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- PDB-9e7m: In situ cryoEM structure of bacteriophage Ur-lambda tail tip complex -

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Basic information

Entry
Database: PDB / ID: 9e7m
TitleIn situ cryoEM structure of bacteriophage Ur-lambda tail tip complex
Components
  • (Tail tip assembly protein ...) x 2
  • (Tail tip protein ...) x 2
  • Tail fiber protein
  • Tail tube protein
  • Tape measure protein
  • Tip attachment protein J
KeywordsVIRAL PROTEIN / bacteriophage / tail tip complex
Function / homology
Function and homology information


virus tail, tube / symbiont genome ejection through host cell envelope, long flexible tail mechanism / virus tail, fiber / viral tail assembly / virus tail / adhesion receptor-mediated virion attachment to host cell / 4 iron, 4 sulfur cluster binding / host cell cytoplasm / entry receptor-mediated virion attachment to host cell / receptor-mediated virion attachment to host cell ...virus tail, tube / symbiont genome ejection through host cell envelope, long flexible tail mechanism / virus tail, fiber / viral tail assembly / virus tail / adhesion receptor-mediated virion attachment to host cell / 4 iron, 4 sulfur cluster binding / host cell cytoplasm / entry receptor-mediated virion attachment to host cell / receptor-mediated virion attachment to host cell / symbiont entry into host cell / virion attachment to host cell / structural molecule activity / metal ion binding
Similarity search - Function
Lambda-like tail fibre protein, N-terminal / Prophage tail fibre N-terminal / Bacteriophage lambda, Tail fiber protein, repeat-1 / Phage tail fibre repeat / Bacteriophage lambda, Tail fiber protein, repeat-2 / Phage tail fibre repeat / Bacteriophage tail tape measure, C-terminal / Bacteriophage tail tape measure, N-terminal / Tape measure protein / Prophage tail length tape measure protein ...Lambda-like tail fibre protein, N-terminal / Prophage tail fibre N-terminal / Bacteriophage lambda, Tail fiber protein, repeat-1 / Phage tail fibre repeat / Bacteriophage lambda, Tail fiber protein, repeat-2 / Phage tail fibre repeat / Bacteriophage tail tape measure, C-terminal / Bacteriophage tail tape measure, N-terminal / Tape measure protein / Prophage tail length tape measure protein / Lambda phage tail tape-measure protein (Tape_meas_lam_C) / Bacteriophage lambda, Tail tip protein L / Bacteriophage lambda, Tail tip protein M / Bacteriophage lambda tail assembly I / Phage minor tail protein L / Phage minor tail protein / Bacteriophage lambda tail assembly protein I / Phage tail collar domain superfamily / Phage tail collar domain / : / Phage Tail Collar Domain / Domain of unknown function DUF3672 / : / Tip attachment protein J, C-terminal receptor binding domain / Tip attachment protein J, Ig-like domain / Tip attachment protein J second Ig-like domain / : / : / Tip attachment protein J,FNIII-A domain / Domain of unknown function DUF1983 / Bacteriophage tail tip fiber protein / Lambda phage tail tube protein / Lambda phage tail tube protein, TTP / Tip attachment protein J / Putative phage tail protein / Carboxypeptidase-like, regulatory domain superfamily / Bacterial Ig-like domain (group 2) / Bacterial Ig-like domain 2 / Bacterial Ig-like domain, group 2 / Beta-grasp domain superfamily / Fibronectin type 3 domain / Fibronectin type-III domain profile. / Fibronectin type III / Fibronectin type III superfamily / Immunoglobulin-like fold
Similarity search - Domain/homology
IRON/SULFUR CLUSTER / Tail tip assembly protein I / Tail tube protein / Tape measure protein / Tail tip protein M / Tail tip protein L / Tip attachment protein J / Tail fiber protein
Similarity search - Component
Biological speciesEscherichia phage Lambda (virus)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.37 Å
AuthorsYu, H. / Liu, J. / Molineux, I.J.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)124378 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)110243 United States
CitationJournal: To Be Published
Title: Structural basis of bacteriophage Ur-lambda infection initiation
Authors: Yu, H. / Liu, J. / Molineux, I.J.
History
DepositionNov 3, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 5, 2025Provider: repository / Type: Initial release
Revision 1.0Nov 5, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Nov 5, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Nov 5, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 5, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 5, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Nov 5, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
Ha: Tape measure protein
Ia: Tail tip assembly protein I
Hb: Tape measure protein
Ib: Tail tip assembly protein I
Hc: Tape measure protein
Ic: Tail tip assembly protein I
Ja: Tip attachment protein J
Jb: Tip attachment protein J
Jc: Tip attachment protein J
Lc: Tail tip protein L
Lb: Tail tip protein L
La: Tail tip protein L
Ta: Tail fiber protein
Tb: Tail fiber protein
Tc: Tail fiber protein
Td: Tail fiber protein
Te: Tail fiber protein
Tf: Tail fiber protein
Tg: Tail fiber protein
Tl: Tail fiber protein
Th: Tail fiber protein
Ti: Tail fiber protein
Tj: Tail fiber protein
Tk: Tail fiber protein
Ma: Tail tip protein M
Mb: Tail tip protein M
Mc: Tail tip protein M
Md: Tail tip protein M
Me: Tail tip protein M
Mf: Tail tip protein M
Va: Tail tube protein
Vb: Tail tube protein
Vc: Tail tube protein
Vd: Tail tube protein
Ve: Tail tube protein
Vf: Tail tube protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)689,33639
Polymers688,28136
Non-polymers1,0553
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Tail tip assembly protein ... , 2 types, 3 molecules IaIbIc

#2: Protein Tail tip assembly protein I


Mass: 9322.579 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia phage Lambda (virus) / Gene: I, lambdap20 / Production host: Escherichia coli K-12 (bacteria) / References: UniProt: P03730
#3: Protein Tail tip assembly protein I


Mass: 9308.553 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia phage Lambda (virus) / Gene: I, lambdap20 / Production host: Escherichia coli K-12 (bacteria) / References: UniProt: P03730

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Protein , 3 types, 21 molecules JaJbJcTaTbTcTdTeTfTgTlThTiTjTkVaVbVcVdVeVf

#4: Protein Tip attachment protein J / Central tail fiber / Host specificity protein J


Mass: 92362.289 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia phage Lambda (virus) / Gene: J, lambdap21 / Production host: Escherichia coli K-12 (bacteria) / References: UniProt: P03749
#6: Protein
Tail fiber protein / stf / Gene product 27 / gp27


Mass: 10092.285 Da / Num. of mol.: 12
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia phage Lambda (virus) / Gene: stf, lambdap27 / Production host: Escherichia coli K-12 (bacteria) / References: UniProt: P03764
#8: Protein
Tail tube protein / TTP / Gene product V / gpV / Major tail protein V


Mass: 16540.227 Da / Num. of mol.: 6
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia phage Lambda (virus) / Gene: V, lambdap13 / Production host: Escherichia coli K-12 (bacteria) / References: UniProt: P03733

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Tail tip protein ... , 2 types, 9 molecules LcLbLaMaMbMcMdMeMf

#5: Protein Tail tip protein L


Mass: 25730.578 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia phage Lambda (virus) / Gene: L, lambdap18 / Production host: Escherichia coli K-12 (bacteria) / References: UniProt: P03738
#7: Protein
Tail tip protein M


Mass: 12547.373 Da / Num. of mol.: 6
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia phage Lambda (virus) / Gene: M, lambdap17 / Production host: Escherichia coli K-12 (bacteria) / References: UniProt: P03737

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Protein/peptide / Non-polymers , 2 types, 6 molecules HaHbHc

#1: Protein/peptide Tape measure protein / TMP / Gene product H / gpH / Minor tail protein H


Mass: 3471.985 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia phage Lambda (virus) / Gene: H, lambdap16 / Production host: Escherichia coli K-12 (bacteria) / References: UniProt: P03736
#9: Chemical ChemComp-SF4 / IRON/SULFUR CLUSTER


Mass: 351.640 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Fe4S4 / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY
Has protein modificationN

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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: Escherichia phage Ur-lambda / Type: VIRUS / Entity ID: #1-#8 / Source: NATURAL
Source (natural)Organism: Escherichia phage Ur-lambda (virus)
Details of virusEmpty: NO / Enveloped: NO / Isolate: STRAIN / Type: VIRION
Buffer solutionpH: 7.6
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: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1200 nm / Nominal defocus min: 600 nm
Image recordingElectron dose: 30 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.21_5190 / Category: model refinement
CTF correctionType: NONE
3D reconstructionResolution: 3.37 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 6517 / Symmetry type: POINT
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 94.58 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.003549272
ELECTRON MICROSCOPYf_angle_d0.659867023
ELECTRON MICROSCOPYf_chiral_restr0.04437493
ELECTRON MICROSCOPYf_plane_restr0.00448744
ELECTRON MICROSCOPYf_dihedral_angle_d4.84466811

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