8QZW | pdb_00008qzw

Crystal structure of deoxyhypusine synthase from Trichomonas vaginalis

PDB DOI: https://doi.org/10.2210/pdb8QZW/pdb

Classification: TRANSFERASE
Organism(s): Trichomonas vaginalis
Expression System: Escherichia coli BL21(DE3)
Mutation(s): No

Deposited: 2023-10-30 Released: 2024-07-03
Deposition Author(s): Wator, E., Wilk, P., Grudnik, P.
Funding Organization(s): Polish National Science Centre

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.68 Å
R-Value Free:
0.155 (Depositor), 0.155 (DCC)
R-Value Work:
0.148 (Depositor), 0.148 (DCC)
R-Value Observed:
0.148 (Depositor)

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.2 of the entry. See complete history.

Literature

Structural characterization of the (deoxy)hypusination in Trichomonas vaginalis questions the bifunctionality of deoxyhypusine synthase.

Wator, E., Wilk, P., Kochanowski, P., Grudnik, P.

(2024) FEBS J 291: 3856-3869

PubMed: 38923395 Search on PubMed
DOI: https://doi.org/10.1111/febs.17207
Primary Citation Related Structures:
8QZV, 8QZW, 8QZX

PubMed Abstract:
Trichomonas vaginalis, the causative agent of trichomoniasis, is a prevalent anaerobic protozoan parasite responsible for the most common nonviral sexually transmitted infection globally. While metronidazole and its derivatives are approved drugs for this infection, rising resistance necessitates the exploration of new antiparasitic therapies. Protein posttranslational modifications (PTMs) play crucial roles in cellular processes, and among them, hypusination, involving eukaryotic translation factor 5A (eIF5A), has profound implications. Despite extensive studies in various organisms, the role of hypusination in T. vaginalis and its potential impact on parasite biology and pathogenicity remain poorly understood. This study aims to unravel the structural basis of the hypusination pathway in T. vaginalis using X-ray crystallography and cryo-electron microscopy. The results reveal high structural homology between T. vaginalis and human orthologs, providing insights into the molecular architecture of eIF5A and deoxyhypusine synthase (DHS) and their interaction. Contrary to previous suggestions of bifunctionality, our analyses indicate that the putative hydroxylation site in tvDHS is nonfunctional, and biochemical assays demonstrate exclusive deoxyhypusination capability. These findings challenge the notion of tvDHS functioning as both deoxyhypusine synthase and hydroxylase. The study enhances understanding of the hypusination pathway in T. vaginalis, shedding light on its functional relevance and potential as a drug target, and contributing to the development of novel therapeutic strategies against trichomoniasis.

Organizational Affiliation

Małopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland.

Macromolecule Content

Total Structure Weight: 42.28 kDa
Atom Count: 3,329
Modeled Residue Count: 359
Deposited Residue Count: 364
Unique protein chains: 1

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Deoxyhypusine synthase related protein, putative	A	364	Trichomonas vaginalis	Mutation(s): 0 Gene Names: TVAG_359990 EC: 2.5.1.46
UniProt
Find proteins for F1AQF9 (Trichomonas vaginalis) Explore F1AQF9 Go to UniProtKB: F1AQF9
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	F1AQF9
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
NAD (Subject of Investigation/LOI) Query on NAD Download:Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A] mmCIF format, chain B [auth A]	B [auth A]	NICOTINAMIDE-ADENINE-DINUCLEOTIDE C₂₁ H₂₇ N₇ O₁₄ P₂ BAWFJGJZGIEFAR-NNYOXOHSSA-N		Interactions Focus chain B [auth A] Interactions & Density Focus chain B [auth A]
SO4 Query on SO4 Download:Ideal Coordinates CCD File SDF format, chain C [auth A] SDF format, chain D [auth A] SDF format, chain E [auth A] SDF format, chain F [auth A] SDF format, chain G [auth A] SDF format, chain H [auth A] SDF format, chain I [auth A] MOL2 format, chain C [auth A] MOL2 format, chain D [auth A] MOL2 format, chain E [auth A] MOL2 format, chain F [auth A] MOL2 format, chain G [auth A] MOL2 format, chain H [auth A] MOL2 format, chain I [auth A] mmCIF format, chain C [auth A] mmCIF format, chain D [auth A] mmCIF format, chain E [auth A] mmCIF format, chain F [auth A] mmCIF format, chain G [auth A] mmCIF format, chain H [auth A] mmCIF format, chain I [auth A]	C [auth A] D [auth A] E [auth A] F [auth A] G [auth A] C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain C [auth A] Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Interactions & Density Focus chain C [auth A] Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A]
GOL Query on GOL Download:Ideal Coordinates CCD File SDF format, chain J [auth A] SDF format, chain K [auth A] SDF format, chain L [auth A] SDF format, chain M [auth A] MOL2 format, chain J [auth A] MOL2 format, chain K [auth A] MOL2 format, chain L [auth A] MOL2 format, chain M [auth A] mmCIF format, chain J [auth A] mmCIF format, chain K [auth A] mmCIF format, chain L [auth A] mmCIF format, chain M [auth A]	J [auth A], K [auth A], L [auth A], M [auth A]	GLYCEROL C₃ H₈ O₃ PEDCQBHIVMGVHV-UHFFFAOYSA-N		Interactions Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Interactions & Density Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A]