Crystal structure of a mammalian reductase

Experimental Data Snapshot

  • Resolution: 1.50 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.162 

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Molecular basis for peroxisomal localization of tetrameric carbonyl reductase.

Tanaka, N.Aoki, K.Ishikura, S.Nagano, M.Imamura, Y.Hara, A.Nakamura, K.T.

(2008) Structure 16: 388-397

  • DOI: https://doi.org/10.1016/j.str.2007.12.022
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Pig heart peroxisomal carbonyl reductase (PerCR) belongs to the short-chain dehydrogenase/reductase family, and its sequence comprises a C-terminal SRL tripeptide, which is a variant of the type 1 peroxisomal targeting signal (PTS1) Ser-Lys-Leu. PerCR is imported into peroxisomes of HeLa cells when the cells are transfected with vectors expressing the enzyme. However, PerCR does not show specific targeting when introduced into the cells with a protein transfection reagent. To understand the structural basis for peroxisomal localization of PerCR, we determined the crystal structure of PerCR. Our data revealed that the C-terminal PTS1 of each subunit of PerCR was involved in intersubunit interactions and was buried in the interior of the tetrameric molecule. These findings indicate that the PTS1 receptor Pex5p in the cytosol recognizes the monomeric form of PerCR whose C-terminal PTS1 is exposed, and that this PerCR is targeted into the peroxisome, thereby forming a tetramer.

  • Organizational Affiliation

    School of Pharmaceutical Sciences, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan. ntanaka@pharm.showa-u.ac.jp

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Dehydrogenase/reductase SDR family member 4
A, B, C, D
260Sus scrofaMutation(s): 0 
Find proteins for Q8WNV7 (Sus scrofa)
Explore Q8WNV7 
Go to UniProtKB:  Q8WNV7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8WNV7
Sequence Annotations
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Resolution: 1.50 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.162 
  • Space Group: P 42
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 109.612α = 90
b = 109.612β = 90
c = 94.308γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-04-29
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2023-11-01
    Changes: Data collection, Database references, Refinement description