2XED

Nocardia farcinica maleate cis-trans isomerase C194S mutant with a covalently bound succinylcysteine intermediate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 

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


Literature

A Covalent Succinylcysteine-Like Intermediate in the Enzyme-Catalyzed Transformation of Maleate to Fumarate by Maleate Isomerase.

Fisch, F.Fleites, C.M.Delenne, M.Baudendistel, N.Hauer, B.Turkenburg, J.P.Hart, S.Bruce, N.C.Grogan, G.

(2010) J Am Chem Soc 132: 11455

  • DOI: https://doi.org/10.1021/ja1053576
  • Primary Citation of Related Structures:  
    2XEC, 2XED

  • PubMed Abstract: 

    Maleate isomerase (MI), a member of the Asp/Glu racemase superfamily, catalyzes cis-trans isomerization of the C2-C3 double bond in maleate to yield fumarate. Mutational studies, in conjunction with the structure of the C194A mutant of Nocardia farcinica MI cocrystallized with maleate, have revealed an unprecedented mode of catalysis for the superfamily in which the isomerization reaction is initiated by nucleophilic attack of cysteine at the double bond, yielding a covalent succinylcysteine-like intermediate.


  • Organizational Affiliation

    York Structural Biology Laboratory, Department of Chemistry, University of York, York YO10 5YW, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PUTATIVE MALEATE ISOMERASE
A, B, C, D
273Nocardia farcinica IFM 10152Mutation(s): 1 
EC: 5.2.1.1
UniProt
Find proteins for Q5YXQ1 (Nocardia farcinica (strain IFM 10152))
Explore Q5YXQ1 
Go to UniProtKB:  Q5YXQ1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5YXQ1
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.98α = 90
b = 85.67β = 90
c = 239.94γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-08-18
    Type: Initial release
  • Version 1.1: 2011-06-09
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description