2E4P

Crystal structure of BphA3 (oxidized form)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.208 

wwPDB Validation 3D Report Full Report


This is version 1.1 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:  

  • 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.


    Related Citations: 
    • Crystallization and preliminary X-ray analysis of the Rieske-type [2Fe-2S] ferredoxin component of biphenyl dioxygenase from Pseudomonas sp. strain KKS102
      Senda, M.,Kimura, S.,Kishigami, S.,Senda, T.
      (2006) Acta Crystallogr.,Sect.F 62: 590


    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Biphenyl dioxygenase ferredoxin subunit
A, B
109Pseudomonas sp. (strain KKS102)Mutation(s): 0 
Gene Names: bphA3
Find proteins for Q52440 (Pseudomonas sp. (strain KKS102))
Go to UniProtKB:  Q52440
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TRE
Query on TRE

Download SDF File 
Download CCD File 
A
TREHALOSE
ALPHA-D-GLUCOPYRANOSYL-ALPHA-D-GLUCOPYRANOSIDE
C12 H22 O11
HDTRYLNUVZCQOY-LIZSDCNHSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
FES
Query on FES

Download SDF File 
Download CCD File 
A, B
FE2/S2 (INORGANIC) CLUSTER
Fe2 S2
NIXDOXVAJZFRNF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.208 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 26.294α = 90.00
b = 144.113β = 90.00
c = 61.176γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
ADSCdata collection
XDSdata reduction
MOLREPphasing
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-10-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance