PES

PES (PF3D7_1107700), the Plasmodium falciparum ortholog of the nuclear pescadillo protein, was characterized as a physical interaction partner of PfYVH1, a dual-specificity zinc-finger phosphatase, an association taken to implicate PfYVH1 in the regulation of parasitic development (PMID:14698441). Beyond this single interaction, no further mechanistic detail about PES itself — its molecular activity, its own developmental function, or the consequence of the PfYVH1 interaction — has been characterized in the available corpus.

1. 2004 Low

   To place the P. falciparum pescadillo ortholog in a molecular context, its physical partners were sought, establishing a direct interaction with the dual-specificity phosphatase PfYVH1.

   Evidence Biochemical characterization of recombinant proteins with a protein–protein interaction (pulldown/co-precipitation) assay between PfPES and PfYVH1

   PMID:14698441

   Open questions at the time

   • Single interaction assay described without reciprocal validation; interaction not independently confirmed
   • No functional consequence of the PES–PfYVH1 interaction experimentally resolved
   • Intrinsic molecular activity and developmental role of PES itself undefined

• What PES does mechanistically — its own biochemical activity, subcellular localization in the parasite, and the developmental output of its interaction with PfYVH1 — remains unresolved.
• No functional or knockout phenotype for PES reported
• No structural model or defined enzymatic/regulatory activity
• Recruitment and pathway context of the PES–PfYVH1 complex unknown