+Open data
-Basic information
Entry | Database: PDB / ID: 8k37 | |||||||||||||||
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Title | Structure of the bacteriophage lambda neck | |||||||||||||||
Components |
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Keywords | VIRAL PROTEIN / Complex | |||||||||||||||
Function / homology | Function and homology information virus tail, tube / symbiont genome ejection through host cell envelope, long flexible tail mechanism / viral tail assembly / virus tail / virion assembly / virion component / host cell cytoplasm Similarity search - Function | |||||||||||||||
Biological species | Escherichia phage Lambda (virus) | |||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.5 Å | |||||||||||||||
Authors | Xiao, H. / Tan, L. / Cheng, L.P. / Liu, H.R. | |||||||||||||||
Funding support | China, 4items
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Citation | Journal: PLoS Biol / Year: 2023 Title: Structure of the siphophage neck-Tail complex suggests that conserved tail tip proteins facilitate receptor binding and tail assembly. Authors: Hao Xiao / Le Tan / Zhixue Tan / Yewei Zhang / Wenyuan Chen / Xiaowu Li / Jingdong Song / Lingpeng Cheng / Hongrong Liu / Abstract: Siphophages have a long, flexible, and noncontractile tail that connects to the capsid through a neck. The phage tail is essential for host cell recognition and virus-host cell interactions; ...Siphophages have a long, flexible, and noncontractile tail that connects to the capsid through a neck. The phage tail is essential for host cell recognition and virus-host cell interactions; moreover, it serves as a channel for genome delivery during infection. However, the in situ high-resolution structure of the neck-tail complex of siphophages remains unknown. Here, we present the structure of the siphophage lambda "wild type," the most widely used, laboratory-adapted fiberless mutant. The neck-tail complex comprises a channel formed by stacked 12-fold and hexameric rings and a 3-fold symmetrical tip. The interactions among DNA and a total of 246 tail protein molecules forming the tail and neck have been characterized. Structural comparisons of the tail tips, the most diversified region across the lambda and other long-tailed phages or tail-like machines, suggest that their tail tip contains conserved domains, which facilitate tail assembly, receptor binding, cell adsorption, and DNA retaining/releasing. These domains are distributed in different tail tip proteins in different phages or tail-like machines. The side tail fibers are not required for the phage particle to orient itself vertically to the surface of the host cell during attachment. | |||||||||||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8k37.cif.gz | 405 KB | Display | PDBx/mmCIF format |
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PDB format | pdb8k37.ent.gz | 333.2 KB | Display | PDB format |
PDBx/mmJSON format | 8k37.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8k37_validation.pdf.gz | 1.5 MB | Display | wwPDB validaton report |
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Full document | 8k37_full_validation.pdf.gz | 1.5 MB | Display | |
Data in XML | 8k37_validation.xml.gz | 73.2 KB | Display | |
Data in CIF | 8k37_validation.cif.gz | 112 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/k3/8k37 ftp://data.pdbj.org/pub/pdb/validation_reports/k3/8k37 | HTTPS FTP |
-Related structure data
Related structure data | 36846MC 8k35C 8k36C 8k38C 8k39C M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 25831.779 Da / Num. of mol.: 6 / Source method: isolated from a natural source / Source: (natural) Escherichia phage Lambda (virus) / References: UniProt: P03733 #2: Protein | Mass: 14659.124 Da / Num. of mol.: 6 / Source method: isolated from a natural source / Source: (natural) Escherichia phage Lambda (virus) / References: UniProt: P03732 #3: Protein | Mass: 12775.037 Da / Num. of mol.: 6 / Source method: isolated from a natural source / Source: (natural) Escherichia phage Lambda (virus) / References: UniProt: P03714 |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: Escherichia phage Lambda / Type: VIRUS / Entity ID: all / Source: NATURAL |
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Source (natural) | Organism: Escherichia phage Lambda (virus) |
Details of virus | Empty: NO / Enveloped: NO / Isolate: SPECIES / Type: VIRION |
Buffer solution | pH: 7.4 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2200 nm / Nominal defocus min: 1600 nm |
Image recording | Electron dose: 32 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
-Processing
CTF correction | Type: NONE | ||||||||||||||||||||||||
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3D reconstruction | Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 75098 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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