4AZD

T57V mutant of aspartate decarboxylase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.62 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.187 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Threonine 57 is Required for the Post-Translational Activation of Escherichia Coli Aspartate Alpha-Decarboxylase

Webb, M.E.Yorke, B.A.Kershaw, T.Lovelock, S.Lobley, C.M.C.Kilkenny, M.L.Smith, A.G.Blundell, T.L.Pearson, A.R.Abell, C.

(2014) Acta Crystallogr D Biol Crystallogr 70: 1166

  • DOI: https://doi.org/10.1107/S1399004713034275
  • Primary Citation of Related Structures:  
    4AZD

  • PubMed Abstract: 

    Aspartate α-decarboxylase is a pyruvoyl-dependent decarboxylase required for the production of β-alanine in the bacterial pantothenate (vitamin B5) biosynthesis pathway. The pyruvoyl group is formed via the intramolecular rearrangement of a serine residue to generate a backbone ester intermediate which is cleaved to generate an N-terminal pyruvoyl group. Site-directed mutagenesis of residues adjacent to the active site, including Tyr22, Thr57 and Tyr58, reveals that only mutation of Thr57 leads to changes in the degree of post-translational activation. The crystal structure of the site-directed mutant T57V is consistent with a non-rearranged backbone, supporting the hypothesis that Thr57 is required for the formation of the ester intermediate in activation.


  • Organizational Affiliation

    Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, England.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ASPARTATE 1-DECARBOXYLASE
A, B
143Escherichia coli K-12Mutation(s): 1 
EC: 4.1.1.11
UniProt
Find proteins for P0A790 (Escherichia coli (strain K12))
Explore P0A790 
Go to UniProtKB:  P0A790
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A790
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.62 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.187 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.92α = 90
b = 69.92β = 90
c = 217.72γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-07-25
    Type: Initial release
  • Version 1.1: 2014-04-09
    Changes: Database references
  • Version 1.2: 2014-04-16
    Changes: Database references
  • Version 1.3: 2019-05-08
    Changes: Data collection, Experimental preparation, Other
  • Version 1.4: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description