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Related Concept Videos

Conservation of Protein Domains Over Different Proteins02:26

Conservation of Protein Domains Over Different Proteins

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Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
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Protein-protein Interfaces02:04

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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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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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Protein Organization01:24

Protein Organization

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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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Related Experiment Video

Updated: Mar 11, 2026

Protein WISDOM: A Workbench for In silico De novo Design of BioMolecules
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Computational Protein Design Through Grafting and Stabilization.

Cheng Zhu1, David D Mowrey1, Nikolay V Dokholyan2

  • 1Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.

Methods in Molecular Biology (Clifton, N.J.)
|December 4, 2016
PubMed
Summary
This summary is machine-generated.

Computational protein design uses grafting to create novel protein functions by introducing mutations into existing scaffolds. Tools like Erebus and Eris aid in finding compatible scaffolds and predicting stabilizing mutations for successful protein engineering.

Keywords:
Free energyMutationProtein designRefinementScaffold searchStabilization

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Area of Science:

  • Protein engineering
  • Computational biology
  • Structural bioinformatics

Background:

  • Computational grafting enables the design of proteins with novel functions by introducing target residues onto existing scaffolds.
  • This method involves creating side chain mutations in a protein scaffold to replicate a functional motif.

Purpose of the Study:

  • To present computational tools for identifying compatible protein scaffolds and guiding mutation design for novel protein function.
  • To enhance the success rate of protein grafting by ensuring structural compatibility and stability.

Main Methods:

  • Utilizing the Erebus webserver to search the Protein Data Bank (PDB) for suitable structural scaffolds based on user-defined criteria.
  • Employing the Eris webserver to predict the impact of mutations on protein stability, prioritizing those that increase stability.

Main Results:

  • Erebus and Eris provide effective methods for identifying existing protein templates for grafting.
  • Predicting stabilizing mutations increases the likelihood of maintaining protein structure and achieving desired function.

Conclusions:

  • The combination of Erebus and Eris facilitates efficient protein scaffold searching and design.
  • These computational tools support the rational design of proteins with novel functions through residue grafting.