H3K9 dimethylation
= H3K9 dimethylation
{c}
= H3K9me2
{c}
{synonym}
<H3K9 dimethylation> is addition of two <methyl groups> to lysine 9 of <histone H3>, conventionally abbreviated H3K9me2. It is associated with repressive <chromatin> in several systems, including extensive domains in <plants>. Its distribution differs from the mono- and trimethylated states of the same residue. In <Arabidopsis thaliana>, joint changes in this mark and non-CG <DNA methylation> alter recombination near <centromeres>, linking <chromatin> state to inherited variation. <Epigenetic activation of meiotic recombination near Arabidopsis thaliana centromeres via loss of H3K9me2 and non-CG DNA methylation by Charles J. Underwood and others>[2018, mutant chromatin and recombination measurements]{ref}