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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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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HEXON PROTEIN
A, B, C, D, E, F, G, H, I, J, K, L
A, B, C, D, E, F, G, H, I, J, K, L
911Bovine adenovirus 3Mutation(s): 0 
Gene Names: L3
UniProt
Find proteins for P03278 (Bovine adenovirus B serotype 3)
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Go to UniProtKB:  P03278
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UniProt GroupP03278
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PENTON PROTEINM482Bovine adenovirus 3Mutation(s): 0 
Gene Names: L2
UniProt
Find proteins for O71096 (Bovine adenovirus B serotype 3)
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UniProt GroupO71096
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
PIXN, O, P, Q125Bovine adenovirus 3Mutation(s): 0 
UniProt
Find proteins for Q64845 (Bovine adenovirus B serotype 3)
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UniProt GroupQ64845
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
PVIIIR216Bovine adenovirus 3Mutation(s): 0 
Gene Names: L4
UniProt
Find proteins for O92788 (Bovine adenovirus B serotype 3)
Explore O92788 
Go to UniProtKB:  O92788
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UniProt GroupO92788
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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