Tie2 and Eph receptor tyrosine kinase activation and signaling.

Tie2 and Eph receptor tyrosine kinase activation and signaling.
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DOI:
10.1101/cshperspect.a009142
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发表时间:
2014-03-01
影响因子:
7.2
通讯作者:
Nikolov DB
Nikolov DB
中科院分区:
生物学1区
文献类型:
--
作者:
Barton WA;Dalton AC;Seegar TC;Himanen JP;Nikolov DB

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Eph和Tie细胞表面受体在发育过程中和成年生物体中调节各种信号事件。与其他受体酪氨酸激酶一样,它们在与细胞外配体结合后被激活,其催化活性在多个水平上受到严格调控。Eph和Tie受体表现出一些独特的特征,包括需要配体诱导的受体聚集才能有效地传递信号。有趣的是,Ephs和Ties都可以调节不同的,甚至相反的生物效应,这取决于引发反应的特定配体和细胞环境。在这里,我们讨论了这些受体的结构特征,它们与各种配体的相互作用,以及对下游信号启动的功能影响。Eph/ePhrin结构已经得到了很好的审查,我们只提供了对初始结合事件的简要概述。我们将更详细地讨论Tie-Angiopoietin的结构和识别。
The Eph and Tie cell surface receptors mediate a variety of signaling events during development and in the adult organism. As other receptor tyrosine kinases, they are activated on binding of extracellular ligands and their catalytic activity is tightly regulated on multiple levels. The Eph and Tie receptors display some unique characteristics, including the requirement of ligand-induced receptor clustering for efficient signaling. Interestingly, both Ephs and Ties can mediate different, even opposite, biological effects depending on the specific ligand eliciting the response and on the cellular context. Here we discuss the structural features of these receptors, their interactions with various ligands, as well as functional implications for downstream signaling initiation. The Eph/ephrin structures are already well reviewed and we only provide a brief overview on the initial binding events. We go into more detail discussing the Tie-angiopoietin structures and recognition.
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