Histone deacetylases (HDACs) catalyze the hydrolytic removal of acetyl groups from histone lysine residues, which commonly results in chromatin condensation and transcriptional repression.{12365,12366} LMK 235 is an HDAC inhibitor that selectively targets HDACs 4 and 5 (IC50s = 12 and 4 nM, respectively) over other HDACs (IC50s = 56, 320, 850, 880, and 1,280 for HDACs 6, 1, 11, 2, and 8, respectively).{30765} It displays enhanced cytotoxic effects against human cancer cell lines, compared to SAHA (Item No. 10009929) or trichostatin A (Item No. 89730).{30765} LMK 235 and derivatives inhibit the growth of the malarial parasite P. falciparum at multiple life cycle stages at nanomolar concentrations.{30764}