8QTO

CRYSTAL STRUCTURE OF HOLO-L28H-FNR OF A. FISCHERI

• PDB DOI: https://doi.org/10.2210/pdb8QTO/pdb

• Classification: TRANSCRIPTION
• Organism(s): Aliivibrio fischeri
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2023-10-13 Released: 2023-11-29 
• Deposition Author(s): Volbeda, A., Fontecilla-Camps, J.C.
• Funding Organization(s): Agence Nationale de la Recherche (ANR)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.227 
• R-Value Work: 0.198 
• R-Value Observed: 0.199 

Literature

Probing the Reactivity of [4Fe-4S] Fumarate and Nitrate Reduction (FNR) Regulator with O2 and NO: Increased O2 Resistance and Relative Specificity for NO of the [4Fe-4S] L28H FNR Cluster

Crack, J.C., Amara, P., de Rosny, E., Darnault, C., Stapleton, M.R., Green, J., Volbeda, A., Fontecilla-Camps, J.C., Le Brun, N.E.

(2023) Inorganics (Basel) 11

• DOI: https://doi.org/10.3390/inorganics11120450

Biological Assembly 1  

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

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

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 30.07 kDa 
• Atom Count: 1,962 
• Modelled Residue Count: 234 
• Deposited Residue Count: 259 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FNR type regulator	A	259	Aliivibrio fischeri	Mutation(s): 1  Gene Names: fnr
UniProt
Find proteins for Q70ET4 (Aliivibrio fischeri) Explore Q70ET4  Go to UniProtKB:  Q70ET4

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SF4	B [auth A]	IRON/SULFUR CLUSTER Fe4 S4 LJBDFODJNLIPKO-UHFFFAOYSA-N
MPD	C [auth A], D [auth A], E [auth A], F [auth A]	(4S)-2-METHYL-2,4-PENTANEDIOL C6 H14 O2 SVTBMSDMJJWYQN-YFKPBYRVSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.227 
• R-Value Work: 0.198 
• R-Value Observed: 0.199 
• Space Group: I 4 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 75.2	α = 90
b = 75.2	β = 90
c = 217.47	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-11-29 
Deposition Author(s): Volbeda, A., Fontecilla-Camps, J.C.

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Funding Organization	Location	Grant Number
Agence Nationale de la Recherche (ANR)	France	ANR-18-CE11-0010

Revision History  

• Version 1.0: 2023-11-29
  Type: Initial release