Hydration free energies of amino acids: why side chain analog data are not enough

G König, S Boresch - The Journal of Physical Chemistry B, 2009 - ACS Publications
Using molecular dynamics based free energy simulations, we computed relative solvation
free energies for pairs of N-acetyl-methylamide amino acids (Ala-Ser, Val-Thr, Phe-Tyr, Val …

Stabilization of α-helices by dipole− dipole interactions within α-helices

C Park, WA Goddard - The Journal of Physical Chemistry B, 2000 - ACS Publications
Including solvation effects (in the Poisson− Boltzmann continuum solvent approximation) we
report ab initio quantum mechanical calculations (HF/6-31G**) on the conformational …

Hydrogen-bond kinetics in the solvation shell of a polypeptide

H Xu, BJ Berne - The Journal of Physical Chemistry B, 2001 - ACS Publications
Analysis of a series of molecular dynamics simulations reveals that the kinetics of breaking
and forming water− water hydrogen bonds is slower in the first solvation shell of a 16 …

Isolated monohydrates of a model peptide chain: Effect of a first water molecule on the secondary structure of a capped phenylalanine

HS Biswal, Y Loquais, B Tardivel… - Journal of the …, 2011 - ACS Publications
The formation of monohydrates of capped phenylalanine model peptides, CH3-CO-Phe-
NH2 and CH3-CO-Phe-NH-CH3, in a supersonic expansion has been investigated using …

Comparison of continuum and explicit models of solvation: potentials of mean force for alanine dipeptide

TJ Marrone, MK Gilson… - The Journal of Physical …, 1996 - ACS Publications
We compute the potential of mean force (PMF) around the ϕ and ψ torsions of alanine
dipeptide with a Poisson− Boltzmann (PB) method and compare these results to simulations …

Theoretical evidence for water insertion in. alpha.-helix bending: molecular dynamics of Gly30 and Ala30 in vacuo and in solution

FM DiCapua, S Swaminathan… - Journal of the American …, 1991 - ACS Publications
In protein crystal structures, orderedwater molecules have been frequently observed at
instances where a-helices bend or fold. A series of molecular dynamics (MD) simulations …

Solvation free energy of amino acids and side-chain analogues

J Chang, AM Lenhoff, SI Sandler - The Journal of Physical …, 2007 - ACS Publications
The solvation free energies of amino acids and their side-chain analogues in water and
cyclohexane are calculated by using Monte Carlo simulation. The molecular interactions are …

β-hairpin folding mechanism of a nine-residue peptide revealed from molecular dynamics simulations in explicit water

X Wu, BR Brooks - Biophysical journal, 2004 - cell.com
The β-hairpin fold mechanism of a nine-residue peptide, which is modified from the β-hairpin
of α-amylase inhibitor tendamistat (residues 15–23), is studied through direct folding …

Can a continuum solvent model reproduce the free energy landscape of a β-hairpin folding in water?

R Zhou, BJ Berne - Proceedings of the National Academy of …, 2002 - National Acad Sciences
The folding free energy landscape of the C-terminal β-hairpin of protein G is explored using
the surface-generalized Born (SGB) implicit solvent model, and the results are compared …

Dehydration-driven solvent exposure of hydrophobic surfaces as a driving force in peptide folding

I Daidone, MB Ulmschneider… - Proceedings of the …, 2007 - National Acad Sciences
Recent work has shown that the nature of hydration of pure hydrophobic surfaces changes
with the length scale considered: water hydrogen-bonding networks adapt to small exposed …