3DDX

HK97 bacteriophage capsid Expansion Intermediate-II model


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • 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

Virus capsid expansion driven by the capture of mobile surface loops.

Lee, K.K.Gan, L.Tsuruta, H.Moyer, C.Conway, J.F.Duda, R.L.Hendrix, R.W.Steven, A.C.Johnson, J.E.

(2008) Structure 16: 1491-1502

  • DOI: 10.1016/j.str.2008.06.014
  • Primary Citation of Related Structures:  
    3DDX

  • PubMed Abstract: 
  • The capsids of tailed-DNA bacteriophages first assemble as procapsids, which mature by converting into a new form that is strong enough to contain a densely packed viral chromosome. We demonstrate that the intersubunit crosslinking that occurs during maturation of HK97 capsids actually promotes the structural transformation ...

    The capsids of tailed-DNA bacteriophages first assemble as procapsids, which mature by converting into a new form that is strong enough to contain a densely packed viral chromosome. We demonstrate that the intersubunit crosslinking that occurs during maturation of HK97 capsids actually promotes the structural transformation. Small-angle X-ray scattering and crosslinking assays reveal that a shift in the crosslink pattern accompanies conversion of a semimature particle, Expansion Intermediate-I/II, to a more mature state, Balloon. This transition occurs in a switch-like fashion. We find that crosslink formation shifts the global conformational balance to favor the balloon state. A pseudoatomic model of EI-I/II derived from cryo-EM provides insight into the relationship between crosslink formation and conformational switching.


    Organizational Affiliation

    Department of Molecular Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Major capsid protein ABCDEFG282Escherichia virus HK97Mutation(s): 0 
Gene Names: 5
Find proteins for P49861 (Enterobacteria phage HK97)
Explore P49861 
Go to UniProtKB:  P49861
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-11-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2019-11-06
    Changes: Data collection, Other