6sfg

CRYSTAL STRUCTURE OF DHQ1 FROM SALMONELLA TYPHI COVALENTLY MODIFIED BY COMPOUND 9

spinqualitylabelsall models 6sfg, resolution 1.23Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.23Å Ligands: FQZ, FSQ Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Disabling the bacterial capacity to cause infection is an innovative approach that has attracted significant attention to fight against superbugs. A relevant target for anti-virulence drug discovery is the type I dehydroquinase (DHQ1) enzyme. It was shown that the 2-hydroxyethylammonium derivative 3 has in vitro activity since it causes the covalent modification of the catalytic lysine residue of DHQ1. As this compound does not bear reactive electrophilic centers, how the chemical modification occurs is intriguing. We report here an integrated approach, which involves biochemical studies, X-ray crystallography and computational studies on the reaction path using combined quantum mechanics/molecular mechanics Umbrella Sampling Molecular Dynamics, that evidences that DHQ1 catalyzes its self-immolation by transforming the unreactive 2-hydroxyethylammonium group in 3 into an epoxide that triggers the lysine covalent modification. This finding might open opportunities for the design of lysine-targeted irreversible inhibitors bearing a 2-hydroxyethylammonium moiety as an epoxide proform, which to our knowledge has not been reported previously. Self-Immolation of a Bacterial Dehydratase Enzyme by its Epoxide Product.,Lence E, Maneiro M, Sanz-Gaitero M, van Raaij MJ, Thompson P, Hawkins AR, Gonzalez-Bello C Chemistry. 2020 Apr 7. doi: 10.1002/chem.202000759. PMID:32259333 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Dehydroquinase 3D structures

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