首页> 美国卫生研究院文献>Acta Crystallographica Section F: Structural Biology and Crystallization Communications >Structure of the β-form of human MK2 in complex with the non-selective kinase inhibitor TEI-L03090
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Structure of the β-form of human MK2 in complex with the non-selective kinase inhibitor TEI-L03090

机译:与非选择性激酶抑制剂TEI-L03090结合的人MK2β型结构

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摘要

Mitogen-activated protein kinase-activated protein kinase 2 (MK2 or MAPKAP-K2), a serine/threonine kinase from the p38 mitogen-activated protein kinase signalling pathway, plays an important role in the production of TNF-α and other cytokines. In a previous report, it was shown that MK2 in complex with the selective inhibitor TEI- adopts an α-helical glycine-rich loop that is induced by the stable nonplanar conformer of TEI-. To understand the mechanism of the structural change, the structure of MK2 bound to TEI-L03090, which lacks the key substituent found in TEI-, was determined. MK2–TEI-L03090 has a β-sheet glycine-rich loop in common with other kinases, as predicted. This result suggests that a small compound can induce a drastic conformational change in the target protein structure and can be used to design potent and selective inhibitors.
机译:丝裂原激活的蛋白激酶激活的蛋白激酶2(MK2或MAPKAP-K2),来自p38丝裂原激活的蛋白激酶信号传导途径的丝氨酸/苏氨酸激酶,在TNF-α和其他细胞因子的产生中起重要作用。在先前的报道中,表明与选择性抑制剂TEI-复合的MK2采用了富含α-螺旋甘氨酸的环,该环由TEI-的稳定的非平面构象异构体诱导。为了了解结构变化的机理,确定了与TEI-L03090结合的MK2结构,该结构缺少TEI-中发现的关键取代基。如预期的那样,MK2-TEI-L03090具有与其他激酶相同的富含β-折叠的富含甘氨酸的环。该结果表明,小的化合物可以诱导靶蛋白结构发生剧烈的构象变化,并可用于设计有效的和选择性的抑制剂。

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