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Updated: Jun 14, 2025
Genetic Manipulation in Δku80 Strains for Functional Genomic Analysis of Toxoplasma gondii
Published on: July 12, 2013
A Toxoplasma gondii thioredoxin with cell adhesion and antioxidant function
Dawei Wang1,2, Yuyi Shi1,2, Ziwen Cheng2,3
1College of Animal Husbandry and Veterinary Medicine, Jinzhou Medical University, Jinzhou, Liaoning, China.
Toxoplasma gondii Trx21 protein aids parasite invasion by adhering to host cells and offers protection against oxidative stress. This study characterizes Trx21's role in host cell interaction and damage defense.
Area of Science:
- Parasitology
- Molecular Biology
- Cell Biology
Background:
- Toxoplasma gondii (T. gondii) is a protozoan parasite causing toxoplasmosis.
- T. gondii invasion involves proteins binding to host cell receptors like GAG-binding motifs.
- Limited research exists on the T. gondii Trx21 protein (TGME49_216510).
Purpose of the Study:
- To characterize the T. gondii Trx21 protein.
- To investigate its role in host cell adhesion and oxidative stress resistance.
Main Methods:
- Bioinformatics analysis of Trx21.
- Protein expression, purification, and characterization (SDS-PAGE, Western blot).
- Antioxidant assays, cell adhesion experiments, and subcellular localization (IFA) in T. gondii.
Main Results:
- Trx21 contains a transmembrane region, GAG-binding motifs, and a Thioredoxin-like domain.
- Recombinant Trx21-His (31 kDa) and Trx21-GST (55 kDa) were produced.
- Trx21 localizes to the cytoplasm, protects DNA from oxidative damage, and adheres to Vero cells.
Conclusions:
- Trx21 is crucial for T. gondii host cell interaction.
- Trx21 contributes to defense against oxidative damage.
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