4ZU2

Pseudomonas aeruginosa AtuE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The Pseudomonas aeruginosa Isohexenyl Glutaconyl Coenzyme A Hydratase (AtuE) Is Upregulated in Citronellate-Grown Cells and Belongs to the Crotonase Family.

Poudel, N.Pfannstiel, J.Simon, O.Walter, N.Papageorgiou, A.C.Jendrossek, D.

(2015) Appl Environ Microbiol 81: 6558-6566

  • DOI: 10.1128/AEM.01686-15
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Pseudomonas aeruginosa is one of only a few Pseudomonas species that are able to use acyclic monoterpenoids, such as citronellol and citronellate, as carbon and energy sources. This is achieved by the acyclic terpene utilization pathway (Atu), which ...

    Pseudomonas aeruginosa is one of only a few Pseudomonas species that are able to use acyclic monoterpenoids, such as citronellol and citronellate, as carbon and energy sources. This is achieved by the acyclic terpene utilization pathway (Atu), which includes at least six enzymes (AtuA, AtuB, AtuCF, AtuD, AtuE, AtuG) and is coupled to a functional leucine-isovalerate utilization (Liu) pathway. Here, quantitative proteome analysis was performed to elucidate the terpene metabolism of P. aeruginosa. The proteomics survey identified 187 proteins, including AtuA to AtuG and LiuA to LiuE, which were increased in abundance in the presence of citronellate. In particular, two hydratases, AtuE and the PA4330 gene product, out of more than a dozen predicted in the P. aeruginosa proteome showed an increased abundance in the presence of citronellate. AtuE (isohexenyl-glutaconyl coenzyme A [CoA] hydratase; EC 4.2.1.57) most likely catalyzes the hydration of the unsaturated distal double bond in the isohexenyl-glutaconyl-CoA thioester to yield 3-hydroxy-3-isohexenyl-glutaryl-CoA. Determination of the crystal structure of AtuE at a 2.13-Å resolution revealed a fold similar to that found in the hydratase (crotonase) superfamily and provided insights into the nature of the active site. The AtuE active-site architecture showed a significantly broader cavity than other crotonase superfamily members, in agreement with the need to accommodate the branched isoprenoid unit of terpenes. Glu139 was identified to be a potential catalytic residue, while the backbone NH groups of Gly116 and Gly68 likely form an oxyanion hole. The present work deepens the understanding of terpene metabolism in Pseudomonas and may serve as a basis to develop new strategies for the biotechnological production of terpenoids.


    Organizational Affiliation

    Institute of Microbiology, Universität Stuttgart, Stuttgart, Germany dieter.jendrossek@imb.uni-stuttgart.de.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Putative isohexenylglutaconyl-CoA hydrataseA, B, C272Pseudomonas aeruginosaMutation(s): 0 
Gene Names: atuEPA2890
Find proteins for Q9HZV7 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9HZV7 
Go to UniProtKB:  Q9HZV7
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IOD
Query on IOD

Download CCD File 
A, B, C
IODIDE ION
I
XMBWDFGMSWQBCA-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.201 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 108.44α = 90
b = 133.97β = 139.46
c = 83.35γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-07-22
    Type: Initial release
  • Version 1.1: 2015-09-16
    Changes: Database references
  • Version 1.2: 2019-07-17
    Changes: Data collection