Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 37.82 kDa 
• Atom Count: 2,821 
• Modelled Residue Count: 329 
• Deposited Residue Count: 338 
• Unique protein chains: 1

 1I0R

CRYSTAL STRUCTURE OF FERRIC REDUCTASE FROM ARCHAEOGLOBUS FULGIDUS

• PDB DOI: 10.2210/pdb1I0R/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Archaeoglobus fulgidus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2001-01-29 Released: 2001-05-02 
• Deposition Author(s): Chiu, H.-J., Johnson, E., Schroder, I., Rees, D.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.220 
• R-Value Work: 0.205 
• R-Value Observed: 0.206 

Literature

Crystal structures of a novel ferric reductase from the hyperthermophilic archaeon Archaeoglobus fulgidus and its complex with NADP+.

Chiu, H.J., Johnson, E., Schroder, I., Rees, D.C.

(2001) Structure 9: 311-319

• PubMed: 11525168 
• DOI: 10.1016/s0969-2126(01)00589-5
• Primary Citation of Related Structures:  
  1I0R, 1I0S


• PubMed Abstract: 
  

Studies performed within the last decade have indicated that microbial reduction of Fe(III) to Fe(II) is a biologically significant process. The ferric reductase (FeR) from Archaeoglobus fulgidus is the first reported archaeal ferric reductase and it catalyzes the flavin-mediated reduction of ferric iron complexes using NAD(P)H as the electron donor. Based on its catalytic activity, the A. fulgidus FeR resembles the bacterial and eukaryotic assimilatory type of ferric reductases. However, the high cellular abundance of the A. fulgidus FeR (approximately 0.75% of the total soluble protein) suggests a catabolic role for this enzyme as the terminal electron acceptor in a ferric iron-based respiratory pathway [1].

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Organizational Affiliation: 

Division of Chemistry and Chemical Engineering, California Institute of Technology, 91125, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CONSERVED HYPOTHETICAL PROTEIN	A, B	169	Archaeoglobus fulgidus	Mutation(s): 0  EC: 1.16.1.10
UniProt
Find proteins for O29428 (Archaeoglobus fulgidus (strain ATCC 49558 / DSM 4304 / JCM 9628 / NBRC 100126 / VC-16)) Explore O29428  Go to UniProtKB:  O29428

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FMN	C [auth A]	FLAVIN MONONUCLEOTIDE C17 H21 N4 O9 P FVTCRASFADXXNN-SCRDCRAPSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.220 
• R-Value Work: 0.205 
• R-Value Observed: 0.206 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 56.378	α = 90
b = 56.378	β = 90
c = 214.57	γ = 90

Software Package:

Software Name	Purpose
SnB	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2001-05-02 
Deposition Author(s): Chiu, H.-J., Johnson, E., Schroder, I., Rees, D.C.

Revision History  

• Version 1.0: 2001-05-02
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-02-08
  Changes: Structure summary
• Version 1.4: 2017-10-04
  Changes: Refinement description