Karkhanis V, Wang L, Tae S, Hu YJ, Imbalzano AN, Sif S. Protein arginine methyltransferase 7 regulates cellular response to DNA damage by methylating promoter histones H2A and H4 of the polymerase d catalytic subunit gene, POLD1. J Biol Chem. 2012 Aug 24; 287(35):29801-14.