3QT6

Crystal structure of Staphylococcus epidermidis mevalonate diphosphate decarboxylase complexed with inhibitor DPGP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Crystal structures of Staphylococcus epidermidis mevalonate diphosphate decarboxylase bound to inhibitory analogs reveal new insight into substrate binding and catalysis.

Barta, M.L.Skaff, D.A.McWhorter, W.J.Herdendorf, T.J.Miziorko, H.M.Geisbrecht, B.V.

(2011) J Biol Chem 286: 23900-23910

  • DOI: https://doi.org/10.1074/jbc.M111.242016
  • Primary Citation of Related Structures:  
    3QT5, 3QT6, 3QT7, 3QT8

  • PubMed Abstract: 

    The polyisoprenoid compound undecaprenyl phosphate is required for biosynthesis of cell wall peptidoglycans in gram-positive bacteria, including pathogenic Enterococcus, Streptococcus, and Staphylococcus spp. In these organisms, the mevalonate pathway is used to produce the precursor isoprenoid, isopentenyl 5-diphosphate. Mevalonate diphosphate decarboxylase (MDD) catalyzes formation of isopentenyl 5-diphosphate in an ATP-dependent irreversible reaction and is therefore an attractive target for inhibitor development that could lead to new antimicrobial agents. To facilitate exploration of this possibility, we report the crystal structure of Staphylococcus epidermidis MDD (1.85 Å resolution) and, to the best of our knowledge, the first structures of liganded MDD. These structures include MDD bound to the mevalonate 5-diphosphate analogs diphosphoglycolyl proline (2.05 Å resolution) and 6-fluoromevalonate diphosphate (FMVAPP; 2.2 Å resolution). Comparison of these structures provides a physical basis for the significant differences in K(i) values observed for these inhibitors. Inspection of enzyme/inhibitor structures identified the side chain of invariant Ser(192) as making potential contributions to catalysis. Significantly, Ser → Ala substitution of this side chain decreases k(cat) by ∼10(3)-fold, even though binding interactions between FMVAPP and this mutant are similar to those observed with wild type MDD, as judged by the 2.1 Å cocrystal structure of S192A with FMVAPP. Comparison of microbial MDD structures with those of mammalian counterparts reveals potential targets at the active site periphery that may be exploited to selectively target the microbial enzymes. These studies provide a structural basis for previous observations regarding the MDD mechanism and inform future work toward rational inhibitor design.


  • Organizational Affiliation

    Division of Cell Biology and Biophysics, School of Biological Sciences, University of Missouri-Kansas City, Kansas City, Missouri 64110, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mevalonate diphosphate decarboxylase
A, B
332Staphylococcus epidermidisMutation(s): 0 
Gene Names: mvaD
EC: 4.1.1.33
UniProt
Find proteins for Q9FD73 (Staphylococcus epidermidis)
Explore Q9FD73 
Go to UniProtKB:  Q9FD73
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9FD73
Sequence Annotations
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  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
2P0 PDBBind:  3QT6 Ki: 4300 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.67α = 90
b = 101.442β = 90
c = 154.639γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-05-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2011-11-23
    Changes: Database references
  • Version 1.3: 2023-09-13
    Changes: Data collection, Database references, Derived calculations, Refinement description