Digitale Medien
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
117 (2002), S. 1363-1376
ISSN:
1089-7690
Quelle:
AIP Digital Archive
Thema:
Physik
,
Chemie und Pharmazie
Notizen:
A parallel searching algorithm based on eigenvector-following is used to generate databases of minima and transition states for all-atom models of Ac(ala)12NHMe and Ac(ala)16NHMe. The AMBER95 force field of Cornell et al. [J. Am. Chem. Soc. 117, 5179 (1995)] is employed both with and without a simple implicit solvent. We use a master equation approach to analyze the dynamics of both systems, and relate the results to the potential energy landscapes using disconnectivity graphs. The low-lying regions of both energy landscapes are compared and found to be remarkably similar. α-helix formation occurs via an ensemble of pathways involving both the N- and C-termini. The global minima of the two systems are also located using the CHARMM22 force field of Mackerell et al. [J. Phys. Chem. B 102, 3586 (1998)], for comparison with AMBER95. © 2002 American Institute of Physics.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.1484389
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