Oligomeric forms of G protein-coupled receptors (GPCRs).

Oligomeric forms of G protein-coupled receptors (GPCRs).
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DOI:
10.1016/j.tibs.2010.05.002
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发表时间:
2010-11
影响因子:
13.8
通讯作者:
Palczewski, Krzysztof
Palczewski, Krzysztof
中科院分区:
生物学1区
文献类型:
--
作者:
Palczewski, Krzysztof

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寡聚化是细胞膜受体的一般特征,其由G蛋白偶联受体(GPCR)与它们的G蛋白伴侣一起共享。最近的研究,这些复合物,在体内和纯化的重建形式,明确支持这一论点的GPCR,也许只有很少的例外。随着证据从实验细胞系发展到更相关的体内研究,以及从间接生物物理方法发展到单独的二聚体受体和与G蛋白复合的明确分离的复合物,人们期望寡聚化的结构基础和膜信号传导的功能后果将得到阐明。细胞膜受体的寡聚化完全得到热力学计算和到达位于各种细胞区室中的靶所需的信号传导的选择性和持续时间的支持。
Oligomerization is a general characteristic of cell membrane receptors that is shared by G protein-coupled receptors (GPCRs) together with their G protein partners. Recent studies of these complexes, both in vivo and in purified reconstituted forms, unequivocally support this contention for GPCRs, perhaps with only rare exceptions. As evidence has evolved from experimental cell lines to more relevant in vivo studies and from indirect biophysical approaches to well defined isolated complexes of dimeric receptors alone and complexed with G proteins, there is an expectation that the structural basis of oligomerization and the functional consequences for membrane signaling will be elucidated. Oligomerization of cell membrane receptors is fully supported by both thermodynamic calculations and the selectivity and duration of signaling required to reach targets located in various cellular compartments.
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