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Related Concept Videos

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-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...
Ligand Binding Sites02:40

Ligand Binding Sites

Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
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,...

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Docking and scoring protein interactions: CAPRI 2009.

Marc F Lensink1, Shoshana J Wodak

  • 1Genome and Network Bioinformatics, CP 263, BC6, Université Libre de Bruxelles, Blvd du Triomphe, 1050 Bruxelles, Belgium.

Proteins
|September 1, 2010
PubMed
Summary
This summary is machine-generated.

Protein docking algorithms show improved performance in predicting protein complex structures, with 67% of groups generating acceptable models. However, accurately ranking the best models remains a challenge for computational biology.

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Area of Science:

  • Computational Biology
  • Structural Biology
  • Bioinformatics

Background:

  • Protein-protein interactions are crucial for biological processes.
  • Accurate prediction of protein complex structures is essential for understanding function.
  • The Critical Assessment of Predicted Interactions (CAPRI) experiment benchmarks protein docking algorithms.

Purpose of the Study:

  • To assess the performance of protein docking algorithms in blind prediction rounds (13-19) of CAPRI.
  • To evaluate the ability of algorithms to sample correct docking poses and identify specific association modes.
  • To analyze progress in protein docking and scoring methods over time.

Main Methods:

  • Evaluation of 4420 blind protein docking predictions submitted by 64 groups and 12 web servers.
  • Analysis of predictions for 14 targets representing 11 distinct protein complexes with diverse biological roles.
  • Assessment of 1296 scoring predictions submitted by 41 groups and 4 web servers.

Main Results:

  • 67% of participating groups produced acceptable or better models for at least one target, a record high.
  • Many groups submitted multiple high- and medium-accuracy models for several targets.
  • While scoring predictions show progress, accurately identifying the single best model remains a significant challenge.

Conclusions:

  • Protein docking algorithms have demonstrated significant progress in generating accurate models of protein assemblies.
  • Continued development is needed to improve the ability to reliably rank and select the best predicted models.
  • Advancements in docking and scoring methods are crucial for translating interaction networks into realistic biological models.