4GAC

High resolution structure of mouse aldehyde reductase (AKR1a4) in its apo-form

• PDB DOI: https://doi.org/10.2210/pdb4GAC/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Mus musculus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2012-07-25 Released: 2012-11-07 
• Deposition Author(s): Faucher, F., Jia, Z.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.64 Å
• R-Value Free: 0.178 
• R-Value Work: 0.148 
• R-Value Observed: 0.149 

Starting Model: experimental

Literature

High-resolution structure of AKR1a4 in the apo form and its interaction with ligands.

Faucher, F., Jia, Z.

(2012) Acta Crystallogr Sect F Struct Biol Cryst Commun 68: 1271-1274

• PubMed: 23143230 
• DOI: https://doi.org/10.1107/S1744309112037128
• Primary Citation of Related Structures:  
  4GAC


• PubMed Abstract: 
  

  Aldo-keto reductase 1a4 (AKR1a4; EC 1.1.1.2) is the mouse orthologue of human aldehyde reductase (AKR1a1), the founding member of the AKR family. As an NADPH-dependent enzyme, AKR1a4 catalyses the conversion of D-glucuronate to L-gulonate. AKR1a4 is involved in ascorbate biosynthesis in mice, but has also recently been found to interact with SMAR1, providing a novel mechanism of ROS regulation by ATM. Here, the crystal structure of AKR1a4 in its apo form at 1.64 Å resolution as well as the characterization of the binding of AKR1a4 to NADPH and P44, a peptide derived from SMAR1, is presented.

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Organizational Affiliation: 

Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 73.51 kDa 
• Atom Count: 6,168 
• Modelled Residue Count: 629 
• Deposited Residue Count: 648 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Alcohol dehydrogenase [NADP(+)]	A, B	324	Mus musculus	Mutation(s): 0  Gene Names: Akr1a1, Akr1a4 EC: 1.1.1.2
UniProt
Find proteins for Q9JII6 (Mus musculus) Explore Q9JII6  Go to UniProtKB:  Q9JII6

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FLC	D [auth A], F [auth B]	CITRATE ANION C6 H5 O7 KRKNYBCHXYNGOX-UHFFFAOYSA-K
EDO	C [auth A], E [auth B]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.64 Å
• R-Value Free: 0.178 
• R-Value Work: 0.148 
• R-Value Observed: 0.149 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 56.94	α = 90
b = 92.62	β = 106.16
c = 70.1	γ = 90

Software Package:

Software Name	Purpose
XSCALE	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
Blu-Ice	data collection
XDS	data reduction
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-11-07 
Deposition Author(s): Faucher, F., Jia, Z.

Revision History  

• Version 1.0: 2012-11-07
  Type: Initial release
  
• Version 1.1: 2013-01-23
  Changes: Database references
• Version 1.2: 2017-11-15
  Changes: Advisory, Refinement description
• Version 1.3: 2023-09-13
  Changes: Advisory, Data collection, Database references, Derived calculations, Refinement description