3FNI

Crystal structure of a diflavin flavoprotein A3 (all3895) from Nostoc sp., Northeast Structural Genomics Consortium Target NsR431A

• PDB DOI: https://doi.org/10.2210/pdb3FNI/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Nostoc sp. PCC 7120 = FACHB-418
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2008-12-24 Released: 2009-01-13 
• Deposition Author(s): Forouhar, F., Lew, S., Seetharaman, J., Sahdev, S., Xiao, R., Foote, E.L., Ciccosanti, C., Wang, D., Everett, J.K., Nair, R., Acton, T.B., Rost, B., Montelione, G.T., Hunt, J.F., Tong, L., Northeast Structural Genomics Consortium (NESG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.252 
• R-Value Work: 0.210 
• R-Value Observed: 0.210 

Literature

Crystal structure of a diflavin flavoprotein A3 (all3895) from Nostoc sp., Northeast Structural Genomics Consortium Target NsR431A

Forouhar, F., Lew, S., Seetharaman, J., Sahdev, S., Xiao, R., Foote, E.L., Ciccosanti, C., Wang, D., Everett, J.K., Nair, R., Acton, T.B., Rost, B., Montelione, G.T., Hunt, J.F., Tong, L.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content

• Total Structure Weight: 17.05 kDa 
• Atom Count: 1,289 
• Modelled Residue Count: 154 
• Deposited Residue Count: 159 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Putative diflavin flavoprotein A 3	A	159	Nostoc sp. PCC 7120 = FACHB-418	Mutation(s): 0  Gene Names: all3895, dfa3 EC: 1
UniProt
Find proteins for Q8YQD8 (Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576)) Explore Q8YQD8  Go to UniProtKB:  Q8YQD8

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.252 
• R-Value Work: 0.210 
• R-Value Observed: 0.210 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 28.096	α = 90
b = 66.301	β = 90
c = 75.15	γ = 90

Software Package:

Software Name	Purpose
ADSC	data collection
SHELX	model building
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
SHELX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-01-13 
Deposition Author(s): Forouhar, F., Lew, S., Seetharaman, J., Sahdev, S., Xiao, R., Foote, E.L., Ciccosanti, C., Wang, D., Everett, J.K., Nair, R., Acton, T.B., Rost, B., Montelione, G.T., Hunt, J.F., Tong, L., Northeast Structural Genomics Consortium (NESG)

Revision History  

• Version 1.0: 2009-01-13
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.2: 2014-04-09
  Changes: Data collection
• Version 1.3: 2024-10-09
  Changes: Data collection, Database references, Derived calculations, Structure summary