a: methylation ~
b: blue highlighter
What:
There are different types of epigenetic marks, and each one tells the proteins in the cell to process those parts of the DNA in certain ways. For example, DNA can be tagged with tiny molecules called methyl groups that stick to some of its C letters. There are proteins that specifically seek out and bind to these methylated areas, and shut it down so that the genes in that region are inactivated in that cell. So methylation is like a blue highlighter telling the cell "you don't need to know about this section right now."
Useful?
Writer: Catherine Ennis PhD.
LCC:
Where:
Date: Aug 19 2014 4:43 PM
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