4UIR

Structure of oleate hydratase from Elizabethkingia meningoseptica


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.198 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Literature

Structure-Based Mechanism of Oleate Hydratase from Elizabethkingia Meningoseptica.

Engleder, M.Pavkov-Keller, T.Emmerstorfer, A.Hromic, A.Schrempf, S.Steinkellner, G.Wriessnegger, T.Leitner, E.Strohmeier, G.A.Kaluzna, I.Mink, D.Schurmann, M.Wallner, S.Macheroux, P.Gruber, K.Pichler, H.

(2015) Chembiochem 16: 1730

  • DOI: https://doi.org/10.1002/cbic.201500269
  • Primary Citation of Related Structures:  
    4UIR

  • PubMed Abstract: 

    Hydratases provide access to secondary and tertiary alcohols by regio- and/or stereospecifically adding water to carbon-carbon double bonds. Thereby, hydroxy groups are introduced without the need for costly cofactor recycling, and that makes this approach highly interesting on an industrial scale. Here we present the first crystal structure of a recombinant oleate hydratase originating from Elizabethkingia meningoseptica in the presence of flavin adenine dinucleotide (FAD). A structure-based mutagenesis study targeting active site residues identified E122 and Y241 as crucial for the activation of a water molecule and for protonation of the double bond, respectively. Moreover, we also observed that two-electron reduction of FAD results in a sevenfold increase in the substrate hydration rate. We propose the first reaction mechanism for this enzyme class that explains the requirement for the flavin cofactor and the involvement of conserved amino acid residues in this regio- and stereoselective hydration.


  • Organizational Affiliation

    Institute of Molecular Biotechnology, NAWI Graz, Graz University of Technology, Petersgasse 14/2, 8010 Graz (Austria).


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
OLEATE HYDRATASE
A, B
646Elizabethkingia meningosepticaMutation(s): 0 
EC: 4.2.1.53
UniProt
Find proteins for C7DLJ6 (Elizabethkingia meningoseptica)
Explore C7DLJ6 
Go to UniProtKB:  C7DLJ6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupC7DLJ6
Sequence Annotations
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.198 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 84.174α = 90
b = 143.93β = 90
c = 155.785γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2015-07-01
    Type: Initial release
  • Version 1.1: 2015-08-19
    Changes: Database references
  • Version 1.2: 2024-01-10
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description