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Updated: Jul 13, 2026
07:08
Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues
Published on: July 14, 2015
Identification of functional modules from conserved ancestral protein-protein interactions
Janusz Dutkowski1, Jerzy Tiuryn
1Institute of Informatics, Warsaw University, Poland. januszd@mimuw.edu.pl
Bioinformatics (Oxford, England)
|July 25, 2007
Summary
We developed a novel protein network alignment framework using ancestral network reconstruction. This method effectively identifies conserved functional modules across multiple species by modeling protein network evolution.
Area of Science:
- Computational Biology
- Bioinformatics
- Systems Biology
Background:
- Large-scale protein-protein interaction (PPI) data is crucial for understanding cellular machinery.
- Cross-species comparison of protein networks aids in identifying functional modules.
- Scalable network alignment methods are needed for multiple network comparisons.
Purpose of the Study:
- To develop a new framework for protein network alignment.
- To reconstruct ancestral protein interaction networks.
- To identify conserved functional modules across species.
Main Methods:
- Developed a novel framework for protein network alignment.
- Reconstructed ancestral protein-protein interaction networks.
- Modeled protein network evolution incorporating phylogenetic history and interaction changes.
Main Results:
- Identified conserved ancestral interactions related to known protein complexes in yeast, worm, and fly.
- Projected conserved ancestral interactions to pinpoint corresponding conserved protein modules.
- Demonstrated the ability to compare multiple networks simultaneously, uncovering functional modules with high specificity.
Conclusions:
- The ancestral network reconstruction framework effectively identifies conserved functional modules.
- The method offers high specificity in uncovering functional modules across species.
- The approach enables scalable, simultaneous comparison of multiple protein networks.
Related Concept Videos
01:49Conserved Binding Sites
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
01:49Conserved Binding Sites
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
02:26Protein 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,...
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,...
02:26Protein 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,...
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,...
02:04Protein-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...
02:04Protein-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...