At the late trophozoite stage synchronized parasites were treated with 0.5μM Shld1 or ethanol solvent control for 36h. Proteins were sequentially extracted as previously described2 (link), separated on 4-12% polyacrylamide gels (Life Technologies), and assayed using anti-HA tag (Roche Diagnostics 11 867 423 001), anti-Histone 3 (Abcam ab1791), and anti-PfPP2c (generous gift from C. Ben Mamoun). Replicates were biological not technical.