3ZIF

Cryo-EM structures of two intermediates provide insight into adenovirus assembly and disassembly


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.2 of the entry. See complete history


Literature

Cryo-Em Structures of Two Bovine Adenovirus Type 3 Intermediates

Cheng, L.Huang, X.Li, X.Xiong, W.Sun, W.Yang, C.Zhang, K.Wang, Y.Liu, H.Huang, X.Ji, G.Sun, F.Zheng, C.Zhu, P.

(2014) Virology 450: 174

  • DOI: 10.1016/j.virol.2013.12.012
  • Primary Citation of Related Structures:  
    3ZIF

  • PubMed Abstract: 
  • Adenoviruses (Ads) infect hosts from all vertebrate species and have been investigated as vaccine vectors. We report here near-atomic structures of two bovine Ad type 3 (BAd3) intermediates obtained by cryo-electron microscopy. A comparison between the two intermediate structures reveals that the differences are localized in the fivefold vertex region, while their facet structures are identical ...

    Adenoviruses (Ads) infect hosts from all vertebrate species and have been investigated as vaccine vectors. We report here near-atomic structures of two bovine Ad type 3 (BAd3) intermediates obtained by cryo-electron microscopy. A comparison between the two intermediate structures reveals that the differences are localized in the fivefold vertex region, while their facet structures are identical. The overall facet structure of BAd3 exhibits a similar structure to human Ads; however, BAd3 protein IX has a unique conformation. Mass spectrometry and cryo-electron tomography analyses indicate that one intermediate structure represents the stage during DNA encapsidation, whilst the other intermediate structure represents a later stage. These results also suggest that cleavage of precursor protein VI occurs during, rather than after, the DNA encapsidation process. Overall, our results provide insights into the mechanism of Ad assembly, and allow the first structural comparison between human and nonhuman Ads at backbone level.


    Organizational Affiliation

    National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. Electronic address: zhup@ibp.ac.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HEXON PROTEIN
A, B, C, D, E, F, G, H
A, B, C, D, E, F, G, H, I, J, K, L
911Bovine adenovirus 3Mutation(s): 0 
Gene Names: L3
Find proteins for P03278 (Bovine adenovirus B serotype 3)
Explore P03278 
Go to UniProtKB:  P03278
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PENTON PROTEINM482Bovine adenovirus 3Mutation(s): 0 
Gene Names: L2
Find proteins for O71096 (Bovine adenovirus B serotype 3)
Explore O71096 
Go to UniProtKB:  O71096
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
PIXN, O, P, Q125Bovine adenovirus 3Mutation(s): 0 
Find proteins for Q64845 (Bovine adenovirus B serotype 3)
Explore Q64845 
Go to UniProtKB:  Q64845
Protein Feature View
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
PVIIIR216Bovine adenovirus 3Mutation(s): 0 
Gene Names: L4
Find proteins for O92788 (Bovine adenovirus B serotype 3)
Explore O92788 
Go to UniProtKB:  O92788
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.50 Å
  • 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: 2014-01-22
    Type: Initial release
  • Version 1.1: 2014-02-19
    Changes: Database references
  • Version 1.2: 2017-08-23
    Changes: Data collection