Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A. Acetylation of histones by histone acetyltransferases (HATs) leads to increased gene expression, whereas histone deacetylation by histone deacetyltransferases (HDACs) leads to decreases in gene expression.
B. Methylation of DNA by DNA methyl transferases (DNMTs) leads to gene silencing.
