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© Yang SI, Institut Pasteur
Publication : Methods in molecular biology (Clifton, N.J.)

DNA methyltransferase assays

Team: Epigenetic Chemical Biology
Member: Paola Arimondo
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Methods in molecular biology (Clifton, N.J.) - 01 Jan 2011

Jurkowska RZ, Ceccaldi A, Zhang Y, Arimondo PB, Jeltsch A

Link to Pubmed [PMID] – 21913079

Methods Mol. Biol. 2011;791:157-77

DNA methyltransferases are important enzymes and their inhibition has many potential applications. The investigation of DNA methyltransferases as well as screening for potential inhibitors requires specialized enzyme assays. In this chapter, we describe three DNA methyltransferase assays, each of them based on a different method: (1) An assay using radioactively labeled AdoMet and biotinylated DNA substrates that is ideal for enzymatic characterization of these enzymes. (2) An assay using bisulfite conversion of in vitro methylated DNA that is ideal to determine details of the methylation pattern introduced by DNA-(cytosine C5)-methyltransferases. (3) A novel fluorescence-coupled, restriction-based assay suitable for high-throughput screening of DNA methyltransferase inhibitors.