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- PDB-8ej5: Tail tip structure of Staphylococcus phage Andhra -

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Basic information

Entry
Database: PDB / ID: 8ej5
TitleTail tip structure of Staphylococcus phage Andhra
Components
  • gp1, tail tip protein
  • gp10, tail tip lysin (spike)
KeywordsVIRUS / phage tail
Function / homologyCHAP domain profile. / CHAP domain / CHAP domain / Peptidase
Function and homology information
Biological speciesStaphylococcus phage Andhra (virus)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.9 Å
AuthorsKizziah, J.L. / Hawkins, N.C. / Dokland, T.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI156636 United States
CitationJournal: Sci Adv / Year: 2022
Title: Structure and host specificity of bacteriophage Andhra.
Authors: N'Toia C Hawkins / James L Kizziah / Asma Hatoum-Aslan / Terje Dokland /
Abstract: is an opportunistic pathogen of the human skin, often associated with infections of implanted medical devices. Staphylococcal picoviruses are a group of strictly lytic, short-tailed bacteriophages ... is an opportunistic pathogen of the human skin, often associated with infections of implanted medical devices. Staphylococcal picoviruses are a group of strictly lytic, short-tailed bacteriophages with compact genomes that are attractive candidates for therapeutic use. Here, we report the structure of the complete virion of -infecting phage Andhra, determined using high-resolution cryo-electron microscopy, allowing atomic modeling of 11 capsid and tail proteins. The capsid is a = 4 icosahedron containing a unique stabilizing capsid lining protein. The tail includes 12 trimers of a unique receptor binding protein (RBP), a lytic protein that also serves to anchor the RBPs to the tail stem, and a hexameric tail knob that acts as a gatekeeper for DNA ejection. Using structure prediction with AlphaFold, we identified the two proteins that comprise the tail tip heterooctamer. Our findings elucidate critical features for virion assembly, host recognition, and penetration.
History
DepositionSep 16, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 14, 2022Provider: repository / Type: Initial release
Revision 1.1Jun 19, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: gp10, tail tip lysin (spike)
B: gp1, tail tip protein
C: gp1, tail tip protein
D: gp1, tail tip protein


Theoretical massNumber of molelcules
Total (without water)83,5984
Polymers83,5984
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein gp10, tail tip lysin (spike)


Mass: 51675.402 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Staphylococcus phage Andhra (virus) / Gene: Andhra_10 / Production host: Staphylococcus phage Andhra (virus) / References: UniProt: A0A1S6L1H0
#2: Protein gp1, tail tip protein


Mass: 10640.743 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Staphylococcus phage Andhra (virus) / Production host: Staphylococcus phage Andhra (virus)

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Staphylococcus phage Andhra / Type: VIRUS / Entity ID: #2, #1 / Source: RECOMBINANT
Source (natural)Organism: Staphylococcus phage Andhra (virus)
Source (recombinant)Organism: Staphylococcus epidermidis (bacteria)
Details of virusEmpty: NO / Enveloped: NO / Isolate: SPECIES / Type: VIRION
Natural hostOrganism: Staphylococcus epidermidis
Buffer solutionpH: 7.8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 3500 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 39 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 4.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 98203 / Symmetry type: POINT

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