The extended PP1 toolkit: designed to create specificity.

The extended PP1 toolkit: designed to create specificity.
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DOI:
10.1016/j.tibs.2010.03.002
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发表时间:
2010-08
影响因子:
13.8
通讯作者:
Beullens, Monique
Beullens, Monique
中科院分区:
生物学1区
文献类型:
--
作者:
Bollen, Mathieu;Peti, Wolfgang;Ragusa, Michael J.;Beullens, Monique

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蛋白质丝氨酸/苏氨酸磷酸酶-1(PP1)以高度调控和选择性的方式催化大多数真核蛋白质去磷酸化反应。最近的研究已经确定了一个异常多样化的PP1相互作用体,具有调控工具箱的特性。PP1相互作用蛋白(PIP)作为靶向亚单位、底物和/或抑制物发挥作用。作为靶向亚基,PIP通过将PP1带到特定底物附近,并通过增加底物对接位点或阻断底物结合通道来调节底物特异性,从而有助于底物的选择。近200个已建立的哺乳动物PIP中的许多被预测为本质上无序的,这一特性有助于它们通过多个对接基序与PP1的大表面积结合。这些新颖的见解为通过干扰PIP或底物的结合来靶向PP1的治疗提供了前景。
Protein Ser/Thr phosphatase-1 (PP1) catalyzes the majority of eukaryotic protein dephosphorylation reactions in a highly regulated and selective manner. Recent studies have identified an unusually diversified PP1 interactome with the properties of a regulatory toolkit. PP1-interacting proteins (PIPs) function as targeting subunits, substrates and/or inhibitors. As targeting subunits, PIPs contribute to substrate selection by bringing PP1 into the vicinity of specific substrates and by modulating substrate specificity via additional substrate docking sites or blocking substrate-binding channels. Many of the nearly 200 established mammalian PIPs are predicted to be intrinsically disordered, a property that facilitates their binding to a large surface area of PP1 via multiple docking motifs. These novel insights offer perspectives for the therapeutic targeting of PP1 by interfering with the binding of PIPs or substrates.
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