1QBE

BACTERIOPHAGE Q BETA CAPSID

• PDB DOI: https://doi.org/10.2210/pdb1QBE/pdb

• Classification: VIRUS
• Organism(s): Qubevirus durum
• Mutation(s): No 


• Deposited: 1996-01-10 Released: 1996-07-11 
• Deposition Author(s): Liljas, L., Golmohammadi, R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.50 Å
• R-Value Work: 0.304 
• R-Value Observed: 0.304 

Literature

The crystal structure of bacteriophage Q beta at 3.5 A resolution.

Golmohammadi, R., Fridborg, K., Bundule, M., Valegard, K., Liljas, L.

(1996) Structure 4: 543-554

• PubMed: 8736553 
• DOI: https://doi.org/10.1016/s0969-2126(96)00060-3
• Primary Citation of Related Structures:  
  1QBE


• PubMed Abstract: 
  

  The capsid protein subunits of small RNA bacteriophages form a T = 3 particle upon assembly and RNA encapsidation. Dimers of the capsid protein repress translation of the replicase gene product by binding to the ribosome binding site and this interaction is believed to initiate RNA encapsidation. We have determined the crystal structure of phage Q beta with the aim of clarifying which factors are the most important for particle assembly and RNA interaction in the small phages.

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Organizational Affiliation: 

Department of Molecular Biology, Uppsala University, BMC, Sweden.

Biological Assembly 1  

Global Symmetry: Icosahedral - I  (Explore in 3D)
Global Stoichiometry: Homo 180-mer - A180 

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

Macromolecule Content

• Total Structure Weight: 42.41 kDa 
• Atom Count: 2,808 
• Modelled Residue Count: 378 
• Deposited Residue Count: 396 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BACTERIOPHAGE Q BETA CAPSID	A, B, C	132	Qubevirus durum	Mutation(s): 0
UniProt
Find proteins for P03615 (Escherichia virus Qbeta) Explore P03615  Go to UniProtKB:  P03615

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.50 Å
• R-Value Work: 0.304 
• R-Value Observed: 0.304 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 477.8	α = 90
b = 295.2	β = 90
c = 477.8	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1996-07-11 
Deposition Author(s): Liljas, L., Golmohammadi, R.

Revision History  

• Version 1.0: 1996-07-11
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2023-04-19
  Type: Remediation
  Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Other, Refinement description