4QFF

Structure of a 16 nm protein cage designed by fusing symmetric oligomeric domains, quadruple mutant, P212121 form

• PDB DOI: https://doi.org/10.2210/pdb4QFF/pdb

• Classification: OXIDOREDUCTASE, VIRAL PROTEIN
• Organism(s): Kitasatospora aureofaciens, Influenza A virus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2014-05-20 Released: 2015-05-20 
• Deposition Author(s): Lai, Y.-T., Yeates, T.O.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 7.81 Å
• R-Value Free: 0.339 
• R-Value Work: 0.288 
• R-Value Observed: 0.290 

Literature

Structural transition of a protein nanocage as a function of pH and salt concentration

Lai, Y.-T., Yeates, T.O.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 12-mer - A12 

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

Macromolecule Content

• Total Structure Weight: 602.27 kDa 
• Atom Count: 40,512 
• Modelled Residue Count: 5,292 
• Deposited Residue Count: 5,472 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Non-haem bromoperoxidase BPO-A2, Matrix protein 1 chimera	A, B, C, D, E, F, G, H, I, J, K, L	456	Kitasatospora aureofaciens, Influenza A virus This entity is chimeric	Mutation(s): 3  Gene Names: bpoA2, M EC: 1.11.1
UniProt
Find proteins for P29715 (Kitasatospora aureofaciens) Explore P29715  Go to UniProtKB:  P29715
Find proteins for P03485 (Influenza A virus (strain A/Puerto Rico/8/1934 H1N1)) Explore P03485  Go to UniProtKB:  P03485
UniProt Groups	P29715P03485

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 7.81 Å
• R-Value Free: 0.339 
• R-Value Work: 0.288 
• R-Value Observed: 0.290 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 155.5	α = 90
b = 156.52	β = 90
c = 325.03	γ = 90

Software Package:

Software Name	Purpose
XSCALE	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-05-20 
Deposition Author(s): Lai, Y.-T., Yeates, T.O.

Revision History  

• Version 1.0: 2015-05-20
  Type: Initial release
  
• Version 1.1: 2017-07-26
  Changes: Refinement description, Source and taxonomy
• Version 1.2: 2024-02-28
  Changes: Data collection, Database references, Refinement description