Download MendeleyCrystal structures of lipoglycopeptide antibiotic deacetylases: implications for the biosynthesis of a40926 and teicoplanin.
Zou, Y., Brunzelle, J.S., Nair, S.K.(2008) Chem Biol 15: 533-545
- PubMed: 18559264
- DOI: https://doi.org/10.1016/j.chembiol.2008.05.009
- Primary Citation of Related Structures:
3DFF, 3DFI, 3DFK, 3DFM - PubMed Abstract:
The lipoglycopeptide antibiotics teicoplanin and A40926 have proven efficacy against Gram-positive pathogens. These drugs are distinguished from glycopeptide antibiotics by N-linked long chain acyl-D-glucosamine decorations that contribute to antibacterial efficacy. During the biosynthesis of lipoglycopeptides, tailoring glycosyltransferases attach an N-acetyl-D-glucosamine to the aglycone, and this N-acetyl-glucosaminyl pseudoaglycone is deacetylated prior to long chain hydrocarbon attachment. Here we present several high-resolution crystal structures of the pseudoaglycone deacetylases from the biosynthetic pathways of teicoplanin and A40926. The cocrystal structure of the teicoplanin pseudoaglycone deacetylase with a fatty acid product provides further insights into the roles of active-site residues, and suggests mechanistic similarities with structurally distinct zinc deacetylases, such as peptidoglycan deacetylase and LpxC. A unique, structurally mobile capping lid, located at the apex of these pseudoaglycone deacetylases, likely serves as a determinant of substrate specificity.
Organizational Affiliation:
Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
