PF3D7_0501300 skeleton-binding protein 1

Plasmodium falciparum export protein PFE60 is a resident Maurer’s cleft protein not exposed on the infected red blood cell surface. (B) Dual immunofluorescence assays of PFE60 with exported proteins localised in different areas of the infected red blood cell. CS2WT or PFE60-hemagglutinin/Strep infected red blood cells were probed with anti-PFE60 (or anti-hemagglutinin) (first column), and co-localisation studies carried out with anti-P. falciparum Exported Membrane Protein 3, anti-Plasmodium Transport Protein 2, anti-Heat Shock Protein 70x, anti-Plasmodium transport protein1 and antiskeleton-

binding protein 1 (second column). PFE60 strongly co-localises with the MC resident proteins skeleton-binding protein 1 and Plasmodium transport protein1. The ‘Overlay’ column shows an overlay of the two fluorescence signals and merged images of the fluorescence signal, DAPI and bright field are depicted in the ‘Merge’ column. Scale bar: 4 lm. (C) Trypsin treatment of live PFE60-GFP infected red blood cells (20–28 h post invasion). The same punctate GFP signal was observed in trypsin treated infected red blood cells as in untreated cells indicating that PFE60 is not exposed on the surface of infected red blood cells. (- tryp) untreated cells; (+ tryp) trypsin treated cells; (+ tryp/PMSF) cells treated with trypsin plus protease inhibitor phenylmethane sulfonyl fluoride. The ‘PFE60-GFP’ column shows the fluorescence signal and the ‘Merge’

column shows the overlay of the fluorescence signal and the bright field image. Scale bar: 4 mm

Chang M, Faou P, Maier AG, Rug M. Plasmodium falciparum export protein PFE60 influences Maurer's cleft architecture and virulence complex composition. Int J Parasitol. 2017 Oct pii: S0020-7519(17)30302-8.

Other associated proteins

PFID Formal Annotation
PF3D7_0201900 erythrocyte membrane protein 3
PF3D7_0202200 EMP1-trafficking protein
PF3D7_0402400 Plasmodium exported protein, unknown function gametocyte exported protein 18
PF3D7_0501200 parasite-infected erythrocyte surface protein
PF3D7_0731100 gametocyte exported protein 11 EMP1-trafficking protein