H3K9me3

H3K9me3 is the covalent modification of histone protein. The repeat-rich regions of constitutive heterochromatin are enriched by dimethylation and trimethylation of histone 3 lysine 9 (H3K9me2 and H3K9me3).[1]

Nomenclature

H3K9me3 means trimethylation of lysine 9 on histone H3 protein subunit:

Abbr. Meaning
H3 H3 family of histones
K standard abbreviation for lysine
9 position of amino acid residue
(counting from N-terminus)
me methyl group
3 number of methyl groups added

References

  1. ↑ Nakayama, Jun-ichi (2001). "Role of histone H3 lysine 9 methylation in epigenetic control of heterochromatin assembly". Science. 292 (5514): 110–113. PMID 11283354.
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