9ILP

Structure of the bacteriophage T5 portal complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Structures of Mature and Urea-Treated Empty Bacteriophage T5: Insights into Siphophage Infection and DNA Ejection.

Peng, Y.Tang, H.Xiao, H.Chen, W.Song, J.Zheng, J.Liu, H.

(2024) Int J Mol Sci 25

  • DOI: https://doi.org/10.3390/ijms25158479
  • Primary Citation of Related Structures:  
    8ZVI, 9ILP, 9ILV, 9IMH, 9IMV, 9INY, 9IOZ

  • PubMed Abstract: 

    T5 is a siphophage that has been extensively studied by structural and biochemical methods. However, the complete in situ structures of T5 before and after DNA ejection remain unknown. In this study, we used cryo-electron microscopy (cryo-EM) to determine the structures of mature T5 (a laboratory-adapted, fiberless T5 mutant) and urea-treated empty T5 (lacking the tip complex) at near-atomic resolutions. Atomic models of the head, connector complex, tail tube, and tail tip were built for mature T5, and atomic models of the connector complex, comprising the portal protein pb7, adaptor protein p144, and tail terminator protein p142, were built for urea-treated empty T5. Our findings revealed that the aforementioned proteins did not undergo global conformational changes before and after DNA ejection, indicating that these structural features were conserved among most myophages and siphophages. The present study elucidates the underlying mechanisms of siphophage infection and DNA ejection.


  • Organizational Affiliation

    Institute of Interdisciplinary Studies, Key Laboratory for Matter Microstructure and Function of Hunan Province, Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control, School of Physics and Electronics, Hunan Normal University, Changsha 410082, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Head completion protein170Escherichia phage T5Mutation(s): 0 
UniProt
Find proteins for Q6QGD9 (Escherichia phage T5)
Explore Q6QGD9 
Go to UniProtKB:  Q6QGD9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6QGD9
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Portal protein pb7403Escherichia phage T5Mutation(s): 0 
UniProt
Find proteins for Q6QGD5 (Escherichia phage T5)
Explore Q6QGD5 
Go to UniProtKB:  Q6QGD5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6QGD5
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China12034006
National Natural Science Foundation of China (NSFC)China32071209
National Natural Science Foundation of China (NSFC)China31971122
National Natural Science Foundation of China (NSFC)China32200994

Revision History  (Full details and data files)

  • Version 1.0: 2024-09-18
    Type: Initial release