Download MendeleyThe Structure of VanX Reveals a Novel Amino-Dipeptidase Involved in Mediating Transposon-Based Vancomycin Resistance
Bussiere, D.E., Pratt, S.D., Katz, L., Severin, J.M., Holzman, T., Park, C.H.(1998) Mol Cell 2: 75-84
- PubMed: 9702193
- DOI: https://doi.org/10.1016/s1097-2765(00)80115-x
- Primary Citation of Related Structures:
1R44 - PubMed Abstract:
VanX is a zinc-dependent D-alanyl-D-alanine dipeptidase that is a critical component in a system that mediates transposon-based vancomycin resistance in enterococci. It is also a key drug target in circumventing clinical vancomycin resistance. The structure of VanX from E. faecium has been solved by X-ray crystallography and reveals a Zn(2+)-dipeptidase with a unique overall fold and a well-defined active site confined within a cavity of limited size. The crystal structures of VanX, the VanX:D-alanyl-D-alanine complex, the VanX:D-alanine complex, and VanX in complex with phosphonate and phosphinate transition-state analog inhibitors, are also presented at high resolution. Structural homology searches of known structures revealed that the fold of VanX is similar to those of two proteins: the N-terminal fragment of murine Sonic hedgehog and the Zn(2+)-dependent N-acyl-D-alanyl-D-alanine carboxypeptidase of S. albus G.
Organizational Affiliation:
Laboratory of Protein Crystallography, Abbott Laboratories, Illinois 60064, USA. bussierd@tvsfrank.pprd.abbott.com
