2GQW

Crystal structure of Ferredoxin reductase, BphA4 (oxidized form)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Molecular Mechanism of the Redox-dependent Interaction between NADH-dependent Ferredoxin Reductase and Rieske-type [2Fe-2S] Ferredoxin

Senda, M.Kishigami, S.Kimura, S.Fukuda, M.Ishida, T.Senda, T.

(2007) J Mol Biol 373: 382-400

  • DOI: 10.1016/j.jmb.2007.08.002
  • Primary Citation of Related Structures:  
    2YVG, 2YVJ, 2YVF, 2E4Q, 2E4P, 2GR0, 2GQW

  • PubMed Abstract: 
  • The electron transfer system of the biphenyl dioxygenase BphA, which is derived from Acidovorax sp. (formally Pseudomonas sp.) strain KKS102, is composed of an FAD-containing NADH-ferredoxin reductase (BphA4) and a Rieske-type [2Fe-2S] ferredoxin (Bp ...

    The electron transfer system of the biphenyl dioxygenase BphA, which is derived from Acidovorax sp. (formally Pseudomonas sp.) strain KKS102, is composed of an FAD-containing NADH-ferredoxin reductase (BphA4) and a Rieske-type [2Fe-2S] ferredoxin (BphA3). Biochemical studies have suggested that the whole electron transfer process from NADH to BphA3 comprises three consecutive elementary electron-transfer reactions, in which BphA3 and BphA4 interact transiently in a redox-dependent manner. Initially, BphA4 receives two electrons from NADH. The reduced BphA4 then delivers one electron each to the [2Fe-2S] cluster of the two BphA3 molecules through redox-dependent transient interactions. The reduced BphA3 transports the electron to BphA1A2, a terminal oxygenase, to support the activation of dioxygen for biphenyl dihydroxylation. In order to elucidate the molecular mechanisms of the sequential reaction and the redox-dependent interaction between BphA3 and BphA4, we determined the crystal structures of the productive BphA3-BphA4 complex, and of free BphA3 and BphA4 in all the redox states occurring in the catalytic cycle. The crystal structures of these reaction intermediates demonstrated that each elementary electron transfer induces a series of redox-dependent conformational changes in BphA3 and BphA4, which regulate the interaction between them. In addition, the conformational changes induced by the preceding electron transfer seem to induce the next electron transfer. The interplay of electron transfer and induced conformational changes seems to be critical to the sequential electron-transfer reaction from NADH to BphA3.


    Organizational Affiliation

    Japan Biological Information Research Center, Japan Biological Informatics Consortium, 2-42 Aomi, Koto-ku, Tokyo 135-0064, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ferredoxin reductaseA408Pseudomonas sp. KKS102Mutation(s): 0 
Gene Names: bphA4
EC: 1.18.1.2
Find proteins for Q52437 (Pseudomonas sp. (strain KKS102))
Explore Q52437 
Go to UniProtKB:  Q52437
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download CCD File 
A
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
FMT
Query on FMT

Download CCD File 
A
FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.409α = 90
b = 98.409β = 90
c = 170.582γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
ADSCdata collection
XDSdata scaling
XTALVIEWrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2006-04-22 
  • Released Date: 2007-05-22 
  • Deposition Author(s): Senda, T., Senda, M.

Revision History 

  • Version 1.0: 2007-05-22
    Type: Initial release
  • Version 1.1: 2007-10-11
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance