A New Method for Identifying Lysine Methyltransferase Substrates
Author Information
Author(s): Binda Olivier, Boyce Michael, Rush Jason S, Palaniappan Krishnan K, Bertozzi Carolyn R, deGozani Or
Primary Institution: Stanford University
Hypothesis
New unbiased methods are needed to find PKMT substrates.
Conclusion
The study presents a chemical biology approach that enables the identification of novel PKMT substrates using a synthetic SAM analogue.
Supporting Evidence
- The method allows for unbiased searches for new PKMT substrates.
- SETDB1 was used as a model enzyme to demonstrate the method's effectiveness.
- The alkyne-tagged substrates can be purified and analyzed by mass spectrometry.
Takeaway
Scientists created a new way to find proteins that are modified by enzymes called lysine methyltransferases, which help control important processes in cells.
Methodology
The study developed a chemical biology method using an alkyne-bearing SAM analogue to label and identify PKMT substrates through CuAAC chemistry.
Limitations
The method may not be applicable to all PKMTs, as some did not accept the SAM analogue.
Digital Object Identifier (DOI)
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