3ZFH

Crystal structure of Pseudomonas aeruginosa inosine 5'-monophosphate dehydrogenase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.148 
  • R-Value Observed: 0.150 

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


Literature

Structure of Pseudomonas Aeruginosa Inosine 5'-Monophosphate Dehydrogenase

Rao, V.A.Shepherd, S.M.Owen, R.Hunter, W.N.

(2013) Acta Crystallogr Sect F Struct Biol Cryst Commun 69: 243

  • DOI: https://doi.org/10.1107/S1744309113002352
  • Primary Citation of Related Structures:  
    3ZFH

  • PubMed Abstract: 

    Inosine 5'-monophosphate dehydrogenase (IMPDH) represents a potential antimicrobial drug target. The crystal structure of recombinant Pseudomonas aeruginosa IMPDH has been determined to a resolution of 2.25 Å. The structure is a homotetramer of subunits dominated by a (β/α)8-barrel fold, consistent with other known structures of IMPDH. Also in common with previous work, the cystathionine β-synthase domains, residues 92-204, are not present in the model owing to disorder. However, unlike the majority of available structures, clearly defined electron density exists for a loop that creates part of the active site. This loop, composed of residues 297-315, links α8 and β9 and carries the catalytic Cys304. P. aeruginosa IMPDH shares a high level of sequence identity with bacterial and protozoan homologues, with residues involved in binding substrate and the NAD+ cofactor being conserved. Specific differences that have been proven to contribute to selectivity against the human enzyme in a study of Cryptosporidium parvum IMPDH are also conserved, highlighting the potential value of IMPDH as a drug target.


  • Organizational Affiliation

    Division of Biological Chemistry and Drug Discovery, College of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, Scotland.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
INOSINE 5'-MONOPHOSPHATE DEHYDROGENASE510Pseudomonas aeruginosa PAO1Mutation(s): 0 
EC: 1.1.1.205
UniProt
Find proteins for Q9HXM5 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9HXM5 
Go to UniProtKB:  Q9HXM5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9HXM5
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download Ideal Coordinates CCD File 
B [auth A]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.148 
  • R-Value Observed: 0.150 
  • Space Group: I 4
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 115.546α = 90
b = 115.546β = 90
c = 56.443γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-01-16
    Type: Initial release
  • Version 1.1: 2013-03-13
    Changes: Database references
  • Version 1.2: 2013-04-17
    Changes: Database references
  • Version 1.3: 2023-12-20
    Changes: Data collection, Database references, Other, Refinement description