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Analyzing heat capacity profiles of peptide-containing membranes: Cluster formation of gramicidin A
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ABSTRACT The analysis of peptide and protein partitioning in lipid membranes is of high relevance for the understanding of biomembrane function. We used statistical thermodynamics analysis to demonstrate the effect of peptide mixing behavior on heat capacity profiles of lipid membranes with the aim to predict peptide aggregation from c^sub P^-profiles. This analysis was applied to interpret calorimetric data on the interaction of the antibiotic peptide gramicidin A with lipid membranes. The shape of the heat capacity profiles was found to be consistent with peptide clustering in both gel and ...
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Relaxation kinetics of lipid membranes and its relation to the heat capacity
; ...relaxation behavior of lipid membranes close to the...proportional to the heat capacity. We provide a...state changes of lipid membranes. Since the classical...of cooperative lipid melting events...to the excess heat capacity and can therefore...
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Single GUV Method Reveals Interaction of Tea Catechin (-)-Epigallocatechin Gallate with Lipid Membranes
; ...activity. Several studies indicate that lipid membranes are one of the targets of the antibacterial...the interaction of catechins with lipid membranes remain unclear. In this study, we...single GUV method. We prepared GUVs of lipid membranes of egg PC in a physiological ion ...
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Retrieval of Model Grid-Scale Heat Capacity Using Geostationary Satellite Products. Part I: First Case-Study Application
; ...the effective model grid-scale bulk heat capacity. Yet, this model parameter is uncertain...methods for estimating the grid-scale heat capacity involve the areal/volume weighting of heat capacity (resistance) of various, often ill...
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Hydration heat capacity of nucleic acid constituents determined from the random network model
; ...accessible surface area (ASA) models of heat capacity. In ASA models, nitrogen, oxygen, and...contributor to the large decrease in heat capacity seen in experiments. INTRODUCTION An...accompanied by very large negative heat capacity changes ((delta)Cp), on the order of...
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A Molecular View on the Interaction of the Trojan Peptide Penetratin with the Polar Interface of Lipid Bilayers
; ...information before penetratin binding to lipid membranes with molecular resolution. The amide...dimyristoylphosphatidylcholine and of anionic lipid membranes composed of dioleoylphosphatidylcholine...that affect the peptide binding to lipid membranes and its permeation through the ...
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Toward the physical basis of thermophilic proteins: Linking of enriched polar interactions and reduced heat capacity of unfolding
; ...Another tendency, featuring lower heat capacity of unfolding ((Delta)C^sub p^) than...thermodynamics of solvation of ions: Part 1. The heat capacity of hydration at 298.15 K. J. Chem...1998. Electrostatic contributions to heat capacity changes of DNA-ligand binding. Biophys...
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A Critical Reassessment of Penetratin Translocation Across Lipid Membranes
; ...peptide across negatively charged lipid membranes. Confocal laser scanning microscopy...fluorescence spectroscopy on black lipid membranes confirmed this finding, which was...direct permeation of penetratin across lipid membranes without permeabilization (8,9). More...
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Effects of the eukaryotic pore-forming cytolysin equinatoxin II on lipid membranes and the role of sphingomyelin
; ...pores in sphingomyelin-containing lipid membranes. The perturbation by EqtII of model lipid membranes composed of dimyristoylphosphatidycholine...in sphingomyelin-containing mixed lipid membranes compared with pure phosphatidylcholine...
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Permeability of Psoralen Derivatives in Lipid Membranes
; ...saturated and partially unsaturated lipid membranes. Within the simulations, strong accumulation...cross-links between forucoumarins and lipid membranes are well known to occur (6,7), and...complexes found were to unsaturated lipid membranes, even higher than the observed ...
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Colloid Adsorption onto Responsive Membranes
; ...Adsorption of biomacromolecules onto lipid membranes is of great biological and technological...packaging in viral capsids with internal lipid membranes (1), DNA adsorption onto liposomes...using various model systems. However, lipid membranes are not static, Hat homogeneous ...
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