(A) Schematic representation of the protein sequence of MCRS1Δ139–192 mutant. (B) Sequence alignment of human, mouse and yeast MCRS1 protein sequence with proteins containing a SANT domain. (C) IP performed in HepG2 cells overexpressing HA-MCRS1WT and HA-MCRS1Δ130–192 mutant proteins (N=3). s.e. and l.e. mean short exposure and long exposure, respectively. (D) WB performed in preparations of in vitro translated HA-HISH3 incubated with GST-, GST-MCRS1WT and GST-MCRS1Δ130–192. (E) IP performed in HepG2 cells (N=3). (F) WB of indicated proteins of core histones isolated from HepG2 cells overexpressing GFP, HA-MCRS1WT and HA-MCRS1Δ130–192 mutant proteins (N=3). (G) WB performed in isolated hepatocytes from 6-week-old Mcrs1(+/+)hep and Mcrs1(Δ/Δ)hep mice. (H) Chromatin IP (ChIP) using MCRS1 antibody performed in HepG2 cells (N=3). (I) and (J) ChIPs using H3K9Ac (I) and H3K18Ac (J) antibodies performed in HepG2 cells overexpressing HA-MCRS1WT and HA-MCRS1Δ130–192 mutant proteins (N=3). (K) ChIP using HDAC1 antibody performed in HepG2 cells transfected with siCtr or siMCRS1 (N=3). Statistical analysis was performed using two-way ANOVA with Tukey’s multiple comparisons test in (H), and unpaired two-tailed Student’s t test in (I) to (K). Data are represented as means±SEM. *, p≤0.05; **, p≤0.01.