set7/9

Sinefungin (Adenosyl-Ornithine) belongs to natural products and is an mRNA methyltransferase inhibitor with broad-spectrum antiviral activity. This compound possesses cell permeability and is commonly used in antiviral mechanism research and antiviral drug development.

TC-5115 is a highly potent, selective inhibitor of the SET domain of the histone lysine methyltransferase MLL1 (KMT2A), with an IC₅₀ value of 16 nM. TC-5115 exhibits weak inhibitory activity against other methyltransferases such as SET7/9, DOT1L, and EZH2 (IC₅₀ > 1 μM). TC-5115 induces differentiation and growth arrest in leukemia cells and can be used in leukemia research.

(1-Nitroethene-1,2-diyl)dibenzene (alpha-Nitrostilbene; α-Nitrostilbene) serves as an inhibitor of protein arginine methyltransferase 1 (PRMT1; histone H4 methylation assay with an IC50 of 11 μM). At concentrations of 10 and 100 μM, it also inhibits histone H4 methylation caused by PRMT8 but does not affect methylation of histone H3.1 induced by CARM1 or Set7/9.