TY - JOUR
TI - “Glass transition” in peptides: Temperature and pressure effects
AU - P. Papadopoulos
AU - G. Floudas
AU - I. Schnell
AU - H.-A. Klok
AU - T. Aliferis
AU - H. Iatrou
AU - N. Hadjichristidis
JO - The Journal of Chemical Physics
PY - 2005
VL - 122
TODO - 22
SP - 224906
PB - AIP Publishing
SN - null
TODO - 10.1063/1.1931657
TODO - Glass-forming liquids;  Peptides;  Secondary structures;  Thermal energy, Amino acids;  Biopolymers;  Conformations;  Fourier transform infrared spectroscopy;  Molecular structure;  Nuclear magnetic resonance;  Polymerization;  Pressure effects;  Temperature distribution, Glass transition
TODO - We report on the origin of the liquid-to-glass transition in a series of oligopeptides of γ -benzyl- L -glutamate up to the polymer (PBLG), and in Poly- Z - L -lysine (PZLL) and Polyglycine (PGly) using dielectric spectroscopy as a function of temperature and pressure. We show that temperature is the dominant control variable of the dynamics associated with the peptidic "glass transition." This is an intrinsic feature of the peptide dynamics, irrespective of the type of amino acid and of the peptide secondary structure. The influence of the type of secondary structure (α helix vs Β sheet) on the liquid-to-glass dynamics is discussed. © 2005 American Institute of Physics.
ER -