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Related Concept Videos

Protein-protein Interfaces02:04

Protein-protein Interfaces

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Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
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Protein Networks02:26

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An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
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Designing Silk-silk Protein Alloy Materials for Biomedical Applications
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Engineering Protein-Polyelectrolyte Interactions for Cellular Applications.

Rachel S Fisher1, Jane Liao1, So Yeon Ahn1

  • 1Chemical Engineering, Columbia University, New York, NY, USA;

Annual Review of Chemical and Biomolecular Engineering
|March 13, 2025
PubMed
Summary

Protein-polyelectrolyte interactions are key in biology, driving processes from gene transcription to organelle formation. Protein engineering offers a way to understand and control these interactions for biological insights and novel biomaterial design.

Keywords:
biomolecular condensatescomplex coacervationpolyelectrolytepolyelectrolyte complex micellesprotein engineering

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Area of Science:

  • Biochemistry and Molecular Biology
  • Biomaterials Science
  • Chemical Biology

Background:

  • Protein-polyelectrolyte interactions are fundamental to biological processes at all scales.
  • These interactions are crucial for gene transcription, DNA synthesis, and viral assembly.
  • Protein engineering is a vital tool for studying and manipulating these interactions.

Purpose of the Study:

  • To review the noncovalent interactions governing protein-polyelectrolyte complex formation and behavior.
  • To discuss the impact of protein modifications (structure, charge, charge patterning) on these interactions.
  • To highlight applications in elucidating biological function and designing novel biomolecular materials.

Main Methods:

  • Review of existing literature on protein-polyelectrolyte interactions.
  • Analysis of protein engineering strategies to modulate these interactions.
  • Case studies of recent advancements in biomolecular condensate and nanoassembly design.

Main Results:

  • Protein modifications significantly affect the formation and behavior of protein-polyelectrolyte complexes.
  • Engineering these interactions provides insights into endogenous biological functions.
  • Successful de novo design of synthetic biomolecular condensates and functional nanoassemblies is demonstrated.

Conclusions:

  • Understanding protein-polyelectrolyte interactions is critical for both fundamental biology and applied biomaterials science.
  • Protein engineering is a powerful approach for both scientific discovery and the creation of new functional materials.
  • Future directions include advanced de novo design of complex biomolecular systems.