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Analyzing Protein Architectures and Protein-Ligand Complexes by Integrative Structural Mass Spectrometry
Published on: October 15, 2018
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Characterizing Protein-Protein Interactions Using Mass Spectrometry: Challenges and Opportunities
Arne H Smits1, Michiel Vermeulen1
1Department of Molecular Biology, Faculty of Science, Radboud Institute for Molecular Life Sciences, Radboud University Nijmegen, Nijmegen, The Netherlands.
Trends in Biotechnology
|March 22, 2016
Summary
Mass spectrometry (MS)-based proteomics identifies protein-protein interactions (PPIs). Novel methods, including proximity ligation and global interactome profiling, offer insights into complex stoichiometry and topology, with a call for miniaturized workflows.
Area of Science:
- Proteomics
- Biochemistry
- Molecular Biology
Background:
- Mass spectrometry (MS)-based proteomics is a key technology for identifying protein-protein interactions (PPIs).
- Quantitative filtering in protein enrichments effectively distinguishes true interactors from background noise.
- Recent advancements have expanded the toolkit for PPI discovery.
Purpose of the Study:
- To review novel methodologies for identifying protein-protein interactions.
- To highlight techniques providing insights into interaction stoichiometry and topology.
- To emphasize the need for miniaturized workflows in limited-sample contexts.
Main Methods:
- Proximity-ligation technology for PPI identification.
- Global interactome profiling via co-behavior in biochemical purification or perturbation experiments.
- Review of emerging methodologies for PPI analysis.
Main Results:
- Development of diverse approaches for PPI identification.
- Introduction of methods for determining PPI stoichiometry and topology.
- Identification of powerful quantitative filtering strategies.
Conclusions:
- Novel MS-based proteomics methods offer sophisticated PPI analysis.
- Miniaturization of workflows is crucial for analyzing protein interactions in low-input biological and pathological samples.
Keywords:
crosslinking mass spectrometrymass spectrometry-based proteomicsprotein complex stoichiometryprotein–protein interactionsultra-sensitive interaction proteomicsMore Related Videos
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