Ras trafficking, localization and compartmentalized signalling.

Ras trafficking, localization and compartmentalized signalling.
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DOI:
10.1016/j.semcdb.2011.09.002
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发表时间:
2012-04
影响因子:
7.3
通讯作者:
Hancock, John F.
Hancock, John F.
中科院分区:
生物学2区
文献类型:
--
作者:
Prior, Ian A.;Hancock, John F.

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Ras 蛋白是原癌基因,在人类癌症中经常发生突变。 HRAS、KRAS 和 NRAS 三种密切相关的亚型在所有细胞中表达,并且具有重叠但独特的功能。最近的工作揭示了 Ras 亚型在运输、定位和蛋白质膜方向方面的差异如何能够确定信号传导特异性。我们回顾了用于表征 Ras 定位和信号传导的各种策略。定位是信号网络的重要上下文修饰符,Ras 系统的见解对于对膜发起的信号传导感兴趣的研究人员具有广泛的相关性。
Ras proteins are proto-oncogenes that are frequently mutated in human cancers. Three closely related isoforms, HRAS, KRAS and NRAS, are expressed in all cells and have overlapping but distinctive functions. Recent work has revealed how differences between the Ras isoforms in their trafficking, localization and protein-membrane orientation enable signalling specificity to be determined. We review the various strategies used to characterize compartmentalized Ras localization and signalling. Localization is an important contextual modifier of signalling networks and insights from the Ras system are of widespread relevance for researchers interested in signalling initiated from membranes.
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