7QDW image
Deposition Date 2021-11-30
Release Date 2022-03-30
Last Version Date 2024-06-19
Entry Detail
PDB ID:
7QDW
Title:
Solution structure of the complex between plasmodial ZNHIT3 and NUFIP1 proteins
Biological Source:
Source Organism:
Method Details:
Experimental Method:
Conformers Calculated:
100
Conformers Submitted:
20
Selection Criteria:
structures with the lowest restraint energy
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Zinc finger protein, putative
Gene (Uniprot):PF3D7_0916900
Chain IDs:A
Chain Length:72
Number of Molecules:1
Biological Source:Plasmodium falciparum (isolate 3D7)
Polymer Type:polypeptide(L)
Molecule:NUFIP1 domain-containing protein
Gene (Uniprot):PF3D7_1473900
Chain IDs:B
Chain Length:25
Number of Molecules:1
Biological Source:Plasmodium falciparum (isolate 3D7)
Ligand Molecules
Primary Citation
Structural Analysis of the Plasmodial Proteins ZNHIT3 and NUFIP1 Provides Insights into the Selectivity of a Conserved Interaction.
Biochemistry 61 479 493 (2022)
PMID: 35315277 DOI: 10.1021/acs.biochem.1c00792

Abstact

Malaria is a widespread and lethal disease caused by the Plasmodium parasites that can infect human beings through Anopheles mosquitoes. For that reason, the biology of Plasmodium needs to be studied to develop antimalarial treatments. By determining the three-dimensional structures of macromolecules, structural biology helps to understand the function of proteins and can reveal how interactions occur between biological partners. Here, we studied the ZNHIT3 and NUFIP1 proteins from Plasmodium falciparum, two proteins tightly linked to the ribosome biology. Due to their important functions in post-translational modifications of ribosomal RNAs and in ribophagy, these proteins participate in the survival of cells. In this study, we solved the three-dimensional structure of a thermally stable and species-dependent complex between fragments of these proteins. Our results were compared to the AlphaFold predictions, which motivated the study of the free ZNHIT3 fragment that binds NUFIP1. We showed that the latter fragment multimerized in vitro but also had the inner ability to change its conformation to escape the solvent exposition of key hydrophobic residues involved in the interaction with NUFIP1. Our data could open the gate to selective drug discovery processes involving these two proteins.

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Primary Citation of related structures