PF3D7_1323500 PEXEL protease plasmepsin V

Putative PfGRP170 apicoplast transit peptide localizes to the ER and conditional inhibition of PfGRP170 does not affect trafficking of apicoplast proteins. Upper panel: PfGRP170’s putative apicoplast transit peptide was fused to GFP and transfected into 3D7 parasites. Parasites were fixed with acetone and stained with DAPI, anti-GFP (to label the PfGRP170 putative transit peptide) and either anti-PfPMV (ER), anti-PfERD2 (Golgi), or anti-Cpn60 (Apicoplast) to determine subcellular localization. The images were taken with Delta Vision II, deconvolved, and are displayed as a maximum intensity projection. The scale bar is 5μm. Lower panel: Synchronized ring stage PfGRP170 parasites were incubated for 24 hours with and without TMP. Following the incubation, the parasites were fixed with paraformaldehyde and stained with DAPI, anti-GFP (PfGRP170) and anti-Cpn60 (Apicoplast). Images were taken as a Z-stack using super resolution microscopy and SIM processing was performed on the Z-stacks. Images are displayed as a maximum intensity projection. The scale bar is 2μm.

Kudyba HM, Cobb DW, Fierro MA, Florentin A, Ljolje D, Singh B, Lucchi NW, Muralidharan V. The ER chaperone PfGRP170 is essential for asexual development and is linked to stress response in malaria parasites. Cell Microbiol. 2019 May 14:e13042.

Other associated proteins

PFID Formal Annotation
PF3D7_0708800 PfHsp70-z
PF3D7_1232100 60 kDa chaperonin
PF3D7_1353600 ER lumen protein retaining receptor