Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 128031.96 
• Atom Count: 8918 
• Residue Count: 1132 
• Unique protein chains: 1

1QO8

The structure of the open conformation of a flavocytochrome c3 fumarate reductase

• DOI: 10.2210/pdb1QO8/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Shewanella frigidimarina (strain NCIMB 400)


• Deposited: 1999-11-04 Released: 2000-11-02 
• Deposition Author(s): Bamford, V., Dobbin, P.S., Richardson, D.J., Hemmings, A.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 0.281 
• R-Value Work: 0.225 

Literature

Open Conformation of a Flavocytochrome C3 Fumarate Reductase.

Bamford, V., Dobbin, P.S., Richardson, D.J., Hemmings, A.M.

(1999) Nat.Struct.Mol.Biol. 6: 1104

• PubMed: 10581549 
• DOI: 10.1038/70039


• PubMed Abstract: 
  

Fumarate reductases and succinate dehydrogenases play central roles in the metabolism of eukaryotic and prokaryotic cells. A recent medium resolution structure of the Escherichia coli fumarate reductase (Frd) has revealed the overall organization of the membrane-bound complex. Here we present the first high resolution X-ray crystal structure of a water-soluble bacterial fumarate reductase in an open conformation. This structure reveals a mobile domain that modulates substrate access to the active site and provides new insights into the mechanism of this widespread and important family of FAD-containing respiratory proteins.

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Organizational Affiliation: 

School of Biological Sciences, Centre for Metalloprotein Spectroscopy and Biology, University of East Anglia, Norwich NR4 7TJ, UK.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
FLAVOCYTOCHROME C3 FUMARATE REDUCTASE	A, D	566	Shewanella frigidimarina (strain NCIMB 400)	Mutation(s): 0  Gene Names: ifcA EC: 1.3.5.4
Find proteins for Q9Z4P0 (Shewanella frigidimarina (strain NCIMB 400)) Go to UniProtKB:  Q9Z4P0

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
FAD	A, D	FLAVIN-ADENINE DINUCLEOTIDE C27 H33 N9 O15 P2 VWWQXMAJTJZDQX-UYBVJOGSSA-N
HEM	A, D	PROTOPORPHYRIN IX CONTAINING FE HEME C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 0.281 
• R-Value Work: 0.225 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 71.770	α = 90.00
b = 109.690	β = 90.00
c = 227.320	γ = 90.00

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
AMoRE	phasing
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1999-11-04 
• Released Date: 2000-11-02 
• Deposition Author(s): Bamford, V., Dobbin, P.S., Richardson, D.J., Hemmings, A.M.

Revision History 

• Version 1.0: 2000-11-02
  Type: Initial release
• Version 1.1: 2011-05-08
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance