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Updated: May 13, 2026
07:41
Sequential Salt Extractions for the Analysis of Bulk Chromatin Binding Properties of Chromatin Modifying Complexes
Published on: October 2, 2017
Simple and efficient identification of chromatin modifying complexes and characterization of complex composition
Jeong-Heon Lee1, David Skalnik
1Department of Pediatrics, Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, USA.
Methods in Molecular Biology (Clifton, N.J.)
|February 26, 2013
Summary
Researchers identified protein complexes involved in chromatin modification using FLAG affinity purification and mass spectrometry. This method efficiently characterizes the composition of these important cellular complexes.
Area of Science:
- Biochemistry
- Molecular Biology
- Proteomics
Background:
- Protein complexes play crucial roles in cellular processes, including chromatin modification.
- Identifying and characterizing these complexes is essential for understanding gene regulation.
- Existing methods for complex analysis can be complex and time-consuming.
Purpose of the Study:
- To develop and describe simple and efficient approaches for identifying Wdr82-associated chromatin modifying complexes.
- To characterize the composition of these identified complexes.
Main Methods:
- Affinity purification using FLAG-tagged Wdr82 in human cells.
- Mass spectrometry analysis to identify purified proteins.
- Sucrose gradient equilibrium centrifugation to determine complex composition.
Main Results:
- Successfully purified and identified Wdr82-associated chromatin modifying complexes.
- Characterized the overall composition of the identified complexes.
- Demonstrated the efficiency and simplicity of the described approaches.
Conclusions:
- The described methods provide a straightforward and effective way to identify and characterize chromatin modifying complexes.
- These techniques can be broadly applied to the study of other protein complexes.
- Understanding complex composition is key to elucidating their functions in biological processes.
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01:01Euchromatin
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02:38Heterochromatin
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