4AST

The apo structure of a bacterial aldo-keto reductase AKR14A1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.38 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.241 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

The Diversity of Microbial Aldo/Keto Reductases from Escherichia Coli K12.

Lapthorn, A.J.Zhu, X.Ellis, E.M.

(2013) Chem Biol Interact 202: 168

  • DOI: https://doi.org/10.1016/j.cbi.2012.10.008
  • Primary Citation of Related Structures:  
    4AST, 4AUB

  • PubMed Abstract: 

    The genome of Escherichia coli K12 contains 9 open reading frames encoding aldo/keto reductases (AKRs) that are differentially regulated and sequence diverse. A significant amount of data is available for the E. coli AKRs through the availability of gene knockouts and gene expression studies, which adds to the biochemical and kinetic data. This together with the availability of crystal structures for nearly half of the E. coli AKRs and homologues of several others provides an opportunity to look at the diversity of these representative bacterial AKRs. Based around the common AKR fold of (β/α)8 barrel with two additional α-helices, the E. coli AKRs have a loop structure that is more diverse than their mammalian counterparts, creating a variety of active site architectures. Nearly half of the AKRs are expected to be monomeric, but there are examples of dimeric, trimeric and octameric enzymes, as well as diversity in specificity for NAD as well as NADP as a cofactor. However in functional assignments and characterisation of enzyme activities there is a paucity of data when compared to the mammalian AKR enzymes.


  • Organizational Affiliation

    School of Chemistry, University of Glasgow, Glasgow, United Kingdom. adrian.lapthorn@glasgow.ac.uk


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ALDO-KETO REDUCTASE AKR14A1
A, B, C, D, E
A, B, C, D, E, F, G, H
346Escherichia coli K-12Mutation(s): 0 
UniProt
Find proteins for Q46851 (Escherichia coli (strain K12))
Explore Q46851 
Go to UniProtKB:  Q46851
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ46851
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.38 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.241 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.808α = 90
b = 144.317β = 96.51
c = 113.896γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-05-16
    Type: Initial release
  • Version 1.1: 2014-03-12
    Changes: Database references, Other, Source and taxonomy
  • Version 1.2: 2018-04-04
    Changes: Data collection
  • Version 1.3: 2023-12-20
    Changes: Data collection, Database references, Other, Refinement description