Energetics of Hydrophilic Protein-Protein Association and the Role of Water.
Energetics of Hydrophilic Protein-Protein Association and the Role of Water.
复制标题
亲水性蛋白质-蛋白质缔合的能量学和水的作用
DOI:
10.1021/ct5001796
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发表时间:
2014
影响因子:
5.5
通讯作者:
Tanushree
中科院分区:
文献类型:
--
作者:
Ulucan;Tanushree
Hydrophilic protein–protein interfaces constitute a major part of all protein–protein interfaces and are thus of great importance. However, the quantitative characterization of their association is still an ongoing challenge and the driving force behind their association remains poorly characterized. Here, we have addressed the association of hydrophilic proteins and the role of water by means of extensive molecular dynamics simulations in explicit water using three well studied protein complexes; Barnase–Barstar, cytochrome c–cytochrome c peroxidase, and the N-terminal domain of enzyme I-histidine-containing phosphocarrier. The one-dimensional free energy profiles obtained from umbrella sampling simulations are downhill or, in other words, barrierless. Using these one-dimensional free energy profiles, the computed standard free energies of binding are −12.7 ± 1.1 kcal/mol, −9.4 ± 0.7 kcal/mol, and −8.4 ± 1.9 kcal/mol that are in reasonable to very good agreement with the experimental values of −19.6 kcal/mol, −8.8 kcal/mol, and −7.8 kcal/mol. As expected, analysis of the confined water between the hydrophilic complex partners shows that the density and the orientational order parameter deviate noticeably from the bulk values, especially at close separations of the confining proteins.
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DOI:
10.1021/bi961487k
发表时间:
1996
期刊:
Biochemistry.
影响因子:
--
作者:
Mei,H;Wang,K;McKee,S;Wang,X;Waldner,JL;Pielak,GJ;Durham,B;Millett,F
通讯作者:
Millett,F
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
I. Danielewicz;A. Ferchmin
通讯作者:
A. Ferchmin
影响因子:
16.6
作者:
McLain, Sylvia E.;Soper, Alan K.;Watts, Anthony
通讯作者:
Watts, Anthony
影响因子:
5.5
作者:
Gumbart, James C.;Roux, Benoit;Chipot, Christophe
通讯作者:
Chipot, Christophe
影响因子:
3.7
作者:
Hua, Lan;Zangi, Ronen;Berne, B. J.
通讯作者:
Berne, B. J.