Database of articles cited by EMDB/PDB/SASBDB data

Keywords
Structure methods	All X-ray diffraction NMR electron microscopy small angle scattering neutron diffraction fiber diffraction powder diffraction infrared spectroscopy EPR fluorescence transfer theoretical model Hybrid
Author
Journal
IF	>30 >20 >10 >5 all

Title	Deciphering Bacteriophage T5 Host Recognition Mechanism and Infection Trigger.
Journal, issue, pages	J Virol, Vol. 97, Issue 3, Page e0158422, Year 2023
Publish date	Mar 30, 2023
Authors	Séraphine Degroux / Grégory Effantin / Romain Linares / Guy Schoehn / Cécile Breyton /
PubMed Abstract	Bacteriophages, viruses infecting bacteria, recognize their host with high specificity, binding to either saccharide motifs or proteins of the cell wall of their host. In the majority of ...Bacteriophages, viruses infecting bacteria, recognize their host with high specificity, binding to either saccharide motifs or proteins of the cell wall of their host. In the majority of bacteriophages, this host recognition is performed by receptor binding proteins (RBPs) located at the extremity of a tail. Interaction between the RBPs and the host is the trigger for bacteriophage infection, but the molecular details of the mechanisms are unknown for most bacteriophages. Here, we present the electron cryomicroscopy (cryo-EM) structure of bacteriophage T5 RBP in complex with its Escherichia coli receptor, the iron ferrichrome transporter FhuA. Monomeric RBP is located at the extremity of T5's long flexible tail, and its irreversible binding to FhuA commits T5 to infection. Analysis of the structure of RBP within the complex, comparison with its AlphaFold2-predicted structure, and its fit into a previously determined map of the T5 tail tip in complex with FhuA allow us to propose a mechanism of transmission of the RBP receptor binding to the straight fiber, initiating the cascade of events that commits T5 to DNA ejection. Tailed bacteriophages specifically recognize their bacterial host by interaction of their receptor binding protein(s) (RBPs) with saccharides and/or proteins located at the surface of their prey. This crucial interaction commits the virus to infection, but the molecular details of this mechanism are unknown for the majority of bacteriophages. We determined the structure of bacteriophage T5 RBP in complex with its E. coli receptor, FhuA, by cryo-EM. This first structure of an RBP bound to its protein receptor allowed us to propose a mechanism of transmission of host recognition to the rest of the phage, ultimately opening the capsid and perforating the cell wall and, thus, allowing safe channeling of the DNA into the host cytoplasm.
External links	J Virol / PubMed:36779755 / PubMed Central
Methods	EM (single particle)
Resolution	2.6 Å
Structure data	15802 8b14 EMDB-15802, PDB-8b14: T5 Receptor Binding Protein pb5 in complex with its E. coli receptor FhuA Method: EM (single particle) / Resolution: 2.6 Å
Chemicals	ChemComp-DDQ: DECYLAMINE-N,N-DIMETHYL-N-OXIDE ChemComp-LU9: [(2R,3S,4R,5R,6R)-2-[[(2R,4R,5R,6R)-6-[(1R)-1,2-bis(oxidanyl)ethyl]-4-[(2R,4R,5R,6R)-6-[(1R)-1,2-bis(oxidanyl)ethyl]-2-carboxy-4,5-bis(oxidanyl)oxan-2-yl]oxy-2-carboxy-5-oxidanyl-oxan-2-yl]oxymethyl]-5-[[(3R)-3-dodecanoyloxytetradecanoyl]amino]-4-(3-nonanoyloxypropanoyloxy)-6-[[(2R,3S,4R,5R,6R)-3-oxidanyl-4-[(3S)-3-oxidanyltetradecanoyl]oxy-5-[[(3R)-3-oxidanyltridecanoyl]amino]-6-phosphonatooxy-oxan-2-yl]methoxy]oxan-3-yl] phosphate / toxin*YM / Lipopolysaccharide
Source	escherichia coli (E. coli) Escherichia virus T5 escherichia phage t5 (virus)
Keywords	VIRAL PROTEIN / bacteriophage / receptor / complex / RPB