Related Experiment Video
Updated: Jul 9, 2025
07:26
Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
Published on: November 21, 2013
12.9K
Self-Assembled Protein Nanostructures via Irreversible Peptide Assembly
1Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea.
ACS Macro Letters
|November 30, 2023
Summary
Researchers developed a simpler method for creating self-assembled protein nanostructures (SPrNs). This strategy uses self-assembled peptide nanostructures (SPeNs) as building blocks, enabling easier fabrication of complex protein assemblies.
Area of Science:
- Biotechnology
- Materials Science
- Protein Engineering
Background:
- Protein quaternary structure enhances monomeric protein functionality.
- Self-assembled protein nanostructures (SPrNs) offer advanced protein complexity and functionality.
- Fabricating SPrNs is challenging, often requiring complex computational design.
Purpose of the Study:
- To devise a simplified and intuitive strategy for SPrN formation.
- To overcome the fabrication challenges associated with SPrNs.
- To enable broader applicability of SPrN technology.
Main Methods:
- Adoption of an irreversible self-assembled peptide nanostructure (SPeN) process.
- A three-step strategy: SPeN formation (equilibrium), covalent capture of SPeNs (irreversible), and SPrN assembly via protein-peptide interactions (equilibrium).
- Utilizing SPeNs as primary building blocks for SPrN fabrication.
Main Results:
- Successful fabrication of SPrNs with protein components approximately 9 times larger than the self-assembling peptide.
- Demonstrated the use of irreversible SPeNs as foundational units for superstructure assembly.
- Achieved a fabrication strategy conceptually similar to SPeN fabrication.
Conclusions:
- The developed strategy simplifies SPrN fabrication, making it more intuitive.
- The method is potentially applicable to a wide range of soluble proteins.
- This approach facilitates the creation of complex protein-based nanostructures and superstructures.
Related Concept Videos
02:41Protein Complex Assembly
10.6K
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
10.6K
01:25Protein Folding
8.0K
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...
8.0K
01:13Protein Organization
138.0K
Overview
138.0K
01:18Assembly of Cytoskeletal Filaments
20.5K
Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate with other similar filaments to form rigid structures. Microfilaments, made of actin monomers, rely on actin-binding proteins to form bundles and create networks of individual actin filaments. Microtubules rely on microtubule-associated proteins (MAPs) to form sturdy cylindrical structures. However, the proteins involved in forming complex...
20.5K
03:03Amyloid Fibrils
9.6K
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
9.6K
02:15Protein and Protein Structure
79.6K
Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...
A protein's shape is critical to its function. For example, an enzyme...
79.6K