PROTEIN FOLDING BOTTLENECKS - A LATTICE MONTE-CARLO SIMULATION

被引：269

作者：

SHAKHNOVICH, E ^{[1
]}

FARZTDINOV, G ^{[1
]}

GUTIN, AM ^{[1
]}

KARPLUS, M ^{[1
]}

机构：

[1] ACAD SCI USSR,INST PROT RES,PUSHCHINO 142292,USSR

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.67.1665

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Results of Monte Carlo simulations of folding of a model "protein," which is a freely joined 27-monomer chain on a simple cubic lattice with nearest-neighbor interactions, are reported. All compact self-avoiding conformations of this chain have been enumerated, and the conformation ("native") corresponding to the global minimum of energy is known for each sequence. Only one out of thirty sequences folds and finds the global minimum. For this sequence, the folding process has a two-stage character, with a rapid noncooperative compactization followed by a slower transition over a free-energy barrier to the global minimum. The evolutionary implications of the results are discussed.

引用

页码：1665 / 1668

页数：4

共 18 条

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