1E1N

Structure of adrenodoxin reductase at 2.4 Angstrom in crystal form A'


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal Structures of Adrenodoxin Reductase in Complex with Nadp+ and Nadph Suggesting a Mechanism for the Electron Transfer of an Enzyme Family

Ziegler, G.A.Schulz, G.E.

(2000) Biochemistry 39: 10986

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Adrenodoxin reductase is a flavoenzyme that shuffles electrons for the biosynthesis of steroids. Its chain topology belongs to the glutathione reductase family of disulfide oxidoreductases, all of which bind FAD at equivalent positions. The three rep ...

    Adrenodoxin reductase is a flavoenzyme that shuffles electrons for the biosynthesis of steroids. Its chain topology belongs to the glutathione reductase family of disulfide oxidoreductases, all of which bind FAD at equivalent positions. The three reported structures of adrenodoxin reductase were ligated with reduced and oxidized NADP and have now confirmed this equivalence also for the NADP-binding site. Remarkably, the conformations and relative positions of the prosthetic group FAD and the cofactor NADP have been conserved during protein evolution despite very substantial changes in the polypeptide. The ligated enzymes showed small changes in the domain positions. When compared with the structure of the NADP-free enzyme, these positions correspond to several states of the domain motion during NADP binding. On the basis of the observed structures, we suggest an enzymatic mechanism for the subdivision of the received two-electron package into the two single electrons transferred to the carrier protein adrenodoxin. The data banks contain 10 sequences that are closely related to bovine adrenodoxin reductase. Most of them code for gene products with unknown functions. Within this family, the crucial residues of adrenodoxin reductase are strictly conserved. Moreover, the putative docking site of the carrier is rather well conserved. Five of the family members were assigned names related to ferredoxin:NADP(+) reductase, presumably because adrenodoxin reductase was considered a member of this functionally similar family. Since this is not the case, the data bank entries should be corrected.


    Related Citations: 
    • Chaperone-Assisted Expression of Authentic Bovine Adrenodoxin Reductase in Escherichia Coli
      Vonrhein, C.,Schmidt, U.,Ziegler, G.A.,Schweiger, S.,Hanukoglu, I.,Schulz, G.E.
      (1999) FEBS Lett. 443: 167
    • The Structure of Adrenodoxin Reductase of Mitochondrial P450 Systems: Electron Transfer for Steroid Biosynthesis
      Ziegler, G.A.,Vonrhein, C.,Hanukoglu, I.,Schulz, G.E.
      (1999) J.Mol.Biol. 289: 981


    Organizational Affiliation

    Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität, Albertstrasse 21, D-79104 Freiburg im Breisgau, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ADRENODOXIN REDUCTASE
A
460Bos taurusGene Names: FDXR (ADXR)
EC: 1.18.1.6
Find proteins for P08165 (Bos taurus)
Go to Gene View: FDXR
Go to UniProtKB:  P08165
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download SDF File 
Download CCD File 
A
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.201 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 57.800α = 90.00
b = 62.000β = 107.10
c = 83.000γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-09-24
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-07-05
    Type: Data collection