Solution structure of bacteriophage lambda gpFII

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

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This is version 1.3 of the entry. See complete history


The solution structure of the bacteriophage lambda head-tail joining protein, gpFII.

Maxwell, K.L.Yee, A.A.Arrowsmith, C.H.Gold, M.Davidson, A.R.

(2002) J Mol Biol 318: 1395-1404

  • DOI: https://doi.org/10.1016/s0022-2836(02)00276-0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The bacteriophage lambda FII protein (gpFII) is a 117 residue structural protein found in the phage particle that is required for the joining of phage heads and tails at the last step of morphogenesis. We have performed biophysical experiments to show that gpFII is stable, monomeric, and reversibly folded. We have also determined the atomic resolution structure of gpFII using NMR spectroscopy. gpFII is shown to possess a novel fold consisting of seven beta-strands and a short alpha-helix. It also displays two large unstructured regions at the N terminus (residues 1-24) and in a large loop near the middle of the protein (residues 46-62). We speculate that these unstructured regions become structured when gpFII assembles into the phage particle, and that these conformational changes play an important role in regulating the assembly pathway. Alignment of the gpFII sequence with those of homologues from other lambdoid phages has allowed us to putatively identify distinct surfaces on the gpFII structure that mediate binding to the phage head and tail.

  • Organizational Affiliation

    Department of Molecular and Medical Genetics, University of Toronto, Ont., Canada.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
gpFII117Lambdavirus lambdaMutation(s): 0 
Gene Names: FIIlambdap10
Find proteins for P03714 (Escherichia phage lambda)
Explore P03714 
Go to UniProtKB:  P03714
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03714
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-07-17
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-23
    Changes: Database references, Derived calculations