G9a

G9a is an enzyme in the body that plays a key role in regulating gene activity. It adds a chemical mark called methyl groups to specific proteins associated with DNA, which often turns off or reduces the activity of certain genes. This process helps control gene expression, impacting cell development, function, and response to the environment. G9a is important for normal biology, and its dysfunction has been linked to diseases like cancer and neurological disorders. Essentially, G9a acts as a molecular switch, influencing how genes are turned on or off in our cells.