Native like helices in a specially designed β peptide in the gas phase
Literature Information
Franziska Schubert, Stephan Warnke, Mario Salwiczek, Beate Koksch, Gert von Helden, Carsten Baldauf, Matthias Scheffler
In the natural peptides, helices are stabilized by hydrogen bonds that point backward along the sequence direction. Until now, there is only little evidence for the existence of analogous structures in oligomers of conformationally unrestricted β amino acids. We specifically designed the β peptide Ac-(β2hAla)6-LysH+ to form native like helical structures in the gas phase. The design follows the known properties of the peptide Ac-Ala6-LysH+ that forms a α helix in isolation. We perform ion-mobility mass-spectrometry and vibrational spectroscopy in the gas phase, combined with state-of-the-art density-functional theory simulations of these molecular systems in order to characterize their structure. We can show that the straightforward exchange of alanine residues for the homologous β amino acids generates a system that is generally capable of adopting native like helices with backward oriented H-bonds. By pushing the limits of theory and experiments, we show that one cannot assign a single preferred structure type due to the densely populated energy landscape and present an interpretation of the data that suggests an equilibrium of three helical structures.
Related Literature
Modulation of the electronic and mechanical properties of phagraphene via hydrogenation and fluorination
Houyang Chen
DOI: 10.1039/C6CP08621G
Phase diagram of water–methane by first-principles thermodynamics: discovery of MH-IV and MH-V hydrates
Xiaoxiao Cao, Yingying Huang, Xue Jiang, Yan Su, Jijun Zhao
DOI: 10.1039/C7CP01147D
The role of sulfur oxidation in controlling the electronic properties of sulfur-containing host molecules for phosphorescent organic light-emitting diodes
DOI: 10.1039/C7CP00828G
Tunable photoluminescence and room temperature ferromagnetism of In2S3:Dy3+,Tb3+ nanoparticles
Zhifang Li, Tianye Yang, Qi Zhao, Mingzhe Zhang
DOI: 10.1039/C7CP02481A
CH stretching excitation promotes its cleavage in the F + CHD3(ν1 = 1) → HF + CD3 reaction at low collision energies
Jiayue Yang, Bo Jiang
DOI: 10.1039/C7CP01428G
Local rotational symmetry in the packing of uniform spheres
Z. A. Tian, K. J. Dong, A. B. Yu
DOI: 10.1039/C7CP01152K
Electron transfer in silicon-bridged adjacent chromophores: the source for blue-green emission
Malgorzata Bayda, Gonzalo Angulo, Jerzy Karolczak, Jacek Koput, Jacek Dobkowski, Bronislaw Marciniak
DOI: 10.1039/C7CP00590C
Delineating the role of ripples on the thermal expansion of 2D honeycomb materials: graphene, 2D h-BN and monolayer (ML)-MoS2
P. Anees, M. C. Valsakumar, B. K. Panigrahi
DOI: 10.1039/C6CP08635G
You might also like
How should waste containing N-Methoxy-N-methyl-1,3-thiazole-5-carboxamide (CAS: 898825-89-3) be handled?
Waste containing N-Methoxy-N-methyl-1,3-thiazole-5-carboxamide (CAS: 898825-89-3...
How should N-(4-Biphenylyl)dibenzo[b,d]furan-4-amine (CAS: 1318338-47-4) be stored?
N-(4-Biphenylyl)dibenzo[b,d]furan-4-amine should be stored in a tightly sealed c...
What is the market or research trend for 3-Acetamido-5-amino-2,4,6-triiodobenzoic acid (CAS: 1713-07-1)?
The market for 3-Acetamido-5-amino-2,4,6-triiodobenzoic acid (CAS: 1713-07-1) is...
How should Benzyl 2-O-acetyl-3,4,6-tri-O-benzyl-beta-D-galactopyranoside (CAS: 61820-03-9) be stored?
Benzyl 2-O-acetyl-3,4,6-tri-O-benzyl-beta-D-galactopyranoside (CAS: 61820-03-9) ...
What regulatory guidelines apply to 2-Ethylpiperazine dihydrochloride (CAS: 438050-52-3)?
2-Ethylpiperazine dihydrochloride (CAS: 438050-52-3) is regulated under the Glob...
What regulatory guidelines apply to 1,1'-[1,3-Phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione) (CAS: 119462-56-5)?
1,1'-[1,3-Phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione) (CAS: 11946...
Are there alternatives to 5-Fluoro-2-(1-pyrrolidinyl)pyridine (CAS: 1287217-79-1) in synthesis?
Several alternatives can be used in the synthesis of 5-Fluoro-2-(1-pyrrolidinyl)...
What precautions should be taken when handling 1-((2R,3R,4R,5R)-5-((bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-4-hydroxy-3-methoxytetrahydrofuran-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione (CAS: 153631-19-7)?
Proper personal protective equipment (PPE) must be worn when handling this compo...
What precautions should be taken when handling 6-Bromoimidazo[1,2-a]pyridin-8-amine (CAS: 676371-00-9)?
When handling 6-Bromoimidazo[1,2-a]pyridin-8-amine, it is important to wear appr...
Are there alternatives to (2S,4R)-4-(4-Nitrobenzyl)pyrrolidine-2-carboxylic acid hydrochloride (CAS: 1049740-22-8) in synthesis?
Alternatives to (2S,4R)-4-(4-Nitrobenzyl)pyrrolidine-2-carboxylic acid hydrochlo...
Source Journal
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.











![5-Acetyl-2,3-dihydrobenzo[b]furan structure 5-Acetyl-2,3-dihydrobenzo[b]furan structure](https://static.chemtradehub.com/structs/908/90843-31-5-eea4.webp)
![1-Naphthalenesulfonic acid, 2-[(2-hydroxy-1-naphthalenyl)azo]-, bariumsalt (2:1) structure 1-Naphthalenesulfonic acid, 2-[(2-hydroxy-1-naphthalenyl)azo]-, bariumsalt (2:1) structure](https://static.chemtradehub.com/structs/110/1103-38-4-0b33.webp)

