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Updated: Mar 18, 2026
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Specificity Analysis of Protein Lysine Methyltransferases Using SPOT Peptide Arrays
Published on: November 29, 2014
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Preparation, Biochemical Analysis, and Structure Determination of Methyllysine Readers
C A Musselman1, T G Kutateladze2
1University of Iowa, Iowa City, IA, United States.
Methods in Enzymology
|July 4, 2016
Summary
Characterizing methyllysine reader domains and their interactions with substrates is key for understanding chromatin regulation and developing new therapeutics. This chapter details methods for preparing and analyzing these crucial protein domains.
Area of Science:
- Biochemistry
- Molecular Biology
- Structural Biology
Background:
- Methyllysine reader domains are critical for chromatin regulation.
- Understanding their interactions with methyllysine substrates is essential for therapeutic development.
Purpose of the Study:
- To summarize methods for preparing and characterizing methyllysine reader domains.
- To provide a detailed protocol for analyzing histone-binding activities.
- To outline steps for determining the structures of these complexes.
Main Methods:
- Preparation of GST-tagged methyllysine reader domains.
- Histone-binding assays including pull-down, tryptophan fluorescence, and NMR.
- Crystallization techniques for complex structures.
Main Results:
- Detailed protocols for domain preparation and biochemical characterization.
- Demonstration of histone-binding analysis using multiple biochemical assays.
- Initial progress towards structural determination of reader domain-substrate complexes.
Conclusions:
- Established methods facilitate in-depth characterization of methyllysine reader domains.
- These techniques are vital for advancing chromatin regulation research.
- The described protocols support the design of targeted therapeutics.
