3WXB

Crystal structure of NADPH bound carbonyl reductase from chicken fatty liver


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A novel NAD(P)H-dependent carbonyl reductase specifically expressed in the thyroidectomized chicken fatty liver: catalytic properties and crystal structure.

Fukuda, Y.Sone, T.Sakuraba, H.Araki, T.Ohshima, T.Shibata, T.Yoneda, K.

(2015) Febs J. 282: 3918-3928

  • DOI: 10.1111/febs.13385

  • PubMed Abstract: 
  • A gene encoding a functionally unknown protein that is specifically expressed in the thyroidectomized chicken fatty liver and has a predicted amino acid sequence similar to that of NAD(P)H-dependent carbonyl reductase was overexpressed in Escherichia ...

    A gene encoding a functionally unknown protein that is specifically expressed in the thyroidectomized chicken fatty liver and has a predicted amino acid sequence similar to that of NAD(P)H-dependent carbonyl reductase was overexpressed in Escherichia coli; its product was purified and characterized. The expressed enzyme was an NAD(P)H-dependent broad substrate specificity carbonyl reductase and was inhibited by arachidonic acid at 1.5 μm. Enzymological characterization indicated that the enzyme could be classified as a cytosolic-type carbonyl reductase. The enzyme's 3D structure was determined using the molecular replacement method at 1.98 Å resolution in the presence of NADPH and ethylene glycol. The asymmetric unit consisted of two subunits, and a noncrystallographic twofold axis generated the functional dimer. The structures of the subunits, A and B, differed from each other. In subunit A, the active site contained an ethylene glycol molecule absent in subunit B. Consequently, Tyr172 in subunit A rotated by 103.7° in comparison with subunit B, which leads to active site closure in subunit A. In Y172A mutant, the Km value for 9,10-phenanthrenequinone (model substrate) was 12.5 times higher than that for the wild-type enzyme, indicating that Tyr172 plays a key role in substrate binding in this carbonyl reductase. Because the Tyr172-containing active site lid structure (Ile164-Gln174) is not conserved in all known carbonyl reductases, our results provide new insights into substrate binding of carbonyl reductase. The catalytic properties and crystal structure revealed that thyroidectomized chicken fatty liver carbonyl reductase is a novel enzyme.


    Organizational Affiliation

    Department of Bioscience, Tokai University, Kumamoto, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Uncharacterized protein
A, B
279Gallus gallusMutation(s): 0 
Gene Names: LOC415661 (NADB-LER3)
Find proteins for F1N9C1 (Gallus gallus)
Go to UniProtKB:  F1N9C1
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EDO
Query on EDO

Download SDF File 
Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
NDP
Query on NDP

Download SDF File 
Download CCD File 
A, B
NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H30 N7 O17 P3
ACFIXJIJDZMPPO-NNYOXOHSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.215 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 74.568α = 90.00
b = 74.568β = 90.00
c = 190.925γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data collection
CNSrefinement
HKL-2000data scaling
HKL-2000data reduction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-07-29
    Type: Initial release
  • Version 1.1: 2015-10-28
    Type: Database references