1Z1Z

NMR structure of the gpu tail protein from lambda bacteriophage


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The NMR structure of the gpU tail-terminator protein from bacteriophage lambda: identification of sites contributing to Mg(II)-mediated oligomerization and biological function.

Edmonds, L.Liu, A.Kwan, J.J.Avanessy, A.Caracoglia, M.Yang, I.Maxwell, K.L.Rubenstein, J.Davidson, A.R.Donaldson, L.W.

(2007) J Mol Biol 365: 175-186

  • DOI: 10.1016/j.jmb.2006.09.068
  • Primary Citation of Related Structures:  
    1Z1Z

  • PubMed Abstract: 
  • During the late stages of lambda bacteriophage assembly, the protein gpU terminates tail polymerization and participates at the interface between the mature capsid and tail components. When it engages the lambda tail, gpU undergoes a monomer-hexamer transition to achieve its biologically active form ...

    During the late stages of lambda bacteriophage assembly, the protein gpU terminates tail polymerization and participates at the interface between the mature capsid and tail components. When it engages the lambda tail, gpU undergoes a monomer-hexamer transition to achieve its biologically active form. Towards understanding how gpU participates in multiple protein-protein interactions, we have solved the structure of gpU in its monomeric state using NMR methods. The structure reveals a mixed alpha/beta motif with several dynamic loops at the periphery. Addition of 20 mM MgCl(2) is known to oligomerize gpU in the absence of its protein partners. Multiple image analysis of electron micrographs revealed ring-like structures of magnesium ion saturated gpU with a 30 A pore, consistent with its function as a portal for the passage of viral DNA into the host bacterium. The ability of magnesium ions to promote oligomerization was lost when substitutions were made at a cluster of acidic amino acids in the vicinity of helix alpha2 and the beta1-beta2 loop. Furthermore, substitutions at these sites abolished the biological activity of gpU.


    Related Citations: 
    • NMR assignment of the gpu tail protein from lambda bacteriophage
      Edmonds, L., Thirumoorthy, R.T., Liu, A., Davidson, A., Donaldson, L.W.
      () To be published --: --

    Organizational Affiliation

    Department of Biology, York University, 4700 Keele Street, Canada M3J 1P3.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Minor tail protein U A131Escherichia virus LambdaMutation(s): 0 
Gene Names: gpuUlambdap12
Find proteins for P03732 (Escherichia phage lambda)
Explore P03732 
Go to UniProtKB:  P03732
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 
  • OLDERADO: 1Z1Z Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-04-18
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance