Subcellular localization of PfCLK-3 and PfCLK-4 in the blood stage. Mixed asexual blood stage cultures containing trophozoites (TZ) and schizonts (SZ) cultures were fixed with methanol and prepared for IFA, using rat antisera against PfCLK-3 and mouse antisera against PfCLK-4 (green). The parasite nuclei were highlighted by Hoechst staining (blue). The asexual blood stages were labelled with rabbit antisera against PfMSP-1. Bar, 5 mm. PfCLK-3 and PfCLK-4 are mainly present in the nucleus of trophozoites, while in schizonts and gametocytes both kinases are primarily located in the cytoplasm. Particularly for PfCLK-3 a rim-associated labelling pattern was observed in the latter stages. In the IFAs, the asexual blood stage parasites were highlighted by labelling of plasmalemma-associated proteins, i.e. PfMSP-1.

Kern S, Agarwal S, Huber K, Gehring AP, Strödke B, Wirth CC, Brügl T, Abodo LO, Dandekar T, Doerig C, Fischer R, Tobin AB, Alam MM, Bracher F, Pradel G. Inhibition of the SR Protein-Phosphorylating CLK Kinases of Plasmodium falciparum Impairs Blood Stage Replication and Malaria Transmission. PLoS One. 2014 Sep 4;9(9):e105732.