Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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: 128.03 kDa 
• Atom Count: 9425 
• Modelled Residue Count: 1128 
• Deposited 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
• Mutation(s): No 


• 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 Biol 6: 1104

• PubMed: 10581549 
• DOI: 10.1038/70039
• Primary Citation of Related Structures:  
  1QO8


• 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

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FLAVOCYTOCHROME C3 FUMARATE REDUCTASE	A, B [auth D]	566	Shewanella frigidimarina	Mutation(s): 0  EC: 1.3.99.1 (PDB Primary Data), 1.3.5.4 (UniProt)
Find proteins for Q9Z4P0 (Shewanella frigidimarina (strain NCIMB 400)) Explore Q9Z4P0  Go to UniProtKB:  Q9Z4P0

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FAD	G [auth A], L [auth D]	FLAVIN-ADENINE DINUCLEOTIDE C27 H33 N9 O15 P2 VWWQXMAJTJZDQX-UYBVJOGSSA-N
HEM	C [auth A], D [auth A], E [auth A], F [auth A], H [auth D], I [auth D], J [auth D], K [auth D]	PROTOPORPHYRIN IX CONTAINING FE 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 = 71.77	α = 90
b = 109.69	β = 90
c = 227.32	γ = 90

Software Package:

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

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
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2019-07-24
  Changes: Data collection