5oo4

Streptomyces PAC13 with uridine

spinqualitylabelsall models 5oo4, resolution 1.60Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5oo4 is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: URI Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed The uridyl peptide antibiotics (UPAs), of which pacidamycin is a member, have a clinically unexploited mode of action and an unusual assembly. Perhaps the most striking feature of these molecules is the biosynthetically unique 3'-deoxyuridine that they share. This moiety is generated by an unusual, small and monomeric dehydratase, Pac13, which catalyses the dehydration of uridine-5'-aldehyde. Here we report the structural characterisation of Pac13 with a series of ligands, and gain insight into the enzyme's mechanism demonstrating that H42 is critical to the enzyme's activity and that the reaction is likely to proceed via an E1cB mechanism. The resemblance of the 3'-deoxy pacidamycin moiety with the synthetic anti-retrovirals, presents a potential opportunity for the utilisation of Pac13 in the biocatalytic generation of antiviral compounds. Short and Sweet: Pac13 is a Small, Monomeric Dehydratase that Mediates the Formation of the 3'- Deoxy Nucleoside of Pacidamycins.,Michailidou F, Chung CW, Brown MJB, Bent AF, Naismith JH, Leavens WJ, Lynn SM, Sharma SV, Goss RJM Angew Chem Int Ed Engl. 2017 Aug 8. doi: 10.1002/anie.201705639. PMID:28786545 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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