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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 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,...
Proteomics01:33

Proteomics

A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term proteomics...

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Identifying Protein-protein Interaction Sites Using Peptide Arrays
07:44

Identifying Protein-protein Interaction Sites Using Peptide Arrays

Published on: November 18, 2014

Studying protein-protein interactions using peptide arrays.

Chen Katz1, Liron Levy-Beladev, Shahar Rotem-Bamberger

  • 1Institute of Chemistry, The Hebrew University of Jerusalem, Safra Campus, Givat Ram, Jerusalem 91904, Israel.

Chemical Society Reviews
|January 19, 2011
PubMed
Summary

Peptide arrays efficiently map protein-protein interactions by analyzing binding sites. This method aids in understanding cellular functions and designing targeted drugs by identifying key amino acid sequences involved in interactions.

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Identifying Protein-protein Interaction Sites Using Peptide Arrays
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Published on: November 18, 2014

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Extracellular Protein Microarray Technology for High Throughput Detection of Low Affinity Receptor-Ligand Interactions

Published on: January 7, 2019

Area of Science:

  • Biochemistry and Molecular Biology
  • Chemical Biology
  • Drug Discovery

Background:

  • High-throughput screening of compound libraries and arrays is vital for analyzing biological and chemical interactions.
  • Understanding protein-protein interactions is fundamental to deciphering cellular functions and processes.
  • Peptide arrays offer a method to precisely map binding sites within protein complexes.

Purpose of the Study:

  • To review the applications, advantages, and disadvantages of using peptide arrays for studying protein-protein interactions.
  • To highlight recent advancements in peptide array technology and its utility in biological research.
  • To discuss the potential of peptide array findings in developing predictive algorithms and therapeutic agents.

Main Methods:

  • Peptide array libraries containing overlapping peptides from a protein of interest are synthesized on a solid support (e.g., SPOT-synthesis, photolithography).
  • Arrays are incubated with the interacting partner protein.
  • Protein binding is detected using immunodetection assays, followed by semi-quantitative analysis and validation through quantitative solution-phase studies.

Main Results:

  • Peptide arrays enable the characterization of protein-protein interactions by identifying specific binding peptides.
  • The screening provides semi-quantitative data that can be further validated.
  • Identified binding patterns can contribute to a deeper understanding of cellular mechanisms and facilitate drug design.

Conclusions:

  • Peptide arrays are a powerful tool for mapping protein-protein interactions and characterizing binding sites.
  • This technique aids in understanding cellular processes and has potential applications in drug discovery for modulating protein interactions.
  • Further quantitative studies are essential for validating screening results and developing predictive models.