Journal
JOURNAL OF COMPUTATIONAL CHEMISTRY
Volume 31, Issue 5, Pages 1106-1116Publisher
WILEY
DOI: 10.1002/jcc.21388
Keywords
molecular dynamics; free energy; non equilibrium; metadynamics; replica exchange method; solute tempering
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We present the new release of the ORAC engine (Procacci et al., Comput Chem 1997 18, 1834), a FORTRAN Suite to Simulate complex biosystems at the atomistic level. The previous release of the ORAC code included multiple time steps integration, smooth particle mesh Ewald method, constant pressure and constant temperature Simulations. The present release has been Supplemented with the most advanced techniques for enhanced sampling in atomistic systems including replica exchange with Solute tempering, metadynamics and steered molecular dynamics. All these Computational technologies have been implemented for parallel architectures using the standard MPI communication protocol. ORAC is an open-source, program distributed free of charge under the GNU general public license (GPL) at http://www.chim.unifi.it/orac. (C) 2009 Wiley Periodicals. Inc. J Comput Chem 31:1106-1116. 2010
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