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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,...
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 Organization01:24

Protein 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.
Protein Organization01:13

Protein Organization

Overview

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Related Experiment Video

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Genome-wide Protein-protein Interaction Screening by Protein-fragment Complementation Assay (PCA) in Living Cells
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Genome-wide Protein-protein Interaction Screening by Protein-fragment Complementation Assay (PCA) in Living Cells

Published on: March 3, 2015

Protein-protein interactions: from global to local analyses.

Wp Kelly1, Mph Stumpf

  • 1Centre for Bioinformatics, Imperial College London, London, United Kingdom. william.kelly04@imperial.ac.uk

Current Opinion in Biotechnology
|July 23, 2008
PubMed
Summary

Researchers are exploring protein-protein interactions to understand biological systems better. Analyzing proteome and interactome data presents challenges but offers insights into complex networks for mechanistic studies.

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Genome-wide Protein-protein Interaction Screening by Protein-fragment Complementation Assay (PCA) in Living Cells
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Area of Science:

  • Proteomics and Interactomics
  • Systems Biology
  • Bioinformatics

Background:

  • The increasing availability of complete genome sequences necessitates the study of proteomes and interactomes.
  • Proteomes represent the full set of proteins, while interactomes map protein-protein interactions, forming complex biological networks.

Purpose of the Study:

  • To discuss challenges in current protein-interaction data.
  • To outline a strategy for analyzing protein-protein interaction data from global to focused studies.
  • To highlight the potential of protein-interaction data in evaluating biological mechanistic hypotheses.

Main Methods:

  • Review and discussion of existing protein-interaction data.
  • Development of a framework for analyzing large-scale sparse interaction networks.
  • Integration of proteomic and interactomic data analysis.

Main Results:

  • Identification of key challenges in utilizing current protein-interaction datasets.
  • Proposal of a systematic approach to navigate and analyze complex protein-interaction networks.
  • Demonstration of how careful data utilization can enhance biological system understanding.

Conclusions:

  • Elucidating complete proteomes and interactomes is crucial for understanding biological systems.
  • Overcoming data challenges is key to fully leveraging protein-interaction information.
  • Systematic analysis of interactome data aids in evaluating mechanistic hypotheses and advancing systems biology.