4MUQ

Crystal Structure of Vancomycin Resistance D,D-dipeptidase VanXYg in complex with D-Ala-D-Ala phosphinate analog


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.36 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.163 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural basis for the evolution of vancomycin resistance D,D-peptidases.

Meziane-Cherif, D.Stogios, P.J.Evdokimova, E.Savchenko, A.Courvalin, P.

(2014) Proc Natl Acad Sci U S A 111: 5872-5877

  • DOI: 10.1073/pnas.1402259111
  • Primary Citation of Related Structures:  
    4OAK, 4MUT, 4MUQ, 4MUR, 4MUS, 4F78

  • PubMed Abstract: 
  • Vancomycin resistance in Gram-positive bacteria is due to production of cell-wall precursors ending in D-Ala-D-Lac or D-Ala-D-Ser, to which vancomycin exhibits low binding affinities, and to the elimination of the high-affinity precursors ending in D-Ala-D-Ala ...

    Vancomycin resistance in Gram-positive bacteria is due to production of cell-wall precursors ending in D-Ala-D-Lac or D-Ala-D-Ser, to which vancomycin exhibits low binding affinities, and to the elimination of the high-affinity precursors ending in D-Ala-D-Ala. Depletion of the susceptible high-affinity precursors is catalyzed by the zinc-dependent D,D-peptidases VanX and VanY acting on dipeptide (D-Ala-D-Ala) or pentapeptide (UDP-MurNac-L-Ala-D-Glu-L-Lys-D-Ala-D-Ala), respectively. Some of the vancomycin resistance operons encode VanXY D,D-carboxypeptidase, which hydrolyzes both di- and pentapeptide. The molecular basis for the diverse specificity of Van D,D-peptidases remains unknown. We present the crystal structures of VanXYC and VanXYG in apo and transition state analog-bound forms and of VanXYC in complex with the D-Ala-D-Ala substrate and D-Ala product. Structural and biochemical analysis identified the molecular determinants of VanXY dual specificity. VanXY residues 110-115 form a mobile cap over the catalytic site, whose flexibility is involved in the switch between di- and pentapeptide hydrolysis. Structure-based alignment of the Van D,D-peptidases showed that VanY enzymes lack this element, which promotes binding of the penta- rather than that of the dipeptide. The structures also highlight the molecular basis for selection of D-Ala-ending precursors over the modified resistance targets. These results illustrate the remarkable adaptability of the D,D-peptidase fold in response to antibiotic pressure via evolution of specific structural elements that confer hydrolytic activity against vancomycin-susceptible peptidoglycan precursors.


    Organizational Affiliation

    Unité des Agents Antibactériens, Institut Pasteur, 75724 Paris Cedex 15, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
D,D-dipeptidase/D,D-carboxypeptidaseA255Enterococcus faecalisMutation(s): 0 
Gene Names: vanXYGvanYG2
Find proteins for Q9KHL8 (Enterococcus faecalis)
Explore Q9KHL8 
Go to UniProtKB:  Q9KHL8
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PE3
Query on PE3

Download Ideal Coordinates CCD File 
H [auth A], I [auth A], J [auth A], K [auth A]3,6,9,12,15,18,21,24,27,30,33,36,39-TRIDECAOXAHENTETRACONTANE-1,41-DIOL
C28 H58 O15
ILLKMACMBHTSHP-UHFFFAOYSA-N
 Ligand Interaction
LY0
Query on LY0

Download Ideal Coordinates CCD File 
C [auth A](2R)-3-[(R)-[(1R)-1-aminoethyl](hydroxy)phosphoryl]-2-methylpropanoic acid
C6 H14 N O4 P
XXVGIEKADYFHOF-CRCLSJGQSA-N
 Ligand Interaction
2D8
Query on 2D8

Download Ideal Coordinates CCD File 
D [auth A](2R)-3-[(R)-[(1S)-1-aminoethyl](hydroxy)phosphoryl]-2-methylpropanoic acid
C6 H14 N O4 P
XXVGIEKADYFHOF-WHFBIAKZSA-N
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
F [auth A], G [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

Download Ideal Coordinates CCD File 
B [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

Download Ideal Coordinates CCD File 
E [auth A]1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 38.895α = 90
b = 43.728β = 99.2
c = 80.236γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHENIXmodel building
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-10-09
    Type: Initial release
  • Version 1.1: 2014-01-22
    Changes: Other
  • Version 1.2: 2014-04-23
    Changes: Database references
  • Version 1.3: 2014-05-14
    Changes: Database references