Related Experiment Video
Updated: Jun 10, 2026
07:26
Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
Published on: November 21, 2013
Power struggles in peptide-amphiphile nanostructures
Frank Versluis1, Hana Robson Marsden, Alexander Kros
1Leiden Institute of Chemistry, University Leiden, P.O. Box 9502, 2300 RA, Leiden, The Netherlands.
Chemical Society Reviews
|July 21, 2010
Summary
Peptide amphiphiles (PAs) self-assemble into functional nanostructures by balancing attractive and repulsive forces. This process allows for control over peptide secondary structure and nanostructure properties for diverse applications.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Biotechnology
Background:
- Peptide amphiphiles (PAs) mimic natural proteins for creating functional nanostructures.
- PAs consist of hydrophilic peptide segments and hydrophobic elements, driving self-assembly in aqueous solutions.
Purpose of the Study:
- To review the forces governing peptide amphiphile self-assembly.
- To explore the relationship between hydrophobic blocks, peptide secondary structure, and aggregate properties.
- To highlight the potential of PAs for creating well-defined, functional nanostructures.
Main Methods:
- Discussion of attractive forces (hydrophobic interactions, hydrogen bonding, electrostatic attraction).
- Analysis of repulsive forces (electrostatic repulsion, mechanical forces).
- Examination of the influence of these forces on peptide secondary structure and aggregate morphology.
Main Results:
- The balance of forces dictates the secondary structure of the peptide segment and the morphology of the self-assembled nanostructures.
- Peptides exhibit enhanced secondary structure at interfaces within assemblies.
- Controlled self-assembly enables the creation of structurally defined materials with tunable functionalities.
Conclusions:
- Understanding and controlling inter- and intramolecular forces are key to designing peptide amphiphile nanostructures.
- PA self-assembly offers a versatile platform for developing advanced functional materials.
- Applications of these peptide amphiphile nanostructures are briefly discussed.
Related Concept Videos
02:43Peptide Bonds
A peptide bond covalently attaches amino acids through a dehydration reaction. One amino acid's carboxyl group and another amino acid's amino group combine, releasing a water molecule. The resulting bond is the peptide bond. The products that such linkages form are peptides. As more amino acids join this growing chain, the resulting chain is a polypeptide. Each polypeptide has a free amino group at one end. This end has the N-terminal, or the amino-terminal, and the other end has a free...
01:24Protein Organization
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence.
The primary structure of a protein is its amino acid sequence.
01:13Protein Organization
Overview
01:25Protein Folding
Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
01:22Protein Folding
Overview
01:30Micelles
Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...