Uversky Vladimir N
Department of Molecular Medicine and USF Health Byrd Alzheimer's Research Institute; Morsani College of Medicine; University of South Florida; Tampa, FL USA.
Institute for Biological Instrumentation; Russian Academy of Sciences; Moscow Region, Russia.
Intrinsically Disord Proteins. 2013 Jul 11;1(1):e25725. doi: 10.4161/idp.25725. eCollection 2013 Jan-Dec.
A hypothesis is proposed on a potential role of protein dielectricity as an unfolding factor in protein-protein interactions. It is suggested that large protein complexes and aggregation seeds can unfold target proteins by virtue of their effect on the dielectric properties of water at the protein-solvent interface. Here, similar to the effect of membrane surfaces, protein surface can cause decrease in the local dielectric constant of solvent and thereby induce structural changes in a target protein approaching this surface. Some potential implementations of this hypothetical mechanism are also discussed.
提出了一个关于蛋白质介电常数作为蛋白质-蛋白质相互作用中解折叠因子的潜在作用的假说。有人认为,大的蛋白质复合物和聚集种子可以通过其对蛋白质-溶剂界面处水的介电性质的影响来使靶蛋白解折叠。在这里,类似于膜表面的作用,蛋白质表面可导致溶剂的局部介电常数降低,从而在接近该表面的靶蛋白中诱导结构变化。还讨论了这一假说机制的一些潜在应用。