2j65

Structure of LpxC from Aquifex aeolicus in complex with UDP

spinqualitylabelsall models 2j65, resolution 2.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2j65 is a 2 chain structure with sequence from Aquifex aeolicus VF5. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.2Å Ligands: CL, MYR, UDP, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function LPXC_AQUAE Involved in the biosynthesis of lipid A, a phosphorylated glycolipid that anchors the lipopolysaccharide to the outer membrane of the cell (By similarity). Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed The structure of recombinant Aquifex aeolicus UDP-3-O-acyl-N-acetylglucosamine deacetylase (LpxC) in complex with UDP has been determined to a resolution of 2.2 A. Previous studies have characterized the binding sites of the fatty-acid and sugar moieties of the substrate, UDP-(3-O-hydroxymyristoyl)-N-acetylglucosamine, but not that of the nucleotide. The uracil-binding site is constructed from amino acids that are highly conserved across species. Hydrophobic associations with the Phe155 and Arg250 side chains in combination with hydrogen-bonding interactions with the main chain of Glu154 and the side chains of Tyr151 and Lys227 position the base. The phosphate and ribose groups are directed away from the active site and interact with Arg137, Lys156, Glu186 and Arg250. The orientation of the phosphate-ribose tail is not conducive to catalysis, perhaps owing to the position of an inhibitory Zn(2+). However, based on the position of uracil revealed in this study and on the previously reported complex of LpxC with an inhibitor, a model is proposed for substrate binding. The nucleotide-binding site of Aquifex aeolicus LpxC.,Buetow L, Dawson A, Hunter WN Acta Crystallogr Sect F Struct Biol Cryst Commun. 2006 Nov 1;62(Pt, 11):1082-6. Epub 2006 Oct 25. PMID:17077484 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also UDP-3-O-acyl-N-acetylglucosamine deacetylase

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