Spectroscopic Evidence for the Formation of Helical Structures in Gas-Phase Short Peptide Chains†

2007 ◽  
Vol 111 (31) ◽  
pp. 7347-7354 ◽  
Author(s):  
Valérie Brenner ◽  
François Piuzzi ◽  
Iliana Dimicoli ◽  
Benjamin Tardivel ◽  
Michel Mons
Keyword(s):  
Gas Phase ◽  
Helical Structures ◽  
Short Peptide ◽  
Spectroscopic Evidence

Spectroscopic evidence for a gas-phase librating G-quartet–Na+ complex

2014 ◽  
Vol 50 (94) ◽  
pp. 14767-14770 ◽  
Author(s):  
C. Fraschetti ◽  
M. Montagna ◽  
L. Guarcini ◽  
L. Guidoni ◽  
A. Filippi
Keyword(s):  
Gas Phase ◽  
Room Temperature ◽  
Spectroscopic Evidence

The Na+–G4 adduct exists as a mixture of two metastable populations, rapidly interconverting at room temperature.

scholarly journals Secondary structures of short peptide chains in the gas phase:  Double resonance spectroscopy of protected dipeptides

2005 ◽  
Vol 122 (5) ◽  
pp. 054317 ◽  
Author(s):  
Wutharath Chin ◽  
Jean-Pierre Dognon ◽  
Clélia Canuel ◽  
François Piuzzi ◽  
Iliana Dimicoli ◽  
...  
Keyword(s):  
Gas Phase ◽  
Double Resonance ◽  
Secondary Structures ◽  
Resonance Spectroscopy ◽  
Short Peptide ◽  
Double Resonance Spectroscopy

Spectroscopic evidence of α-methylbenzyl radical in the gas phase

2008 ◽  
Vol 465 (4-6) ◽  
pp. 193-196 ◽  
Author(s):  
Gi Woo Lee ◽  
Hyeon Geun Ahn ◽  
Tae Kyu Kim ◽  
Sang Kuk Lee
Keyword(s):  
Gas Phase ◽  
Spectroscopic Evidence

Chirality-Controlled Formation of β-Turn Secondary Structures in Short Peptide Chains: Gas-Phase Experiment versus Quantum Chemistry

2007 ◽  
Vol 46 (14) ◽  
pp. 2463-2466 ◽  
Author(s):  
Valérie Brenner ◽  
François Piuzzi ◽  
Iliana Dimicoli ◽  
Benjamin Tardivel ◽  
Michel Mons
Keyword(s):  
Quantum Chemistry ◽  
Gas Phase ◽  
Secondary Structures ◽  
Short Peptide ◽  
Experiment Versus

Dimerization and conformation-related free energy landscapes of dye-tagged amyloid-β12–28linked to FRET experiments

2017 ◽  
Vol 19 (14) ◽  
pp. 9470-9477 ◽  
Author(s):  
Alexander Kulesza ◽  
Steven Daly ◽  
Philippe Dugourd
Keyword(s):  
Free Energy ◽  
Electrospray Ionization ◽  
Gas Phase ◽  
Aβ Peptide ◽  
Energy Landscapes ◽  
Equilibrium Conditions ◽  
Short Peptide ◽  
Free Energy Landscapes ◽  
Non Equilibrium ◽  
Dimer Models

The free energy landscapes of Aβ-peptide dimer models under different prototype conditions support the hypothesis that the gas-phase action-FRET measurement after electrospray ionization operates under non-equilibrium conditions, with a memory of the solution conditions – even for the dimer of this relatively short peptide.

Gas-Phase Folding of a Prototypical Protonated Pentapeptide: Spectroscopic Evidence for Formation of a Charge-Stabilized β-Hairpin

2016 ◽  
Vol 138 (8) ◽  
pp. 2849-2857 ◽  
Author(s):  
Nicole L. Burke ◽  
Andrew F. DeBlase ◽  
James G. Redwine ◽  
John R. Hopkins ◽  
Scott A. McLuckey ◽  
...  
Keyword(s):  
Gas Phase ◽  
Spectroscopic Evidence ◽  
A Charge

Computational and ultraviolet photoelectron spectroscopic evidence that (Z)-2-methyl-1,3-pentadiene prefers twisted s-cis conformers in the gas phase

1992 ◽  
Vol 70 (7) ◽  
pp. 1971-1977 ◽  
Author(s):  
Nick Henry Werstiuk ◽  
George Timmins ◽  
Jiangong Ma ◽  
Timothy A. Wildman
Keyword(s):  
Potential Energy ◽  
Gas Phase ◽  
Computational Methods ◽  
Potential Energy Surfaces ◽  
Spectroscopic Evidence ◽  
Orbital Energies ◽  
Trans Conformer ◽  
Energy Surfaces ◽  
Good Agreement

A redetermination of the ultraviolet photoelectron (pe) spectrum of (Z)-2-methyl-1,3-pentadiene has led to a correction of the published spectrum. By studying (Z)-2-methyl-1,3,-pentadiene (1a) and (E)-2-methyl-1,3-pentadiene (1b) with MMX, MNDO, AM1, and abinitio MO computational methods and pe spectroscopy, we have shown that a combination of these methods provides useful insights on the conformational behaviour of methyl-substituted 1,3-dienes in the gas phase. Synthetic pe spectra, derived from the computed potential energy surfaces and angle-dependent orbital energies, are in good agreement with experiment. Thus, the E isomer prefers the s-trans conformer but the Z isomer prefers twisted s-cis conformations in the gas phase.

Chirality-Controlled Formation of β-Turn Secondary Structures in Short Peptide Chains: Gas-Phase Experiment versus Quantum Chemistry

2007 ◽  
Vol 119 (14) ◽  
pp. 2515-2518 ◽  
Author(s):  
Valérie Brenner ◽  
François Piuzzi ◽  
Iliana Dimicoli ◽  
Benjamin Tardivel ◽  
Michel Mons
Keyword(s):  
Quantum Chemistry ◽  
Gas Phase ◽  
Secondary Structures ◽  
Short Peptide ◽  
Experiment Versus

Gas phase folding of an (Ala)4 neutral peptide chain: spectroscopic evidence for the formation of a β-hairpin H-bonding pattern

2009 ◽  
Vol 11 (48) ◽  
pp. 11385 ◽  
Author(s):  
Eric Gloaguen ◽  
Rodolphe Pollet ◽  
François Piuzzi ◽  
Benjamin Tardivel ◽  
Michel Mons
Keyword(s):  
Gas Phase ◽  
Peptide Chain ◽  
Spectroscopic Evidence ◽  
Neutral Peptide
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