Geometry and electrostatic potential surface of the NSD2 TS structure. (A) TS structure for H3K36 methylation catalyzed by NSD2 with active-site amino acids F1117, M1140, and Y1179 (TS2). (B) Electrostatic potential surface map (EPSM) for TS2 (red, partial negative; blue, partial positive). (C) A comparison of the EPSM for TS2, SAM, and methyltransferase inhibitor sinefungin. The NBO charge for the sulfur atom, CH3 group (sum of carbon and hydrogen), and lysine NH2 group are shown in parentheses for TS2 and SAM.