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Related Concept Videos

Protein Networks02:26

Protein Networks

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,...
Protein Networks02:26

Protein Networks

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,...
Conservation of Protein Domains Over Different Proteins02:26

Conservation of Protein Domains Over Different Proteins

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.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
Protein-protein Interfaces02:04

Protein-protein Interfaces

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 polypeptide...
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

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.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

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.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...

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Related Experiment Video

Updated: Jun 19, 2026

Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions
06:50

Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions

Published on: January 26, 2024

Design of multispecific protein sequences using probabilistic graphical modeling.

Menachem Fromer1, Chen Yanover, Michal Linial

  • 1School of Computer Science and Engineering, The Hebrew University of Jerusalem, Israel. fromer@cs.huji.ac.il

Proteins
|October 21, 2009
PubMed
Summary

This study introduces a computational framework for multispecific protein design, enabling the prediction of protein sequences compatible with multiple structures or binding partners. This advances drug design and protein engineering by mimicking evolutionary sequence diversity.

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Area of Science:

  • Computational biology
  • Protein engineering
  • Structural biology

Background:

  • Proteins mediate functions through interactions and can adopt multiple stable structures.
  • Understanding protein structural promiscuity is crucial for drug design and protein physics.
  • Multispecific protein design aims to engineer proteins compatible with multiple states.

Purpose of the Study:

  • To develop a novel computational framework for efficient and accurate multispecific protein design.
  • To predict protein sequences with low energies in multiple target states.
  • To generate positional amino acid probability profiles for experimental screening.

Main Methods:

  • Utilized probabilistic graphical modeling for sequence prediction.
  • Developed a framework to predict sequences compatible with multiple target structures or binding partners.
  • Generated positional amino acid probability profiles for high-throughput screening.

Main Results:

  • The framework efficiently and accurately performs multispecific protein design.
  • Demonstrated utility in recovering evolutionary amino acid sequence diversities.
  • Showcased complementarity between predicting low energy ensembles and amino acid profiles for robust predictions.

Conclusions:

  • The developed computational framework advances multispecific protein design.
  • Positional amino acid profiles can guide experimental sequence screening for novel protein functionalities.
  • This approach offers insights into natural protein multispecificity and facilitates the synthesis of novel proteins.