Published Online: 22 MAR 2002
Copyright © 2001 John Wiley & Sons, Ltd. All rights reserved.
How to Cite
Hornby, D. P. 2002. DNA Methylation. eLS. .
- Published Online: 22 MAR 2002
DNA methylation occurs in most living organisms and is the enzyme-mediated transfer of a methyl group from S-adenosyl-l-methionine to specific cytosine or adenine bases within the genome of that organism. The biological consequences of DNA methylation are thought to be diverse, ranging from resistance to bacteriophage infection in microorganisms to the programming of gene expression in mammals.
- restriction and modification;
- DNA methyltransferase;
- methyl transfer;