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Related Concept Videos

Protein Complex Assembly02:41

Protein Complex Assembly

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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.
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Assembly of Cytoskeletal Filaments01:18

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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...
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Ionic Crystal Structures02:42

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Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
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Protein Complexes with Interchangeable Parts01:57

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Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
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Cytoskeletal Accessory Proteins01:13

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The cytoskeleton is an essential cell component that plays several structural and functional roles. However, the filaments that make up the cytoskeleton cannot function independently and depend on the accessory or ancillary proteins to effectively carry out their function. Accessory proteins associate with cytoskeletal filaments and their monomers, aiding filament formation and function. They also help in the cross-communication among cytoskeletal filaments. Cytoskeletal accessory proteins are...
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Protein Organization01:24

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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.
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Updated: Aug 5, 2025

Directed Assembly of Elastin-like Proteins into defined Supramolecular Structures and Cargo Encapsulation In Vitro
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Protein cages as building blocks for superstructures.

Ruoxuan Sun1, Sierin Lim1

  • 1School of Chemical and Biomedical Engineering Nanyang Technological University Singapore.

Engineering Biology
|March 27, 2023
PubMed
Summary
This summary is machine-generated.

Protein cages self-assemble into complex structures for various functions. This review explores design strategies for building advanced superstructures from these protein cages, enabling new functional materials.

Keywords:
molecular biophysicsproteinsself‐assembly

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Area of Science:

  • Biomolecular engineering
  • Supramolecular chemistry
  • Materials science

Background:

  • Proteins self-assemble into functional structures like protein cages.
  • Protein cages are hollow, symmetrical assemblies of subunits with diverse applications.
  • Building higher-order superstructures from protein cages is an emerging area of research.

Purpose of the Study:

  • To review current design strategies for supramolecular self-assembly of protein cages.
  • To highlight the principles guiding the formation of higher-order protein cage constructs.
  • To summarize potential applications of these advanced superstructure architectures.

Main Methods:

  • Review of existing literature on protein cage self-assembly.
  • Analysis of design principles including electrostatic interactions, metal-ligand coordination, and inherent symmetry.
  • Summarization of applications for engineered protein cage superstructures.

Main Results:

  • Identified three key principles (electrostatic, coordination, symmetry) driving protein cage supramolecular assembly.
  • Demonstrated the feasibility of creating complex, higher-order structures using protein cages as building blocks.
  • Outlined the potential for diverse functional materials derived from these engineered assemblies.

Conclusions:

  • Supramolecular self-assembly of protein cages offers a powerful platform for creating novel functional materials.
  • Understanding design principles is crucial for engineering advanced protein cage-based superstructures.
  • Modified protein cages hold significant promise for applications in various fields.