Probable histone methyltransferase. Histone methylation gives specific tags for epigenetic transcriptional activation or repression (By similarity). L-lysyl(36)-[histone H3] + 2 S-adenosyl-L-methionine = 2 H(+) + N(6),N(6)-dimethyl-L-lysyl(36)-[histone H3] + 2 S-adenosyl-L-homocysteine Belongs to the class V-like SAM-binding methyltransferase superfamily. Histone-lysine methyltransferase family. SET2 subfamily.