Reoptimization of the AMBER Force Field Parameters for Peptide Bond (Omega) Torsions Using Accelerated Molecular Dynamics

2009 ◽  
Vol 113 (52) ◽  
pp. 16590-16595 ◽  
Author(s):  
Urmi Doshi ◽  
Donald Hamelberg
Keyword(s):  
Molecular Dynamics ◽  
Force Field ◽  
Peptide Bond ◽  
Amber Force Field ◽  
Accelerated Molecular Dynamics ◽  
Force Field Parameters

scholarly journals New CHARMM force field parameters for dehydrated amino acid residues, the key to lantibiotic molecular dynamics simulations

RSC Advances ◽  
2014 ◽  
Vol 4 (89) ◽  
pp. 48621-48631 ◽  
Author(s):  
Eleanor R. Turpin ◽  
Sam Mulholland ◽  
Andrew M. Teale ◽  
Boyan B. Bonev ◽  
Jonathan D. Hirst
Keyword(s):  
Molecular Dynamics ◽  
Amino Acid ◽  
Force Field ◽  
Molecular Dynamics Simulations ◽  
Amino Acid Residues ◽  
Charmm Force Field ◽  
Force Field Parameters ◽  
Dynamics Simulations

VFFDT: A New Software for Preparing AMBER Force Field Parameters for Metal-Containing Molecular Systems

2016 ◽  
Vol 56 (4) ◽  
pp. 811-818 ◽  
Author(s):  
Suqing Zheng ◽  
Qing Tang ◽  
Jian He ◽  
Shiyu Du ◽  
Shaofang Xu ◽  
...  
Keyword(s):  
Force Field ◽  
Amber Force Field ◽  
Molecular Systems ◽  
Force Field Parameters

GAFFlipid: a General Amber Force Field for the accurate molecular dynamics simulation of phospholipid

Soft Matter ◽  
2012 ◽  
Vol 8 (37) ◽  
pp. 9617 ◽  
Author(s):  
Callum J. Dickson ◽  
Lula Rosso ◽  
Robin M. Betz ◽  
Ross C. Walker ◽  
Ian R. Gould
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Force Field ◽  
Dynamics Simulation ◽  
Amber Force Field

Plural Origins of Molecular Homochirality in Our Biota Part II. The Relative Stabilities of Homochiral and Mixed Oligoribotides and Peptides

1997 ◽  
Vol 52 (1-2) ◽  
pp. 89-96 ◽  
Author(s):  
Thereza Amélia Soares ◽  
Roberto Dias Lins ◽  
Ricardo Longo ◽  
Richard Garratt ◽  
Ricardo Ferreira
Keyword(s):  
Molecular Dynamics ◽  
Amino Acid ◽  
Force Field ◽  
Molecular Mechanics ◽  
Computer Simulations ◽  
The Other ◽  
Amino Acid Residues ◽  
Relative Stabilities ◽  
Amber Force Field ◽  
Cross Inhibition

Abstract By computer simulations -molecular mechanics and molecular dynamics with the amber force field (Weiner et al., (1986), J. Comp. Chem. 7, 2 30-252) -we have determined the stabilities of oligoribotide strands built with ᴅ -and ʟ-riboses, and of peptide chains with ᴅ -and ʟ-amino acid residues. In particular, complementary double-chains of oligoribotides were studied, since they are an important feature of the growing mechanism of modern nucleic acids. Peptide chains on the other hand, grow without need of a template. We found that mixed oligoribotides are less stable than homochiral ones, and that this chiral effect is less noticeable in peptide chains. The results support the interpretation that ʟ-riboses act as terminators to the template-assisted growth of oligo-r-Gᴅ (enantiomeric cross-inhibition; Joyce et al., (1987), Proc. Natl. Acad. Sci. USA 84, 4398-4402). Based on this effect, a chemical pathway is proposed which could, under assumed prebiotic conditions, bypass the hindrance of homochiral growth.

A test of improved force field parameters for urea: molecular-dynamics simulations of urea crystals

2012 ◽  
Vol 18 (8) ◽  
pp. 3455-3466 ◽  
Author(s):  
Gül Altınbaş Özpınar ◽  
Frank R. Beierlein ◽  
Wolfgang Peukert ◽  
Dirk Zahn ◽  
Timothy Clark
Keyword(s):  
Molecular Dynamics ◽  
Force Field ◽  
Molecular Dynamics Simulations ◽  
Force Field Parameters ◽  
Dynamics Simulations

scholarly journals Molecular Dynamics Simulations of CO2Molecules in ZIF-11 Using Refined AMBER Force Field

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
W. Wongsinlatam ◽  
T. Remsungnen
Keyword(s):  
Molecular Dynamics ◽  
Force Field ◽  
Molecular Dynamics Simulations ◽  
Distribution Functions ◽  
Binding Energies ◽  
Hydrogen Atoms ◽  
Amber Force Field ◽  
Bonding Parameters ◽  
Flexible Framework ◽  
Dynamics Simulations

Nonbonding parameters of AMBER force field have been refined based onab initiobinding energies of CO2–[C7H5N2]−complexes. The energy and geometry scaling factors are obtained to be 1.2 and 0.9 forεandσparameters, respectively. Molecular dynamics simulations of CO2molecules in rigid framework ZIF-11, have then been performed using original AMBER parameters (SIM I) and refined parameters (SIM II), respectively. The site-site radial distribution functions and the molecular distribution plots simulations indicate that all hydrogen atoms are favored binding site of CO2molecules. One slight but notable difference is that CO2molecules are mostly located around and closer to hydrogen atom of imidazolate ring in SIM II than those found in SIM I. The Zn-Zn and Zn-N RDFs in free flexible framework simulation (SIM III) show validity of adapting AMBER bonding parameters. Due to the limitations of computing resources and times in this study, the results of flexible framework simulation using refined nonbonding AMBER parameters (SIM IV) are not much different from those obtained in SIM II.

AMBER Force Field Parameters for Cobalt-Containing Biological Systems: A Systematic Derivation Study

2020 ◽  
Vol 124 (5) ◽  
pp. 777-787
Author(s):  
Hamed Haghshenas ◽  
Hossein Tavakol ◽  
Bita Kaviani ◽  
Gholamhossein Mohammadnezhad
Keyword(s):  
Force Field ◽  
Biological Systems ◽  
Amber Force Field ◽  
Force Field Parameters ◽  
Systematic Derivation
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