
Saraogi I;Shan SO

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信号识别粒子(SRP)是细胞机制的关键组成部分,将正在进行的蛋白质合成偶联到它们的适当定位,并且经常作为理解细胞内蛋白质定位的分子基础的范例。SRP途径举例说明了蛋白质靶向细胞膜所需的几个关键分子事件:对货物蛋白上信号序列的特定识别,将货物有效地运送到目标膜,将货物有效地卸载到易位机制,以及这些分子事件的精确空间和时间协调。在这里,我们强调了我们对这一途径的分子机制的理解的最新进展,并讨论了这些发现提出的新问题。
The Signal Recognition Particle (SRP) is a key component of the cellular machinery that couples the ongoing synthesis of proteins to their proper localization, and has often served as a paradigm for understanding the molecular basis of protein localization within the cell. The SRP pathway exemplifies several key molecular events required for protein targeting to cellular membranes: the specific recognition of signal sequences on cargo proteins, the efficient delivery of cargo to the target membrane, the productive unloading of cargo to the translocation machinery, and the precise spatial and temporal coordination of these molecular events. Here we highlight recent advances in our understanding of the molecular mechanisms underlying this pathway, and discuss new questions raised by these findings.
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