Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report | Predict Membrane 

Global Symmetry: Helical - H  (3D View)
Global Stoichiometry: Homo 35-mer - A35 

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

Macromolecule Content

• Total Structure Weight: 4.61 kDa 
• Atom Count: 322 
• Modelled Residue Count: 46 
• Deposited Residue Count: 46 
• Unique protein chains: 1

2XKM

Consensus structure of Pf1 filamentous bacteriophage from X-ray fibre diffraction and solid-state NMR

• PDB DOI: 10.2210/pdb2XKM/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Pseudomonas virus Pf1
• Mutation(s): No 
• Membrane Protein: Yes  OPMMemProtMD


• Deposited: 2010-07-09 Released: 2010-11-24 
• Deposition Author(s): Straus, S.K., P Scott, W.R., Schwieters, C.D., Marvin, D.A.

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Experimental Data Snapshot

• Method: FIBER DIFFRACTION
• Resolution: 3.30 Å

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• Method: SOLID-STATE NMR
• Conformers Submitted: 1 

Literature

Consensus Structure of Pf1 Filamentous Bacteriophage from X-Ray Fibre Diffraction and Solid-State NMR.

Straus, S.K., Scott, W.R., Schwieters, C.D., Marvin, D.A.

(2011) Eur Biophys J 40: 221

• PubMed: 21082179 
• DOI: 10.1007/s00249-010-0640-9
• Primary Citation of Related Structures:  
  2XKM


• PubMed Abstract: 
  

Filamentous bacteriophages (filamentous bacterial viruses or Inovirus) are simple and well-characterised macromolecular assemblies that are widely used in molecular biology and biophysics, both as paradigms for studying basic biological questions and as practical tools in areas as diverse as immunology and solid-state physics. The strains fd, M13 and f1 are virtually identical filamentous phages that infect bacteria expressing F-pili, and are sometimes grouped as the Ff phages. For historical reasons fd has often been used for structural studies, but M13 and f1 are more often used for biological experiments. Many other strains have been identified that are genetically quite distinct from Ff and yet have a similar molecular structure and life cycle. One of these, Pf1, gives the highest resolution X-ray fibre diffraction patterns known for filamentous bacteriophage. These diffraction patterns have been used in the past to derive a molecular model for the structure of the phage. Solid-state NMR experiments have been used in separate studies to derive a significantly different model of Pf1. Here we combine previously published X-ray fibre diffraction data and solid-state NMR data to give a consensus structure model for Pf1 filamentous bacteriophage, and we discuss the implications of this model for assembly of the phage at the bacterial membrane.

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Related Citations: 

• Structural Basis of the Temperature Transition of Pf1 Bacteriophage.
  Thiriot, D.S., Nevzorov, A.A., Opella, S.J.
  (2005) Protein Sci 14: 1064

• Pf1 Filamentous Bacteriophage: Refinement of a Molecular Model by Simulated Annealing Using 3.3 A Resolution X-Ray Fibre Diffraction Data.
  Gonzalez, A., Nave, C., Marvin, D.A.
  (1995) Acta Crystallogr D Biol Crystallogr 51: 792

• The Hand of the Filamentous Bacteriophage Helix.
  Straus, S.K., Scott, W.R.P., Marvin, D.A.
  (2008) Eur Biophys J 37: 1077

• Dynamics of Telescoping Inovirus: A Mechanism for Assembly at Membrane Adhesions.
  Marvin, D.A.
  (1989) Int J Biol Macromol 11: 159

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Organizational Affiliation: 

Department of Chemistry, University of British Columbia, Vancouver, BC V6T1Z1, Canada.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CAPSID PROTEIN G8P	A	46	Pseudomonas virus Pf1	Mutation(s): 0  Gene Names: VIII Membrane Entity: Yes
UniProt
Find proteins for P03621 (Pseudomonas phage Pf1) Explore P03621  Go to UniProtKB:  P03621

Experimental Data & Validation

Experimental Data

• Method: FIBER DIFFRACTION
• Resolution: 3.30 Å
• Space Group: P 1
• OLDERADO: 2XKM Olderado

• Method: SOLID-STATE NMR
• Conformers Submitted: 1 

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 1	α = 90
b = 1	β = 90
c = 1	γ = 90

Software Package:

Software Name	Purpose
XPLOR-NIH	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-07-09 
• Released Date: 2010-11-24 
Deposition Author(s): Straus, S.K., P Scott, W.R., Schwieters, C.D., Marvin, D.A.

Revision History  

• Version 1.0: 2010-11-24
  Type: Initial release
  
• Version 1.1: 2013-11-27
  Changes: Data collection, Database references, Other, Version format compliance
• Version 1.2: 2019-09-18
  Changes: Data collection
• Version 1.3: 2021-04-28
  Changes: Data collection, Other