8pdd

Thioredoxin glutathione reductase of Schistosoma mansoni at 1.25A resolution.

spinqualitylabelsall models 8pdd, resolution 1.25Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 8pdd is a 2 chain structure with sequence from Schistosoma mansoni. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.25Å Ligands: FAD, GOL, MG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q962Y6_SCHMA Publication Abstract from PubMed Schistosomiasis is caused by parasites of the genus Schistosoma, which infect more than 200 million people. Praziquantel (PZQ) has been the main drug for controlling schistosomiasis for over four decades, but despite that it is ineffective against juvenile worms and size and taste issues with its pharmaceutical forms impose challenges for treating school-aged children. It is also important to note that PZQ resistant strains can be generated in laboratory conditions and observed in the field, hence its extensive use in mass drug administration programs raises concerns about resistance, highlighting the need to search for new schistosomicidal drugs. Schistosomes survival relies on the redox enzyme thioredoxin glutathione reductase (TGR), a validated target for the development of new anti-schistosomal drugs. Here we report a high-throughput fragment screening campaign of 768 compounds against S. mansoni TGR (SmTGR) using X-ray crystallography. We observed 49 binding events involving 35 distinct molecular fragments which were found to be distributed across 16 binding sites. Most sites are described for the first time within SmTGR, a noteworthy exception being the "doorstop pocket" near the NADPH binding site. We have compared results from hotspots and pocket druggability analysis of SmTGR with the experimental binding sites found in this work, with our results indicating only limited coincidence between experimental and computational results. Finally, we discuss that binding sites at the doorstop/NADPH binding site and in the SmTGR dimer interface, should be prioritized for developing SmTGR inhibitors as new antischistosomal drugs. Fragment library screening by X-ray crystallography and binding site analysis on thioredoxin glutathione reductase of Schistosoma mansoni.,de Souza Neto LR, Montoya BO, Brandao-Neto J, Verma A, Bowyer S, Moreira-Filho JT, Dantas RF, Neves BJ, Andrade CH, von Delft F, Owens RJ, Furnham N, Silva-Jr FP Sci Rep. 2024 Jan 18;14(1):1582. doi: 10.1038/s41598-024-52018-2. PMID:38238498 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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