同源蛋白质复合物的自组装与进化
The self-assembly and evolution of homomeric protein complexes
摘要:
我们引入一个简单的“补丁粒子”模型来研究同质蛋白质复合物自组装的热力学和动力学。我们的计算使我们能够合理化二面角配合物最近的结果。也就是说,为什么这种复合物的进化自然地把系统带入一个相互作用空间的区域,其中(i)进化上较新的相互作用较弱,(ii)观察到涉及较强相互作用的亚复合物在蛋白质相互作用不稳定时是化学稳定的,以及(iii)自组装动力学是分层的,这些相同的亚复合物充当动力学中间体。
英文摘要:
We introduce a simple "patchy particle" model to study the thermodynamics and dynamics of self-assembly of homomeric protein complexes. Our calculations allow us to rationalize recent results for dihedral complexes. Namely, why evolution of such complexes naturally takes the system into a region of interaction space where (i) the evolutionarily newer interactions are weaker, (ii) subcomplexes involving the stronger interactions are observed to be thermodynamically stable on destabilization of the protein-protein interactions and (iii) the self-assembly dynamics are hierarchical with these same subcomplexes acting as kinetic intermediates.
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