Conformational search simulations of Trp-cage using genetic crossover

We applied an effective conformational sampling method using genetic crossover to Trp-cage mini-protein. In this method, we incorporate the genetic crossover, which is one of the operations of genetic algorithm, in parallel molecular dynamics simulations. The genetic crossover can search the global conformational space by exchanging the corresponding parts between a pair of conformations of a protein. In this study, we applied this method to an -helical protein, Trp-cage mini protein, which has 20 amino-acid residues. The conformations obtained from the simulations are in good agreement with the experimental results.

[1]  Yuko Okamoto,et al.  Replica-exchange multicanonical and multicanonical replica-exchange Monte Carlo simulations of peptides. II. Application to a more complex system , 2003 .

[2]  Berg,et al.  Multicanonical ensemble: A new approach to simulate first-order phase transitions. , 1992, Physical review letters.

[3]  C. D. Gelatt,et al.  Optimization by Simulated Annealing , 1983, Science.

[4]  K. Hukushima,et al.  Exchange Monte Carlo Method and Application to Spin Glass Simulations , 1995, cond-mat/9512035.

[5]  G. Parisi,et al.  Simulated tempering: a new Monte Carlo scheme , 1992, hep-lat/9205018.

[6]  David E. Goldberg,et al.  Genetic Algorithms in Search Optimization and Machine Learning , 1988 .

[7]  B. Berg,et al.  Multicanonical algorithms for first order phase transitions , 1991 .

[8]  A. Lyubartsev,et al.  New approach to Monte Carlo calculation of the free energy: Method of expanded ensembles , 1992 .

[9]  Tomoyuki Hiroyasu,et al.  Parallel Simulated Annealing using Genetic Crossover , 2000 .

[10]  Hoover,et al.  Canonical dynamics: Equilibrium phase-space distributions. , 1985, Physical review. A, General physics.

[11]  Yuko Okamoto,et al.  Protein structure predictions by parallel simulated annealing molecular dynamics using genetic crossover , 2011, J. Comput. Chem..

[12]  A Mitsutake,et al.  Generalized-ensemble algorithms for molecular simulations of biopolymers. , 2000, Biopolymers.

[13]  W. C. Still,et al.  The GB/SA Continuum Model for Solvation. A Fast Analytical Method for the Calculation of Approximate Born Radii , 1997 .

[14]  Yuko Okamoto,et al.  A Conformational Search Method for Protein Systems Using Genetic Crossover and Metropolis Criterion , 2014, 1505.05709.

[15]  J. W. Neidigh,et al.  Designing a 20-residue protein , 2002, Nature Structural Biology.

[16]  R. Zhou Replica exchange molecular dynamics method for protein folding simulation. , 2007, Methods in molecular biology.

[17]  Examination of Parallel Simulated Annealing using Genetic Crossover , 2002 .

[18]  W. C. Still,et al.  Semianalytical treatment of solvation for molecular mechanics and dynamics , 1990 .

[19]  V. Hornak,et al.  Comparison of multiple Amber force fields and development of improved protein backbone parameters , 2006, Proteins.

[20]  John H. Holland,et al.  Adaptation in Natural and Artificial Systems: An Introductory Analysis with Applications to Biology, Control, and Artificial Intelligence , 1992 .