Extended Data Fig. 9: Characterization of CK2B function in prolonged cold-induced H3K27 trimethylation.

a, Analysis of SWN:HA levels in the seedlings of ck2b+/- and ck2b-quad over the course of 35-d cold treatment. ACTIN serves as an endogenous control. The experiment was conducted twice independently with similar results. b,c, Levels of H3K27me3 on total histones in the seedlings of WT and ck2b-quad over the course of 35-d cold exposure, as revealed by immunoblotting with anti-H3K27me3. Representative protein blots are shown in (b), whereas relative levels of H3K27me3 are shown in (c). H3 serves as an endogenous control. The levels of H3K27me3 were normalized to H3; data are presented as mean values ± s.d. of three biological replicates, and P values are derived from one-way ANOVA.