Glycine in water favors the polyproline II state

B Andrews, S Zhang, R Schweitzer-Stenner, B Urbanc - Biomolecules, 2020 - mdpi.com
Conformational preferences of amino acid residues in water are determined by the
backbone and side-chain properties. Alanine is known for its high polyproline II (pPII) …

The alanine dipeptide free energy surface in solution

PE Smith - The Journal of chemical physics, 1999 - pubs.aip.org
Molecular dynamics (MD) simulations have been used to determine the two dimensional
free energy surface of the alanine dipeptide in solution. The intramolecular dipeptide …

A microscopic view of peptide and protein solvation

DAC Beck, DOV Alonso, V Daggett - Biophysical chemistry, 2002 - Elsevier
The structure and dynamics of the water hydrating peptides and proteins are examined here
at atomic resolution via molecular dynamics simulations. Detailed solvation density and …

Validation of an all-atom protein force field: from dipeptides to larger peptides

S Gnanakaran, AE Garcia - The Journal of Physical Chemistry B, 2003 - ACS Publications
New experimental techniques are capable of determining the relative population of
conformations adopted by short alanine peptides in water. Most of the existing all-atom force …

Energy landscape of a small peptide revealed by dihedral angle principal component analysis

Y Mu, PH Nguyen, G Stock - Proteins: Structure, Function, and …, 2005 - Wiley Online Library
A 100 ns molecular dynamics simulation of penta‐alanine in explicit water is performed to
study the reversible folding and unfolding of the peptide. Employing a standard principal …

Evidence for microscopic, long-range hydration forces for a hydrophobic amino acid

A Pertsemlidis, AK Soper… - Proceedings of the …, 1999 - National Acad Sciences
We have combined neutron solution scattering experiments with molecular dynamics
simulation to isolate an excess experimental signal that is caused solely by N-acetyl-leucine …

Reverse turns in blocked dipeptides are intrinsically unstable in water

DJ Tobias, SF Sneddon, CL Brooks III - Journal of molecular biology, 1990 - Elsevier
We have carried out molecular dynamics simulations to study the conformational equilibria
of two blocked dipeptides, Ac-Ala-Ala-NHMe and trans-Ac-Pro-Ala-NHMe, in water (Ac …

Explicit water models affect the specific solvation and dynamics of unfolded peptides while the conformational behavior and flexibility of folded peptides remain intact

P Florová, P Sklenovsky, P Banas… - Journal of chemical …, 2010 - ACS Publications
Conventional molecular dynamics simulations on 50 ns to 1 μs time scales were used to
study the effects of explicit solvent models on the conformational behavior and solvation of …

Physical reasons for the unusual α-helix stabilization afforded by charged or neutral polar residues in alanine-rich peptides

JA Vila, DR Ripoll… - Proceedings of the …, 2000 - National Acad Sciences
We have carried out conformational energy calculations on alanine-based copolymers with
the sequence Ac-AAAAAXAAAA-NH2 in water, where X stands for lysine or glutamine, to …

Free energy landscapes of peptides by enhanced conformational sampling

N Nakajima, J Higo, A Kidera, H Nakamura - Journal of molecular biology, 2000 - Elsevier
The free energy landscapes of peptide conformations in water have been observed by the
enhanced conformational sampling method, applying the selectively enhanced …