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TitleStructural analysis and proteomics studies on the Myoviridae vibriophage M4.
Journal, issue, pagesArch Virol, Vol. 164, Issue 2, Page 523-534, Year 2019
Publish dateNov 27, 2018
AuthorsSayani Das / Moumita Dutta / Anindito Sen / Amar N Ghosh /
PubMed AbstractBacteriophages play a crucial role in tracking the spread of bacterial epidemics. The frequent emergence of antibiotic-resistant bacterial strains throughout the world has motivated studies on ...Bacteriophages play a crucial role in tracking the spread of bacterial epidemics. The frequent emergence of antibiotic-resistant bacterial strains throughout the world has motivated studies on bacteriophages that can potentially be used in phage therapy as an alternative to conventional antibiotic treatment. A recent outbreak of cholera in Haiti took many lives due to a rapid development of resistance to the available antibiotics. The properties of vibriophages, bacteriophages that infect Vibrio cholerae, are therefore of practical interest. A detailed understanding of the structure and assembly of a vibriophage is potentially useful in developing phage therapy against cholera as well as for fabricating artificial nanocontainers. Therefore, the aim of the present study was to determine the three-dimensional organization of vibriophage M4 at sub-nanometer resolution by electron microscopy and single-particle analysis techniques to facilitate its use as a therapeutic agent. We found that M4 has a large capsid with T = 13 icosahedral symmetry and a long contractile tail. This double-stranded DNA phage also contains a head-to-tail connector protein complex that joins the capsid to the tail and a prominent baseplate at the end of the tail. This study also provides information regarding the proteome of this phage, which is proteins similar to that of other Myoviridae phages, and most of the encoded proteins are structural proteins that form the exquisite architecture of this bacteriophage.
External linksArch Virol / PubMed:30478789
MethodsEM (single particle) / EM (helical sym.)
Resolution15.4 - 18.2 Å
Structure data

EMDB-9676:
Vibrio phage M4 capsid
Method: EM (single particle) / Resolution: 15.4 Å

EMDB-9679:
Tail structure of Vibrio phage M4
Method: EM (helical sym.) / Resolution: 18.2 Å

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