Histone H3 Trimethyl Lys4

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** A post-translationally modified form of histone H3 where the lysine residue at position 4 is trimethylated. This modification may be a marker for areas of active gene expression.

**Synonyms:** - H3K4me3 - H3K4me3 - H3K4me3 Antigen - Histone H3 Trimethyl Lys5 - Histone H3 Trimethyl Lysine 4 - Histone H3 Trimethyl Lysine 5