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- PDB-7yq8: Cryo-EM structure of human topoisomerase II beta in complex with ... -

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Basic information

Entry
Database: PDB / ID: 7yq8
TitleCryo-EM structure of human topoisomerase II beta in complex with DNA and etoposide
Components
  • (50-mer DNA) x 2
  • DNA topoisomerase 2-beta
KeywordsISOMERASE/DNA / Topoisomerase / Etoposide / DNA / ISOMERASE / ISOMERASE-DNA complex
Function / homology
Function and homology information


positive regulation of single stranded viral RNA replication via double stranded DNA intermediate / sister chromatid segregation / resolution of meiotic recombination intermediates / DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity / DNA topoisomerase (ATP-hydrolysing) / cellular response to ATP / positive regulation of double-strand break repair via nonhomologous end joining / DNA topological change / SUMOylation of DNA replication proteins / ribonucleoprotein complex binding ...positive regulation of single stranded viral RNA replication via double stranded DNA intermediate / sister chromatid segregation / resolution of meiotic recombination intermediates / DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity / DNA topoisomerase (ATP-hydrolysing) / cellular response to ATP / positive regulation of double-strand break repair via nonhomologous end joining / DNA topological change / SUMOylation of DNA replication proteins / ribonucleoprotein complex binding / forebrain development / axonogenesis / B cell differentiation / neuron migration / cellular response to hydrogen peroxide / cellular senescence / ribonucleoprotein complex / chromatin binding / nucleolus / DNA binding / nucleoplasm / ATP binding / metal ion binding / nucleus / cytosol
Similarity search - Function
DTHCT / DTHCT (NUC029) region / DNA topoisomerase 2, TOPRIM domain / DNA topoisomerase II, eukaryotic-type / C-terminal associated domain of TOPRIM / C-terminal associated domain of TOPRIM / 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 ...DTHCT / DTHCT (NUC029) region / DNA topoisomerase 2, TOPRIM domain / DNA topoisomerase II, eukaryotic-type / C-terminal associated domain of TOPRIM / C-terminal associated domain of TOPRIM / 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, subunit B, domain 2 / DNA gyrase B / DNA topoisomerase, type IIA / DNA topoisomerase, type IIA, conserved site / DNA topoisomerase II signature. / TopoisomeraseII / DNA topoisomerase, type IIA, subunit B, C-terminal / Toprim domain / DNA topoisomerase, type IIA-like domain superfamily / Toprim domain profile. / TOPRIM domain / Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase / Histidine kinase/HSP90-like ATPase / Histidine kinase/HSP90-like ATPase superfamily / Ribosomal protein S5 domain 2-type fold, subgroup / Ribosomal protein S5 domain 2-type fold
Similarity search - Domain/homology
Chem-EVP / DNA / DNA (> 10) / DNA topoisomerase 2-beta
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.9 Å
AuthorsNaganuma, M. / Ehara, H. / Kim, D. / Nakagawa, R. / Cong, A. / Bu, H. / Jeong, J. / Jang, J. / Schellenberg, M.J. / Bunch, H. / Sekine, S.
Funding support Japan, 1items
OrganizationGrant numberCountry
Japan Society for the Promotion of Science (JSPS)JP20H05690 Japan
CitationJournal: Nat Commun / Year: 2023
Title: ERK2-topoisomerase II regulatory axis is important for gene activation in immediate early genes.
Authors: Heeyoun Bunch / Deukyeong Kim / Masahiro Naganuma / Reiko Nakagawa / Anh Cong / Jaehyeon Jeong / Haruhiko Ehara / Hongha Vu / Jeong Ho Chang / Matthew J Schellenberg / Shun-Ichi Sekine /
Abstract: The function of the mitogen-activated protein kinase signaling pathway is required for the activation of immediate early genes (IEGs), including EGR1 and FOS, for cell growth and proliferation. ...The function of the mitogen-activated protein kinase signaling pathway is required for the activation of immediate early genes (IEGs), including EGR1 and FOS, for cell growth and proliferation. Recent studies have identified topoisomerase II (TOP2) as one of the important regulators of the transcriptional activation of IEGs. However, the mechanism underlying transcriptional regulation involving TOP2 in IEG activation has remained unknown. Here, we demonstrate that ERK2, but not ERK1, is important for IEG transcriptional activation and report a critical ELK1 binding sequence for ERK2 function at the EGR1 gene. Our data indicate that both ERK1 and ERK2 extensively phosphorylate the C-terminal domain of TOP2B at mutual and distinctive residues. Although both ERK1 and ERK2 enhance the catalytic rate of TOP2B required to relax positive DNA supercoiling, ERK2 delays TOP2B catalysis of negative DNA supercoiling. In addition, ERK1 may relax DNA supercoiling by itself. ERK2 catalytic inhibition or knock-down interferes with transcription and deregulates TOP2B in IEGs. Furthermore, we present the first cryo-EM structure of the human cell-purified TOP2B and etoposide together with the EGR1 transcriptional start site (-30 to +20) that has the strongest affinity to TOP2B within -423 to +332. The structure shows TOP2B-mediated breakage and dramatic bending of the DNA. Transcription is activated by etoposide, while it is inhibited by ICRF193 at EGR1 and FOS, suggesting that TOP2B-mediated DNA break to favor transcriptional activation. Taken together, this study suggests that activated ERK2 phosphorylates TOP2B to regulate TOP2-DNA interactions and favor transcriptional activation in IEGs. We propose that TOP2B association, catalysis, and dissociation on its substrate DNA are important processes for regulating transcription and that ERK2-mediated TOP2B phosphorylation may be key for the catalysis and dissociation steps.
History
DepositionAug 5, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jan 3, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: DNA topoisomerase 2-beta
B: DNA topoisomerase 2-beta
C: 50-mer DNA
D: 50-mer DNA
E: 50-mer DNA
F: 50-mer DNA
hetero molecules


Theoretical massNumber of molelcules
Total (without water)429,94010
Polymers428,7146
Non-polymers1,2264
Water0
1


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

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Components

#1: Protein DNA topoisomerase 2-beta / DNA topoisomerase II / beta isozyme


Mass: 183542.250 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: TOP2B / Production host: Homo sapiens (human)
References: UniProt: Q02880, DNA topoisomerase (ATP-hydrolysing)
#2: DNA chain 50-mer DNA


Mass: 15449.866 Da / Num. of mol.: 2 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)
#3: DNA chain 50-mer DNA


Mass: 15364.773 Da / Num. of mol.: 2 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)
#4: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
#5: Chemical ChemComp-EVP / (5S,5aR,8aR,9R)-9-(4-hydroxy-3,5-dimethoxyphenyl)-8-oxo-5,5a,6,8,8a,9-hexahydrofuro[3',4':6,7]naphtho[2,3-d][1,3]dioxol -5-yl 4,6-O-[(1R)-ethylidene]-beta-D-glucopyranoside / Etoposide / VP-16 / Etoposide


Mass: 588.557 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C29H32O13 / Feature type: SUBJECT OF INVESTIGATION / Comment: medication, chemotherapy*YM
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

Component
IDNameTypeEntity IDParent-IDSource
1Ternary complex of human topoisomerase II beta with DNA and etoposideCOMPLEX#1-#30MULTIPLE SOURCES
2human topoisomerase II betaCOMPLEX#11RECOMBINANT
3DNACOMPLEX#2-#31SYNTHETIC
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 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: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 49 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.19.2_4158: / Classification: refinement
CTF correctionType: NONE
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 26067 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00313420
ELECTRON MICROSCOPYf_angle_d0.57518342
ELECTRON MICROSCOPYf_dihedral_angle_d16.8892154
ELECTRON MICROSCOPYf_chiral_restr0.0412008
ELECTRON MICROSCOPYf_plane_restr0.0032146

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