4HBK

Structure of the Aldose Reductase from Schistosoma japonicum

• PDB DOI: https://doi.org/10.2210/pdb4HBK/pdb

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


• Deposited: 2012-09-28 Released: 2013-06-26 
• Deposition Author(s): Liu, J., Cheng, J., Zhang, X., Yang, Z., Hu, W., Xu, Y.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.217 
• R-Value Work: 0.177 
• R-Value Observed: 0.179 

Literature

Aldose reductase from Schistosoma japonicum: crystallization and structure-based inhibitor screening for discovering antischistosomal lead compounds.

Liu, J., Dyer, D., Cheng, J., Wang, J., Wang, S., Yang, Z., Wang, X., Hu, W.

(2013) Parasit Vectors 6: 162-162

• PubMed: 23734964 
• DOI: https://doi.org/10.1186/1756-3305-6-162
• Primary Citation of Related Structures:  
  4HBK


• PubMed Abstract: 
  

  Schistosomiasis is a neglected tropical disease with high morbidity and mortality in the world. Currently, the treatment of this disease depends almost exclusively on praziquantel (PZQ); however, the emergence of drug resistance to PZQ in schistosomes makes the development of novel drugs an urgent task. Aldose reductase (AR), an important component that may be involved in the schistosome antioxidant defense system, is predicted as a potential drug target.

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Organizational Affiliation: 

Key Laboratory of Parasite and Vector Biology of MOH, Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, 207 Rui-Jin Road II, Shanghai, China.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 39.24 kDa 
• Atom Count: 2,677 
• Modelled Residue Count: 301 
• Deposited Residue Count: 344 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Aldo-keto reductase family 1, member B4 (Aldose reductase)	A	344	Schistosoma japonicum	Mutation(s): 0  Gene Names: Akr1b4 EC: 1.1.1.21
UniProt
Find proteins for Q5DD64 (Schistosoma japonicum) Explore Q5DD64  Go to UniProtKB:  Q5DD64

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.217 
• R-Value Work: 0.177 
• R-Value Observed: 0.179 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 67.486	α = 90
b = 90.99	β = 90
c = 54.667	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-06-26 
Deposition Author(s): Liu, J., Cheng, J., Zhang, X., Yang, Z., Hu, W., Xu, Y.

Revision History  

• Version 1.0: 2013-06-26
  Type: Initial release
  
• Version 1.1: 2013-07-03
  Changes: Database references
• Version 1.2: 2023-09-20
  Changes: Data collection, Database references, Refinement description