arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1102.0308cond-mat.softphysics.comp-phq-bio.BM
收藏

HP模型(蛋白质折叠的“伊辛模型“)的蒙特卡罗模拟

Monte Carlo simulations of the HP model (the "Ising model" of protein folding)

Ying Wai Li, Thomas Wüst, David P. Landau

摘要:

使用Wang-Landau抽样与适当的Monte Carlo试验移动(拉动移动和键重桥移动相结合),我们已经确定了一个短序列的HP蛋白质模型的态密度和热力学性质。对于游离链,已知这些蛋白质首先经历塌陷“转变”为球状状态,然后第二次“转变”为天然状态。当放置在一个有吸引力的表面附近时,表面吸附和折叠之间存在竞争,导致一系列有趣的“转变”。这些转变取决于相对相互作用强度,并且在很大程度上无法使用“标准”蒙特卡罗方法。

英文摘要:

Using Wang-Landau sampling with suitable Monte Carlo trial moves (pull moves and bond-rebridging moves combined) we have determined the density of states and thermodynamic properties for a short sequence of the HP protein model. For free chains these proteins are known to first undergo a collapse "transition" to a globule state followed by a second "transition" into a native state. When placed in the proximity of an attractive surface, there is a competition between surface adsorption and folding that leads to an intriguing sequence of "transitions". These transitions depend upon the relative interaction strengths and are largely inaccessible to "standard" Monte Carlo methods.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑