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Analysis of protein binding to receptor-doped lipid monolayers by Monte Carlo simulation.

机译:通过蒙特卡罗模拟分析蛋白质与受体掺杂脂质单层的结合。

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摘要

This paper presents a Monte Carlo simulation (MCS) method for estimating the parameters that characterize ligand-receptor binding directly from experimentally derived binding isotherms. Binding parameters are estimated by incorporating an MCS algorithm for ligand binding to a two-dimensional receptor array into a nonlinear regression program. The MCS method was tested by analyzing experimental isotherms of avidin binding to biotinylated lipid in Langmuir-Blodgett (LB) monolayers. The MCS-derived cooperativity coefficients and intrinsic association constants for avidin-biotin binding to LB films are correlated strongly (R2 > 0.93) with the binding parameters determined from the same experimental data by a thermodynamic equilibrium binding model (Zhao et al. 1993. Langmuir. 9:3166-3173). This result shows MCS to be an accurate and potentially more versatile method for characterizing biomolecular interactions at surfaces.
机译:本文提出了一种蒙特卡罗模拟(MCS)方法,用于从实验衍生的结合等温线直接估算表征配体-受体结合的参数。通过将用于配体结合到二维受体阵列的MCS算法纳入非线性回归程序,可以估计结合参数。通过分析抗生物素蛋白与Langmuir-Blodgett(LB)单层生物素化脂质结合的实验等温线,测试了MCS方法。抗生物素蛋白-生物素与LB膜结合的MCS衍生的协同系数和内在缔合常数与由热力学平衡结合模型从同一实验数据确定的结合参数密切相关(R2> 0.93)(Zhao等,1993。Langmuir 9:3166-3173)。该结果表明,MCS是表征表面生物分子相互作用的准确且可能用途更广泛的方法。

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