Related Experiment Video
Updated: Mar 17, 2026

Resolving Affinity Purified Protein Complexes by Blue Native PAGE and Protein Correlation Profiling
Published on: April 1, 2017
Studying epigenetic complexes and their inhibitors with the proteomics toolbox
David Weigt1, Carsten Hopf1, Guillaume Médard2
1Center for Applied Research in Biomedical Mass Spectrometry (ABIMAS), Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany ; HBIGS International Graduate School of Molecular and Cellular Biology, Heidelberg University, Im Neuenheimer Feld 501, 69120 Heidelberg, Germany.
New affinity probes help researchers understand epigenetic drugs. These tools identify drug targets and off-target effects, advancing the study of epigenetic modifier proteins and their complexes.
Area of Science:
- Biochemistry
- Molecular Biology
- Pharmacology
Background:
- Epigenetic modifier proteins are key clinical targets.
- Small molecule inhibitors targeting these proteins are in development.
- Understanding drug action, including on-target and off-target effects, is crucial.
Purpose of the Study:
- To review technologies for comprehending the molecular action of epigenetic drugs.
- To highlight affinity probes for identifying drug targets and off-target effects.
- To present a toolbox for studying epigenetic complexes.
Main Methods:
- Review of published affinity probes based on small molecule analogues of epigenetic drugs.
- Immunoaffinity purification using antibodies against native protein complex constituents or epitope tags.
- Affinity matrices for recombinantly tagged proteins and enrichment using histone tail peptides.
Main Results:
- Affinity probes enrich direct protein targets and stable interactors of epigenetic drugs.
- Mass spectrometry identifies these enriched targets and interactors.
- The reviewed techniques facilitate the study of megadalton epigenetic complexes.
Conclusions:
- Affinity probes are valuable tools for deciphering small molecule targets and off-targets in epigenetic drug research.
- The presented toolbox aids in understanding epigenetic complexes and drug mechanisms.
- These methods, combined with mass spectrometry, will advance epigenetic research.
More Related Videos
Related Concept Videos
Eukaryotic Transcription Inhibitors
Eukaryotic transcription inhibitors usually contain two distinct domains, a...
Protein-protein Interfaces
Chromatin Immunoprecipitation- ChIP
Types of ChIP
ChIP can be divided into two types - X-ChIP and N-ChIP. X-ChIP involves in vivo cross-linking of histones and regulatory proteins to DNA, fragmenting the DNA by sonication, and isolating the protein-DNA...
Protein Networks
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,...
Covalently Linked Protein Regulators
These groups modify specific amino acids in a protein....
Epigenetic Regulation
X-chromosome...

