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TitleStructural basis of bacteriophage T5 infection trigger and cell wall perforation.
Journal, issue, pagesSci Adv, Vol. 9, Issue 12, Page eade9674, Year 2023
Publish dateMar 24, 2023
AuthorsRomain Linares / Charles-Adrien Arnaud / Grégory Effantin / Claudine Darnault / Nathan Hugo Epalle / Elisabetta Boeri Erba / Guy Schoehn / Cécile Breyton /
PubMed AbstractMost bacteriophages present a tail allowing host recognition, cell wall perforation, and viral DNA channeling from the capsid to the infected bacterium cytoplasm. The majority of tailed phages bear a ...Most bacteriophages present a tail allowing host recognition, cell wall perforation, and viral DNA channeling from the capsid to the infected bacterium cytoplasm. The majority of tailed phages bear a long flexible tail () at the tip of which receptor binding proteins (RBPs) specifically interact with their host, triggering infection. In siphophage T5, the unique RBP is located at the extremity of a central fiber. We present the structures of T5 tail tip, determined by cryo-electron microscopy before and after interaction with its receptor, FhuA, reconstituted into nanodisc. These structures bring out the important conformational changes undergone by T5 tail tip upon infection, which include bending of T5 central fiber on the side of the tail tip, tail anchoring to the membrane, tail tube opening, and formation of a transmembrane channel. The data allow to detail the first steps of an otherwise undescribed infection mechanism.
External linksSci Adv / PubMed:36961893 / PubMed Central
MethodsEM (single particle)
Resolution3.45 - 4.32 Å
Structure data

EMDB-13953, PDB-7qg9:
Tail tip of siphophage T5 : common core proteins
Method: EM (single particle) / Resolution: 3.45 Å

EMDB-14733, PDB-7zhj:
Tail tip of siphophage T5 : tip proteins
Method: EM (single particle) / Resolution: 3.53 Å

EMDB-14790: Tail tip of siphophage T5 : central fibre
PDB-7zlv: Tail tip of siphophage T5 : central fibre protein pb4
Method: EM (single particle) / Resolution: 4.22 Å

EMDB-14799, PDB-7zn2:
Tail tip of siphophage T5 : full complex after interaction with its bacterial receptor FhuA
Method: EM (single particle) / Resolution: 4.29 Å

EMDB-14800, PDB-7zn4:
Tail tip of siphophage T5 : bent fibre after interaction with its bacterial receptor FhuA
Method: EM (single particle) / Resolution: 4.32 Å

EMDB-14869, PDB-7zqb:
Tail tip of siphophage T5 : full structure
Method: EM (single particle) / Resolution: 3.88 Å

EMDB-14873, PDB-7zqp:
Tail tip of siphophage T5 : open cone after interaction with bacterial receptor FhuA
Method: EM (single particle) / Resolution: 3.6 Å

Source
  • Enterobacteria phage T5 (virus)
  • escherichia phage t5 (virus)
KeywordsVIRAL PROTEIN / Bacteriophage / Siphophage / T5 / baseplate / VIRUS LIKE PARTICLE

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