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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Scaffold proteins confer diverse regulatory properties to protein kinase cascades
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Scaffold proteins confer diverse regulatory properties to protein kinase cascades

机译:支架蛋白赋予蛋白激酶级联多种调节特性

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摘要

The assembly of multiple signaling proteins into a complex by a scaffold protein guides many cellular decisions. Despite recent advances, the overarching principles that govern scaffold function are not well understood. We carried out a computational study using kinetic Monte Carlo simulations to understand how spatial localization of kinases on a scaffold may regulate signaling under different physiological conditions. Our studies identify regulatory properties of scaffold proteins that allow them to both amplify and attenuate incoming signals in different biological contexts. These properties are not caused by the well established prozone or combinatorial inhibition effect. These results bring coherence to seemingly paradoxical observations and suggest that cells have evolved design rules that enable scaffold proteins to regulate widely disparate cellular functions.
机译:多种信号蛋白通过支架蛋白组装成复合物可指导许多细胞决定。尽管有最近的进展,但支配支架功能的总体原理仍未得到很好的理解。我们进行了使用动力学蒙特卡洛模拟的计算研究,以了解支架上激酶的空间定位如何调节不同生理条件下的信号传导。我们的研究确定了支架蛋白的调节特性,这些特性使它们能够在不同的生物学环境中放大和减弱传入的信号。这些性质不是由公认的前区或组合抑制作用引起的。这些结果使看似矛盾的观察结果具有连贯性,并表明细胞已经进化出设计规则,使支架蛋白能够调节广泛不同的细胞功能。

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