7KEQ

avibactam-CDD-1 6 minute complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.174 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Inhibition of the Clostridioides difficile Class D beta-Lactamase CDD-1 by Avibactam.

Stewart, N.K.Toth, M.Stasyuk, A.Lee, M.Smith, C.A.Vakulenko, S.B.

(2021) ACS Infect Dis 7: 1164-1176

  • DOI: https://doi.org/10.1021/acsinfecdis.0c00714
  • Primary Citation of Related Structures:  
    7KEP, 7KEQ, 7KER

  • PubMed Abstract: 

    Avibactam is a potent diazobicyclooctane inhibitor of class A and C β-lactamases. The inhibitor also exhibits variable activity against some class D enzymes from Gram-negative bacteria; however, its interaction with recently discovered class D β-lactamases from Gram-positive bacteria has not been studied. Here, we describe microbiological, kinetic, and mass spectrometry studies of the interaction of avibactam with CDD-1, a class D β-lactamase from the clinically important pathogen Clostridioides difficile , and show that avibactam is a potent irreversible mechanism-based inhibitor of the enzyme. X-ray crystallographic studies at three time-points demonstrate the rapid formation of a stable CDD-1-avibactam acyl-enzyme complex and highlight differences in the anchoring of the inhibitor by class D enzymes from Gram-positive and Gram-negative bacteria.


  • Organizational Affiliation

    Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-lactamase312Clostridioides difficileMutation(s): 2 
Gene Names: blaR1_4blaR1_1E5F39_11445SAMEA2239407_03320SAMEA3374989_01677
EC: 3.5.2.6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NXL (Subject of Investigation/LOI)
Query on NXL

Download Ideal Coordinates CCD File 
B [auth A](2S,5R)-1-formyl-5-[(sulfooxy)amino]piperidine-2-carboxamide
C7 H13 N3 O6 S
WJDGWXPPFHLLNL-RITPCOANSA-N
FYG
Query on FYG

Download Ideal Coordinates CCD File 
C [auth A](2S,5R)-7-oxo-6-(sulfooxy)-1,6-diazabicyclo[3.2.1]octane-2-carboxamide
C7 H11 N3 O6 S
NDCUAPJVLWFHHB-UHNVWZDZSA-N
MPD
Query on MPD

Download Ideal Coordinates CCD File 
I [auth A](4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
KCX
Query on KCX
A
L-PEPTIDE LINKINGC7 H14 N2 O4LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.174 
  • Space Group: P 43 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 123.536α = 90
b = 123.536β = 90
c = 123.536γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
Aimlessdata scaling
REFMACphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-01-20
    Type: Initial release
  • Version 1.1: 2021-05-26
    Changes: Database references