1c0r

COMPLEX OF VANCOMYCIN WITH D-LACTIC ACID

spinqualitylabelsall models 1c0r, resolution 1.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1c0r is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: BGC, CL, LAC, RER NonStd Res: 3FG, GHP, MLU, OMY, OMZ Related: 1aa5, 1c0q, 1fvm, 1gac, 1ghg, 1pn3, 1pnv, 1qd8, 1rrv, 1sho Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Bacterial resistance to vancomycin has been attributed to the loss of an intermolecular hydrogen bond between vancomycin and its peptidoglycan target when cell wall biosynthesis proceeds via depsipeptide intermediates rather than the usual polypeptide intermediates. To investigate the relative importance of this hydrogen bond to vancomycin binding, we have determined crystal structures at 1.0 A resolution for the vancomycin complexes with three ligands that mimic peptides and depsipeptides found in vancomycin-sensitive and vancomycin-resistant bacteria: N-acetylglycine, D-lactic acid, and 2-acetoxy-D-propanoic acid. These, in conjunction with structures that have been reported previously, indicate higher-affinity ligands elicit a structural change in the drug not seen with these low-affinity ligands. They also enable us to define a minimal set of drug-ligand interactions necessary to confer higher-affinity binding on a ligand. Most importantly, these structures point to factors in addition to the loss of an intermolecular hydrogen bond that must be invoked to explain the weaker affinity of vancomycin for depsipeptide ligands. These factors are important considerations for the design of vancomycin analogues to overcome vancomycin resistance. Vancomycin binding to low-affinity ligands: delineating a minimum set of interactions necessary for high-affinity binding.,Loll PJ, Kaplan J, Selinsky BS, Axelsen PH J Med Chem. 1999 Nov 4;42(22):4714-9. PMID:10579833 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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