Journal ArticleDOI
Self-assembling Behavior of Designer Lipid-like Peptides
Steve J. Yang,Shuguang Zhang +1 more
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TLDR
A class of lipid-like peptides that are less than 10 natural amino acids in length and structurally amphiphilic exhibit self-assembling behavior akin to some lipids, with distinct critical aggregate concentration values and sequestration of the hydrophobic tails away from water.Abstract:
Even though enormous progress has been made in our understanding of soluble proteins and enzymes, our knowledge of membrane proteins, particularly integral membrane proteins, still lags far behind. Although a large number of chemical detergents and lipids are available, so far they are inadequate for tackling the problem of solubilizing and stabilizing membrane proteins outside of the lipid bilayer. Thus, the development of new detergents and lipid-like molecules is an important prerequisite for solving those problems. We have designed a class of lipid-like peptides that are less than 10 natural amino acids in length and structurally amphiphilic. Each peptide consists of a hydrophilic head-group composed of charged or polar residues and a hydrophobic tail consisting of a string of hydrophobic amino acids. In aqueous solutions, they self-organize to form different supramolecular structures such as vesicles, nanotubes or membranes. It has been shown that they stabilize the functions of several membrane prot...read more
Citations
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Tracking morphologies at the nanoscale: Self-assembly of an amphiphilic designer peptide into a double helix superstructure
Karin,Kornmueller,Ilse,Letofsky-Papst,Kerstin,Gradauer,Christian,Mikl,Fernando,Cacho-Nerin,Mario,Leypold,Walter,Keller,Gerd,Leitinger,Heinz,Amenitsch,Ruth,Prassl +19 more
TL;DR: A cone-shaped amphiphilic designer peptide structure characterized by a tight intertwisting of two individual helices, resulting in a periodic pitch size over their total lengths of several hundred nanometers holds promise as a building block for next-generation nanostructured biomaterials.
Journal ArticleDOI
Peptides at the Interface: Self-Assembly of Amphiphilic Designer Peptides and Their Membrane Interaction Propensity.
Karin Kornmueller,Bernhard Lehofer,Claudia Meindl,Eleonore Fröhlich,Gerd Leitinger,Heinz Amenitsch,Ruth Prassl +6 more
TL;DR: The results suggest that membrane activity critically depends on the peptide’s inherent ability to form highly cohesive supramolecular structures.
Journal ArticleDOI
PEGylation affects the self-assembling behaviour of amphiphilic octapeptides
Diego Romano Perinelli,Mario Campana,Ishwar Singh,Driton Vllasaliu,James Doutch,Giovanni Filippo Palmieri,Luca Casettari +6 more
TL;DR: Results suggest that self-assembling behaviour of amphiphilic octapeptides can be modified by PEGylation, with a great potential impact for the future applications of these nanomaterials.
Journal ArticleDOI
Shuffled lipidation pattern and degree of lipidation determines the membrane interaction behavior of a linear cationic membrane-active peptide.
Sofie Fogh Hedegaard,Dennis Skjøth Bruhn,Himanshu Khandelia,Marité Cárdenas,Hanne Mørck Nielsen +4 more
TL;DR: The results demonstrate that the impact exerted by the CPP on the membrane is notably affected by positioning and especially the degree of lipidation, which might influence the properties of CPPs as functional excipients.
References
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Journal ArticleDOI
Theory of self-assembly of hydrocarbon amphiphiles into micelles and bilayers
TL;DR: In this paper, a simple theory is developed that accounts for many of the observed physical properties of micelles, both globular and rod-like, and of bilayer vesicles composed of ionic or zwitterionic amphiphiles.
Journal ArticleDOI
Environmental effects on vibronic band intensities in pyrene monomer fluorescence and their application in studies of micellar systems
TL;DR: In this article, it was shown that in the presence of polar solvents, there is a significant enhancement in the intensity of the 0-0 vibronic band at the expense of other bands.
Journal ArticleDOI
Genome-wide analysis of integral membrane proteins from eubacterial, archaean, and eukaryotic organisms
Erik Wallin,G. von Heijne +1 more
TL;DR: Detailed statistical analyses of integral membrane proteins of the helix‐bundle class from eubacterial, archaean, and eukaryotic organisms for which genome‐wide sequence data are available suggest that uni‐cellular organisms appear to prefer proteins with 6 and 12 transmembrane segments, whereas Caenorhabditis elegans and Homo sapiens have a slight preference for proteins with seven transmemBRane segments.
Book
Biomembranes: Molecular Structure and Function
TL;DR: The goal of this series is to pinpoint areas of chemistry where recent progress has outpaced what is covered in any available textbooks, and then seek out and persuade experts in these fields to produce relatively concise but instructive introductions to their fields.
Journal ArticleDOI
Interaction of membrane proteins and lipids with solubilizing detergents.
TL;DR: The nature of detergent binding by the membrane from a noncooperative to a cooperative interaction already below the critical micellar concentration is considered and it is concluded that in general binding as a monolayer ring, rather than as a micelle, is the most probable mechanism.