Human G9a, also known as EHMT2 (euchromatic histone-lysine N-methyltransferase 2) and KMT1C (GenBank Accession No. NM_006709), a.a. 785-1210, with N-terminal GST-tag, MW = 74.6 kDa, expressed in a Baculovirus infected Sf9 cell expression system.
Host cell line: Sf9 cells
Specific activity: >=70 pmol/min/ug
Background
EHMT2 (G9a) is a lysine-preferring histone methyltransferase. EHMT2 can methylate itself at K165 and this automethylation is necessary and sufficient to mediate in vivo interaction of EHMT2 with heterochromatin protein-1 (HP1). EHMT2 is responsible for the majority of dimethylation of histone H3 at lysine 9 (H3K9me2) and is required for the efficient repression of developmentally regulated genes during embryonic stem cell differentiation. EHMT2 is overexpressed in various cancers and can can specifically methylate p53 at Lys(373). EHMT2 polymorphisms have been associated with colorectal cancer.
Immunogen Region
785-1210
Tag
N-terminal GST-tag
Formulation
45 mM Tris-HCl, pH 8.0, 124 mM NaCl, 2.4 Mm KCl, 3 mM DTT and 10% glycerol
Species
Human
Application
Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling
Notes
50 ulreaction mix (50 mM TRIS pH 8.8, 5mM MgCl2,4mM DTT, 0.05% Tween-20, 40 uM S-adenosylmethionine, and G9a (0.05 - 0.5 ng)add to the wells coated with the substrate on aGBioscience Neutravidin black plate. Incubatefor 1 hr. Add antibody against methylated K9residue of histone H3, incubate 1 hr. Then, addsecondary HRP-labeled antibody and incubate30 min. Finally, add HRP chemiluminescentsubstrates and read luminescence.