Solution effects and the folding of an artificial peptide

被引:5
作者
Alves, NA
Hansmann, UHE
机构
[1] Univ Sao Paulo, Dept Fis & Matemat, FFCLRP, BR-14040901 Ribeirao Preto, SP, Brazil
[2] Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA
关键词
D O I
10.1021/jp034964z
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We explore for a simple artificial peptide, Ala(10)-GIY(5)-Ala(10), the relation between secondary structure formation and folding and its dependence on the solvent model. Our data rely on multicanonical Monte Carlo simulations where the interactions among all atoms are taken into account. Three implicit solvent models are considered to approximate the interaction between protein and the surrounding water, and the results are compared to previous data from gas-phase simulations. Our data indicate that the final structure and the details of the folding process depend strongly on how the solvent environment affects secondary structure formation.
引用
收藏
页码:10284 / 10291
页数:8
相关论文
共 36 条
[1]   Partition function zeros and finite size scaling of helix-coil transitions in a polypeptide [J].
Alves, NA ;
Hansmann, UHE .
PHYSICAL REVIEW LETTERS, 2000, 84 (08) :1836-1839
[2]   A new look at the 2D Ising model from exact partition function zeros for large lattice sizes [J].
Alves, NA ;
De Felicio, JRD ;
Hansmann, UHE .
INTERNATIONAL JOURNAL OF MODERN PHYSICS C, 1997, 8 (05) :1063-1071
[3]   Numerical comparison of two approaches for the study of phase transitions in small systems [J].
Alves, Nelson A. ;
Ferrite, Jeaneti P.N. ;
Hansmann, Ulrich H.E. .
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2002, 65 (03) :1-036110
[4]   Helix formation and folding in an artificial peptide [J].
Alves, NA ;
Hansmann, UHE .
JOURNAL OF CHEMICAL PHYSICS, 2002, 117 (05) :2337-2343
[5]   MULTICANONICAL ALGORITHMS FOR 1ST ORDER PHASE-TRANSITIONS [J].
BERG, BA ;
NEUHAUS, T .
PHYSICS LETTERS B, 1991, 267 (02) :249-253
[6]   Multicanonical recursions [J].
Berg, BA .
JOURNAL OF STATISTICAL PHYSICS, 1996, 82 (1-2) :323-342
[7]   FIRST-PRINCIPLES CALCULATION OF THE FOLDING FREE-ENERGY OF A 3-HELIX BUNDLE PROTEIN [J].
BOCZKO, EM ;
BROOKS, CL .
SCIENCE, 1995, 269 (5222) :393-396
[8]   Classification of phase transitions in small systems [J].
Borrmann, P ;
Mülken, O ;
Harting, J .
PHYSICAL REVIEW LETTERS, 2000, 84 (16) :3511-3514
[9]   SPIN-GLASSES AND THE STATISTICAL-MECHANICS OF PROTEIN FOLDING [J].
BRYNGELSON, JD ;
WOLYNES, PG .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1987, 84 (21) :7524-7528
[10]   [SMMP] A modern package for simulation of proteins [J].
Eisenmenger, F ;
Hansmann, UHE ;
Hayryan, S ;
Hu, CK .
COMPUTER PHYSICS COMMUNICATIONS, 2001, 138 (02) :192-212