2WKJ

Crystal structure of the E192N mutant of E. Coli N-acetylneuraminic acid lyase in complex with pyruvate at 1.45A resolution in space group P212121


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 

Starting Model: experimental
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This is version 2.2 of the entry. See complete history


Literature

Structure of an Escherichia coli N-acetyl-D-neuraminic acid lyase mutant, E192N, in complex with pyruvate at 1.45 angstrom resolution.

Campeotto, I.Carr, S.B.Trinh, C.H.Nelson, A.S.Berry, A.Phillips, S.E.Pearson, A.R.

(2009) Acta Crystallogr Sect F Struct Biol Cryst Commun 65: 1088-1090

  • DOI: https://doi.org/10.1107/S1744309109037403
  • Primary Citation of Related Structures:  
    2WKJ

  • PubMed Abstract: 

    The structure of a mutant variant of Escherichia coli N-acetyl-d-neuraminic acid lyase (NAL), E192N, in complex with pyruvate has been determined in a new crystal form. It crystallized in space group P2(1)2(1)2(1), with unit-cell parameters a = 78.3, b = 108.5, c = 148.3 angstrom. Pyruvate has been trapped in the active site as a Schiff base with the catalytic lysine (Lys165) without the need for reduction. Unlike the previously published crystallization conditions for the wild-type enzyme, in which a mother-liquor-derived sulfate ion is strongly bound in the catalytic pocket, the low-salt conditions described here will facilitate the determination of further E. coli NAL structures in complex with other activesite ligands.


  • Organizational Affiliation

    Astbury Centre for Structural Molecular Biology, University of Leeds, England.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
N-ACETYLNEURAMINATE LYASE
A, B, C, D
303Escherichia coliMutation(s): 1 
EC: 4.1.3.3
UniProt
Find proteins for P0A6L4 (Escherichia coli (strain K12))
Explore P0A6L4 
Go to UniProtKB:  P0A6L4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A6L4
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78.329α = 90
b = 108.049β = 90
c = 148.309γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-12-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2018-12-19
    Changes: Advisory, Data collection, Database references, Derived calculations
  • Version 2.0: 2023-11-15
    Changes: Atomic model, Data collection, Database references, Derived calculations, Other
  • Version 2.1: 2023-11-29
    Changes: Data collection
  • Version 2.2: 2023-12-13
    Changes: Refinement description