A structural perspective on the regulation of the epidermal growth factor receptor.

A structural perspective on the regulation of the epidermal growth factor receptor.
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DOI:
10.1146/annurev-biochem-060614-034402
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发表时间:
2015
影响因子:
16.6
通讯作者:
Kuriyan J
Kuriyan J
中科院分区:
生物学1区
文献类型:
--
作者:
Kovacs E;Zorn JA;Huang Y;Barros T;Kuriyan J

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表皮生长因子受体(EGFR)是一种酪氨酸激酶受体,在许多癌症的发病机制中起着至关重要的作用。EGFR的独特之处在于,其配体诱导的二聚化仅通过受体区域之间的接触而建立,这些区域被封闭在单体,非配体状态中。EGFR的激活依赖于两个受体分子的细胞内模块的不对称二聚体的形成,在活性状态下的EGFR激酶结构域的晶体结构中观察到这种结构。细胞外和细胞内模块之间的耦合是通过受体二聚体内跨膜和近膜段的不同几何形状之间的切换来实现的。由于全长受体的结构尚未确定,在这里,我们回顾了最近对EGFR分离模块的结构研究和分子动力学模拟,这些研究提供了我们目前对其信号传导机制的大部分理解,包括其调控如何受到致癌突变的损害。
The epidermal growth factor receptor (EGFR) is a receptor tyrosine kinase that plays a critical role in the pathogenesis of many cancers. EGFR is unique in that its ligand-induced dimerization is established solely by contacts between regions of the receptor that are occluded within the monomeric, unliganded state. Activation of EGFR depends on the formation of an asymmetric dimer of the intracellular module of two receptor molecules, a configuration observed in crystal structures of the EGFR kinase domain in the active state. Coupling between the extracellular and intracellular modules is achieved by a switch between alternative geometries of the transmembrane and juxtamembrane segments within the receptor dimer. As the structure of the full-length receptor is yet to be determined, here we review recent structural studies on isolated modules of EGFR and molecular dynamics simulations that have provided much of our current understanding of its signaling mechanism, including how its regulation is compromised by oncogenic mutations.
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