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TitleStructure and transformation of bacteriophage A511 baseplate and tail upon infection of  cells.
Journal, issue, pagesEMBO J, Vol. 38, Issue 3, Year 2019
Publish dateFeb 1, 2019
AuthorsRicardo C Guerrero-Ferreira / Mario Hupfeld / Sergey Nazarov / Nicholas Mi Taylor / Mikhail M Shneider / Jagan M Obbineni / Martin J Loessner / Takashi Ishikawa / Jochen Klumpp / Petr G Leiman /
PubMed AbstractContractile injection systems (bacteriophage tails, type VI secretions system, R-type pyocins, etc.) utilize a rigid tube/contractile sheath assembly for breaching the envelope of bacterial and ...Contractile injection systems (bacteriophage tails, type VI secretions system, R-type pyocins, etc.) utilize a rigid tube/contractile sheath assembly for breaching the envelope of bacterial and eukaryotic cells. Among contractile injection systems, bacteriophages that infect Gram-positive bacteria represent the least understood members. Here, we describe the structure of bacteriophage A511 tail in its pre- and post-host attachment states (extended and contracted, respectively) using cryo-electron microscopy, cryo-electron tomography, and X-ray crystallography. We show that the structure of the tube-baseplate complex of A511 is similar to that of phage T4, but the A511 baseplate is decorated with different receptor-binding proteins, which undergo a large structural transformation upon host attachment and switch the symmetry of the baseplate-tail fiber assembly from threefold to sixfold. For the first time under native conditions, we show that contraction of the phage tail sheath assembly starts at the baseplate and propagates through the sheath in a domino-like motion.
External linksEMBO J / PubMed:30606715 / PubMed Central
MethodsEM (single particle) / X-ray diffraction
Resolution2.38 - 16.0 Å
Structure data

EMDB-7559:
Bacteriophage A511 baseplate in post-host attachment state (urea-induced)
Method: EM (single particle) / Resolution: 14.0 Å

EMDB-7560:
Bacteriophage A511 baseplate in pre-host attachment state
Method: EM (single particle) / Resolution: 14.0 Å

EMDB-7561:
Bacteriophage A511 baseplate in post-host attachment state
Method: EM (single particle) / Resolution: 16.0 Å

PDB-6hhk:
Structure of gp105 of Listeria bacteriophage A511
Method: X-RAY DIFFRACTION / Resolution: 2.38 Å

Chemicals

ChemComp-CL:
Unknown entry / Chloride

ChemComp-HOH:
WATER / Water

Source
  • listeria phage a511 (virus)
KeywordsVIRAL PROTEIN / bacteriophage baseplate protein

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