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- PDB-8yo4: structure of phage T4 topoisomerase II central domain bound with DNA -

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Basic information

Entry
Database: PDB / ID: 8yo4
Titlestructure of phage T4 topoisomerase II central domain bound with DNA
Components
  • DNA (5'-D(P*AP*TP*AP*TP*AP*TP*GP*TP*GP*TP*AP*TP*AP*TP*AP*TP*AP*CP*AP*CP*AP*CP*AP*T)-3')
  • DNA (5'-D(P*TP*GP*TP*GP*TP*GP*TP*AP*TP*AP*TP*AP*TP*AP*CP*AP*CP*AP*TP*AP*TP*AP*TP*A)-3')
  • DNA topoisomerase medium subunit
  • phage T4 topoisomerase II gp39-gp60 subunit
KeywordsISOMERASE / topoisomerase II
Function / homology
Function and homology information


sister chromatid segregation / DNA negative supercoiling activity / DNA topoisomerase (ATP-hydrolysing) / DNA topological change / protein-containing complex / DNA binding / ATP binding
Similarity search - Function
DNA topoisomerase II, eukaryotic-type / : / Topoisomerase (Topo) IIA-type catalytic domain profile. / DNA topoisomerase, type IIA, alpha-helical domain superfamily / DNA topoisomerase, type IIA, domain A / DNA topoisomerase, type IIA, domain A, alpha-beta / DNA gyrase/topoisomerase IV, subunit A / DNA Topoisomerase IV / DNA topoisomerase, type IIA-like domain superfamily
Similarity search - Domain/homology
DNA / DNA (> 10) / DNA topoisomerase medium subunit
Similarity search - Component
Biological speciesEscherichia phage T4 (virus)
DNA molecule (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsChen, Y.T. / Xin, Y.H. / Xian, R.Q.
Funding support China, 1items
OrganizationGrant numberCountry
Chinese Academy of Sciences China
CitationJournal: To be published
Title: structure of phage T4 topoisomerase II central domain bound with DNA
Authors: Chen, Y.T. / Xin, Y.H. / Xian, R.Q.
History
DepositionMar 12, 2024Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Sep 25, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: DNA topoisomerase medium subunit
C: phage T4 topoisomerase II gp39-gp60 subunit
B: DNA topoisomerase medium subunit
D: phage T4 topoisomerase II gp39-gp60 subunit
E: DNA (5'-D(P*TP*GP*TP*GP*TP*GP*TP*AP*TP*AP*TP*AP*TP*AP*CP*AP*CP*AP*TP*AP*TP*AP*TP*A)-3')
F: DNA (5'-D(P*AP*TP*AP*TP*AP*TP*GP*TP*GP*TP*AP*TP*AP*TP*AP*TP*AP*CP*AP*CP*AP*CP*AP*T)-3')
hetero molecules


Theoretical massNumber of molelcules
Total (without water)291,07410
Polymers290,9776
Non-polymers974
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein DNA topoisomerase medium subunit / DNA topoisomerase 51-kDa subunit / Protein Gp52


Mass: 51951.973 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia phage T4 (virus) / Gene: 52 / Production host: Escherichia coli (E. coli)
References: UniProt: P07065, DNA topoisomerase (ATP-hydrolysing)
#2: Protein phage T4 topoisomerase II gp39-gp60 subunit


Mass: 77524.703 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia phage T4 (virus) / Production host: Escherichia coli (E. coli)
#3: DNA chain DNA (5'-D(P*TP*GP*TP*GP*TP*GP*TP*AP*TP*AP*TP*AP*TP*AP*CP*AP*CP*AP*TP*AP*TP*AP*TP*A)-3')


Mass: 16058.391 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) DNA molecule (others)
#4: DNA chain DNA (5'-D(P*AP*TP*AP*TP*AP*TP*GP*TP*GP*TP*AP*TP*AP*TP*AP*TP*AP*CP*AP*CP*AP*CP*AP*T)-3')


Mass: 15965.361 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) DNA molecule (others)
#5: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY

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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: Phage T4 topoisomerase II central domian bound with G-segment DNA
Type: COMPLEX / Entity ID: #1-#4 / Source: RECOMBINANT
Source (natural)Organism: Escherichia phage T4 (virus)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 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: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 60 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 QUANTUM (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING ONLY
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 269648 / Symmetry type: POINT

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