Helix formation and stability in membranes

MJ McKay, F Afrose, RE Koeppe II… - Biochimica et Biophysica …, 2018 - Elsevier
In this article we review current understanding of basic principles for the folding of
membrane proteins, focusing on the more abundant alpha-helical class. Membrane …

Regulation of gramicidin channel function solely by changes in lipid intrinsic curvature

AM Maer, R Rusinova, LL Providence… - Frontiers in …, 2022 - frontiersin.org
Membrane protein function is regulated by the lipid bilayer composition. In many cases the
changes in function correlate with changes in the lipid intrinsic curvature (c 0), and c 0 is …

Design of Chiral β‐Double Helices from γ‐Peptide Foldamers

S Pahan, S Dey, G George, SP Mahapatra… - Angewandte …, 2024 - Wiley Online Library
Chirality is ubiquitous in nature, and homochirality is manifested in many biomolecules.
Although β‐double helices are rare in peptides and proteins, they consist of alternating L …

Membrane elastic deformations modulate gramicidin A transbilayer dimerization and lateral clustering

OV Kondrashov, TR Galimzyanov, KV Pavlov… - Biophysical journal, 2018 - cell.com
Gramicidin A (gA) is a short β-helical peptide known to form conducting channels in lipid
membranes because of transbilayer dimerization. The gA conducting dimer, being shorter …

Spontaneous curvature generation by peptides in asymmetric bilayers

S Park, A Rice, W Im, RW Pastor - Biophysical Journal, 2024 - cell.com
1Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA,
USA, 2Department of Biochemistry and Biophysics, Washington University in St. Louis, St …

Atomistic characterization of gramicidin channel formation

D Sun, S He, WFD Bennett, CL Bilodeau… - Journal of Chemical …, 2020 - ACS Publications
We investigated gramicidin A (gA) subunit dimerization in lipid bilayers using microsecond-
long replica-exchange umbrella sampling simulations, millisecond-long unbiased molecular …

Membrane bending moduli of coexisting liquid phases containing transmembrane peptide

RD Usery, TA Enoki, SP Wickramasinghe, VP Nguyen… - Biophysical journal, 2018 - cell.com
A number of highly curved membranes in vivo, such as epithelial cell microvilli, have the
relatively high sphingolipid content associated with" raft-like" composition. Given the much …

Molecular mechanism for gramicidin dimerization and dissociation in bilayers of different thickness

D Sun, TA Peyear, WFD Bennett, OS Andersen… - Biophysical …, 2019 - cell.com
Membrane protein functions can be altered by subtle changes in the host lipid bilayer
physical properties. Gramicidin channels have emerged as a powerful system for elucidating …

Quantitative characterization of protein–lipid interactions by free energy simulation between binary bilayers

S Park, MS Yeom, OS Andersen… - Journal of chemical …, 2019 - ACS Publications
Using a recently developed binary bilayer system (BBS) consisting of two patches of laterally
contacting bilayers, umbrella sampling molecular dynamics (MD) simulations were …

Curvature energetics determined by alchemical simulation on four topologically distinct lipid phases

AH Beaven, C Arnarez, E Lyman… - The Journal of …, 2021 - ACS Publications
The relative curvature energetics of two lipids are tested using thermodynamic integration
(TI) on four topologically distinct lipid phases. Simulations use TI to switch between choline …