3J2M

The X-ray structure of the gp15 hexamer and the model of the gp18 protein fitted into the cryo-EM reconstruction of the extended T4 tail


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 15.0 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The molecular architecture of the bacteriophage t4 neck.

Fokine, A.Zhang, Z.Kanamaru, S.Bowman, V.D.Aksyuk, A.A.Arisaka, F.Rao, V.B.Rossmann, M.G.

(2013) J Mol Biol 425: 1731-1744

  • DOI: 10.1016/j.jmb.2013.02.012
  • Primary Citation of Related Structures:  
    4HUD, 4HUH, 3J2M, 3J2N, 3J2O

  • PubMed Abstract: 
  • A hexamer of the bacteriophage T4 tail terminator protein, gp15, attaches to the top of the phage tail stabilizing the contractile sheath and forming the interface for binding of the independently assembled head. Here we report the crystal structure of the gp15 hexamer, describe its interactions in T4 virions that have either an extended tail or a contracted tail, and discuss its structural relationship to other phage proteins ...

    A hexamer of the bacteriophage T4 tail terminator protein, gp15, attaches to the top of the phage tail stabilizing the contractile sheath and forming the interface for binding of the independently assembled head. Here we report the crystal structure of the gp15 hexamer, describe its interactions in T4 virions that have either an extended tail or a contracted tail, and discuss its structural relationship to other phage proteins. The neck of T4 virions is decorated by the "collar" and "whiskers", made of fibritin molecules. Fibritin acts as a chaperone helping to attach the long tail fibers to the virus during the assembly process. The collar and whiskers are environment-sensing devices, regulating the retraction of the long tail fibers under unfavorable conditions, thus preventing infection. Cryo-electron microscopy analysis suggests that twelve fibritin molecules attach to the phage neck with six molecules forming the collar and six molecules forming the whiskers.


    Related Citations: 
    • The tail structure of bacteriophage T4 and its mechanism of contraction.
      Kostyuchenko, V.A., Chipman, P.R., Leiman, P.G., Arisaka, F., Mesyanzhinov, V.V., Rossmann, M.G.
      (2005) Nat Struct Mol Biol 12: 810

    Organizational Affiliation

    Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tail connector protein Gp15 ABCDEF272Escherichia virus T4Mutation(s): 0 
Gene Names: 15
Find proteins for P11112 (Enterobacteria phage T4)
Explore P11112 
Go to UniProtKB:  P11112
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Tail sheath protein Gp18 UVWXYZ659Escherichia virus T4Mutation(s): 1 
Gene Names: 18
Find proteins for P13332 (Enterobacteria phage T4)
Explore P13332 
Go to UniProtKB:  P13332
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 15.0 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-03-06
    Type: Initial release
  • Version 1.1: 2013-05-15
    Changes: Database references
  • Version 1.2: 2018-07-18
    Changes: Data collection