3BHI

Crystal structure of human Carbonyl Reductase 1 in complex with NADP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.27 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.206 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Human carbonyl reductase 1 is an s-nitrosoglutathione reductase

Bateman, R.L.Rauh, D.Tavshanjian, B.Shokat, K.M.

(2008) J Biol Chem 283: 35756-35762

  • DOI: https://doi.org/10.1074/jbc.M807125200
  • Primary Citation of Related Structures:  
    3BHI, 3BHJ, 3BHM

  • PubMed Abstract: 

    Human carbonyl reductase 1 (hCBR1) is an NADPH-dependent short chain dehydrogenase/reductase with broad substrate specificity and is thought to be responsible for the in vivo reduction of quinones, prostaglandins, and other carbonyl-containing compounds including xenobiotics. In addition, hCBR1 possesses a glutathione binding site that allows for increased affinity toward GSH-conjugated molecules. It has been suggested that the GSH-binding site is near the active site; however, no structures with GSH or GSH conjugates have been reported. We have solved the x-ray crystal structures of hCBR1 and a substrate mimic in complex with GSH and the catalytically inert GSH conjugate hydroxymethylglutathione (HMGSH). The structures reveal the GSH-binding site and provide insight into the affinity determinants for GSH-conjugated substrates. We further demonstrate that the structural isostere of HMGSH, S-nitrosoglutathione, is an ideal hCBR1 substrate (Km = 30 microm, kcat = 450 min(-1)) with kinetic constants comparable with the best known hCBR1 substrates. Furthermore, we demonstrate that hCBR1 dependent GSNO reduction occurs in A549 lung adenocarcinoma cell lysates and suggest that hCBR1 may be involved in regulation of tissue levels of GSNO.


  • Organizational Affiliation

    Department of Cellular and Molecular Pharmacology, Howard Hughes Medical Institute, San Francisco, CA 94143-2280, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Carbonyl reductase [NADPH] 1276Homo sapiensMutation(s): 0 
Gene Names: CBR1CBRCRN
EC: 1.1.1.184 (PDB Primary Data), 1.1.1.197 (UniProt), 1.1.1.196 (UniProt), 1.1.1.71 (UniProt), 1.1.1.189 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P16152 (Homo sapiens)
Explore P16152 
Go to UniProtKB:  P16152
PHAROS:  P16152
GTEx:  ENSG00000159228 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP16152
Sequence Annotations
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.27 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.206 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.662α = 90
b = 55.662β = 90
c = 169.88γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
CNSphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-10-21
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description
  • Version 1.3: 2023-11-01
    Changes: Data collection, Database references, Derived calculations, Refinement description