Expression and localization of PfGSK3 and its PKA dependent phosphorylation of AMA1. (C,D) Epifluorescence (C) and confocal (D) localization of PfGSK3-GFP in late trophozoites (LT) schizonts (S) and merozoites (M) revealed perinuclear and cytosolic distribution. Nuclei are stained with DAPI (blue). Scale bars, 2 μm. Prinz B, Harvey KL, Wilcke L, Ruch U, Engelberg K, Biller L, Lucet I, Erkelenz S, Heincke D, Spielmann T, Doerig C, Kunick C, Crabb BS, Gilson PR, Gilberger TW. Hierarchical phosphorylation of apical membrane antigen 1 is required for efficient red blood cell invasion by malaria parasites. Sci Rep. 2016 6:34479. PMID: 27698395