Computational prediction of protein-protein interactions
Lucy Skrabanek1, Harpreet K Saini, Gary D Bader
1Department of Physiology and Biophysics and Institute for Computational Biomedicine, Weill Medical College of Cornell University, 1300 York Avenue, New York, NY 10021, USA.
Molecular Biotechnology
|December 21, 2007
Summary
Computational methods predict protein-protein interactions using genomic and structural data, advancing proteomics research. These approaches complement experimental techniques for mapping protein interaction networks.
Area of Science:
- Proteomics
- Bioinformatics
- Systems Biology
Background:
- Experimental methods for protein-protein interaction (PPI) detection are costly and time-consuming.
- Advances in complete genome sequencing provide extensive data for computational analysis.
- Computational approaches offer a scalable alternative for predicting PPIs.
Purpose of the Study:
- To review computational protocols for predicting protein-protein interactions.
- To highlight the use of structural, genomic, and biological context in PPI prediction.
- To describe methods for analyzing and visualizing protein interaction networks.
Main Methods:
- Utilizing sequence data alone for interaction prediction.
- Integrating multiple computational and experimental datasets.
- Applying analyses to complete genomes for network construction.
Main Results:
- Development of computational approaches for predicting protein interactions.
- Prediction of protein interaction networks and functional linkages.
- Creation of comprehensive protein interaction maps.
Conclusions:
- Computational methods are crucial for advancing proteomics by predicting PPIs.
- These methods complement high-throughput experimental projects.
- The described protocols facilitate network visualization and analysis.
Related Concept Videos
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...
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,...
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...
01:24Protein Organization
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.
The primary structure of a protein is its amino acid sequence.
The primary structure of a protein is its amino acid sequence.