3CV6

The crystal structure of mouse 17-alpha hydroxysteroid dehydrogenase GG225.226PP mutant in complex with inhibitor and cofactor NADP+.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 
    0.256 (Depositor), 0.250 (DCC) 
  • R-Value Work: 
    0.197 (Depositor), 0.200 (DCC) 
  • R-Value Observed: 
    0.200 (Depositor) 

Starting Model: experimental
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Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted NAPClick on this verticalbar to view detailsBest fitted HXSClick on this verticalbar to view details

This is version 1.5 of the entry. See complete history


Literature

Structure of the G225P/G226P mutant of mouse 3(17)alpha-hydroxysteroid dehydrogenase (AKR1C21) ternary complex: implications for the binding of inhibitor and substrate.

Dhagat, U.Endo, S.Mamiya, H.Hara, A.El-Kabbani, O.

(2009) Acta Crystallogr D Biol Crystallogr 65: 257-265

  • DOI: https://doi.org/10.1107/S0907444908044028
  • Primary Citation of Related Structures:  
    3CV6

  • PubMed Abstract: 

    3(17)alpha-Hydroxysteroid dehydrogenase (AKR1C21) is a unique member of the aldo-keto reductase (AKR) superfamily owing to its ability to reduce 17-ketosteroids to 17alpha-hydroxysteroids, as opposed to other members of the AKR family, which can only produce 17beta-hydroxysteroids. In this paper, the crystal structure of a double mutant (G225P/G226P) of AKR1C21 in complex with the coenzyme NADP(+) and the inhibitor hexoestrol refined at 2.1 A resolution is presented. Kinetic analysis and molecular-modelling studies of 17alpha- and 17beta-hydroxysteroid substrates in the active site of AKR1C21 suggested that Gly225 and Gly226 play an important role in determining the substrate stereospecificity of the enzyme. Additionally, the G225P/G226P mutation of the enzyme reduced the affinity (K(m)) for both 3alpha- and 17alpha-hydroxysteroid substrates by up to 160-fold, indicating that these residues are critical for the binding of substrates.


  • Organizational Affiliation

    Medicinal Chemistry and Drug Action, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Aldo-keto reductase family 1 member C21
A, B
323Mus musculusMutation(s): 2 
Gene Names: Akr1c21
EC: 1.1.1.209 (PDB Primary Data), 1.1.1 (UniProt)
UniProt
Find proteins for Q91WR5 (Mus musculus)
Explore Q91WR5 
Go to UniProtKB:  Q91WR5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ91WR5
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAP
Query on NAP

Download Ideal Coordinates CCD File 
C [auth A],
G [auth B]
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H28 N7 O17 P3
XJLXINKUBYWONI-NNYOXOHSSA-N
HXS
Query on HXS

Download Ideal Coordinates CCD File 
D [auth A],
H [auth B]
4-[(1R,2S)-1-ethyl-2-(4-hydroxyphenyl)butyl]phenol
C18 H22 O2
PBBGSZCBWVPOOL-HDICACEKSA-N
BME
Query on BME

Download Ideal Coordinates CCD File 
E [auth A],
F [auth A],
I [auth B],
J [auth B],
K [auth B]
BETA-MERCAPTOETHANOL
C2 H6 O S
DGVVWUTYPXICAM-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free:  0.256 (Depositor), 0.250 (DCC) 
  • R-Value Work:  0.197 (Depositor), 0.200 (DCC) 
  • R-Value Observed: 0.200 (Depositor) 
Space Group: P 32
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.108α = 90
b = 102.108β = 90
c = 72.274γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data collection
HKL-2000data reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted NAPClick on this verticalbar to view detailsBest fitted HXSClick on this verticalbar to view details

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-03-03
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2012-04-18
    Changes: Database references
  • Version 1.3: 2019-11-13
    Changes: Advisory, Data collection
  • Version 1.4: 2021-11-10
    Changes: Advisory, Database references, Derived calculations
  • Version 1.5: 2023-11-01
    Changes: Data collection, Refinement description