Structure of Lactococcal Bacteriophage p2 Receptor Binding Protein

Experimental Data Snapshot

  • Resolution: 2.30 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.221 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Lactococcal Bacteriophage P2 Receptor-Binding Protein Structure Suggests a Common Ancestor Gene with Bacterial and Mammalian Viruses.

Spinelli, S.Desmyter, A.Verrips, C.T.Dehaard, H.J.W.Moineau, S.Cambillau, C.

(2006) Nat Struct Mol Biol 13: 85

  • DOI: https://doi.org/10.1038/nsmb1029
  • Primary Citation of Related Structures:  
    2BSD, 2BSE

  • PubMed Abstract: 

    Lactococcus lactis is a Gram-positive bacterium used extensively by the dairy industry for the manufacture of fermented milk products. The double-stranded DNA bacteriophage p2 infects specific L. lactis strains using a receptor-binding protein (RBP) located at the tip of its noncontractile tail. We have solved the crystal structure of phage p2 RBP, a homotrimeric protein composed of three domains: the shoulders, a beta-sandwich attached to the phage; the neck, an interlaced beta-prism; and the receptor-recognition head, a seven-stranded beta-barrel. We used the complex of RBP with a neutralizing llama VHH domain to identify the receptor-binding site. Structural similarity between the recognition-head domain of phage p2 and those of adenoviruses and reoviruses, which invade mammalian cells, suggests that these viruses, despite evolutionary distant targets, lack of sequence similarity and the different chemical nature of their genomes (DNA versus RNA), might have a common ancestral gene.

  • Organizational Affiliation

    Architecture et Fonction des Macromolécules Biologiques, UMR 6098 CNRS and Universités d'Aix-Marseille I & II, Campus de Luminy, 163 Av. de Luminy 13288 Marseille Cedex 9, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C
264Peduovirus P2Mutation(s): 0 
Find proteins for Q71AW2 (Lactococcus phage p2)
Explore Q71AW2 
Go to UniProtKB:  Q71AW2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ71AW2
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.221 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.108α = 90
b = 96.25β = 90
c = 149.491γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-11-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2018-01-24
    Changes: Source and taxonomy
  • Version 1.3: 2024-05-08
    Changes: Data collection, Database references, Other, Refinement description