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- PDB-6t7b: Structure of human Sox2 transcription factor in complex with a nu... -

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Basic information

Entry
Database: PDB / ID: 6t7b
TitleStructure of human Sox2 transcription factor in complex with a nucleosome
Components
  • (DNA (147-MER)) x 2
  • Histone H2A type 1-B/E
  • Histone H2B type 1-K
  • Histone H3.2
  • Histone H4
  • Transcription factor SOX-2
KeywordsNUCLEAR PROTEIN / Nucleosome / DNA / histones / Sox2 / transcription factor / pioneer factor
Function / homology
Function and homology information


glial cell fate commitment / regulation of myofibroblast cell apoptotic process / Formation of the posterior neural plate / POU5F1 (OCT4), SOX2, NANOG repress genes related to differentiation / Formation of the anterior neural plate / response to oxygen-glucose deprivation / endodermal cell fate specification / adenohypophysis development / negative regulation of cell cycle G1/S phase transition / POU5F1 (OCT4), SOX2, NANOG activate genes related to proliferation ...glial cell fate commitment / regulation of myofibroblast cell apoptotic process / Formation of the posterior neural plate / POU5F1 (OCT4), SOX2, NANOG repress genes related to differentiation / Formation of the anterior neural plate / response to oxygen-glucose deprivation / endodermal cell fate specification / adenohypophysis development / negative regulation of cell cycle G1/S phase transition / POU5F1 (OCT4), SOX2, NANOG activate genes related to proliferation / Specification of the neural plate border / pituitary gland development / Regulation of MITF-M-dependent genes involved in extracellular matrix, focal adhesion and epithelial-to-mesenchymal transition / positive regulation of cell-cell adhesion / tissue regeneration / Transcriptional Regulation by MECP2 / Transcriptional regulation of pluripotent stem cells / eye development / neuronal stem cell population maintenance / Germ layer formation at gastrulation / response to growth factor / miRNA binding / inner ear development / somatic stem cell population maintenance / negative regulation of neuron differentiation / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / forebrain development / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Deposition of new CENPA-containing nucleosomes at the centromere / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / telomere organization / Transcriptional and post-translational regulation of MITF-M expression and activity / Inhibition of DNA recombination at telomere / Meiotic synapsis / Interleukin-7 signaling / RNA Polymerase I Promoter Opening / Assembly of the ORC complex at the origin of replication / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / SUMOylation of chromatin organization proteins / DNA methylation / Condensation of Prophase Chromosomes / Chromatin modifications during the maternal to zygotic transition (MZT) / HCMV Late Events / SIRT1 negatively regulates rRNA expression / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / chloroplast / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / positive regulation of cell differentiation / HDACs deacetylate histones / Nonhomologous End-Joining (NHEJ) / RNA Polymerase I Promoter Escape / Deactivation of the beta-catenin transactivating complex / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / negative regulation of canonical Wnt signaling pathway / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / G2/M DNA damage checkpoint / HDMs demethylate histones / brain development / NoRC negatively regulates rRNA expression / DNA Damage/Telomere Stress Induced Senescence / B-WICH complex positively regulates rRNA expression / PKMTs methylate histone lysines / Meiotic recombination / Pre-NOTCH Transcription and Translation / response to wounding / Metalloprotease DUBs / RMTs methylate histone arginines / Activation of anterior HOX genes in hindbrain development during early embryogenesis / Transcriptional regulation of granulopoiesis / HCMV Early Events / neuron differentiation / osteoblast differentiation / structural constituent of chromatin / UCH proteinases / nucleosome / heterochromatin formation / nucleosome assembly / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / chromatin organization / HATs acetylate histones / RUNX1 regulates transcription of genes involved in differentiation of HSCs / Factors involved in megakaryocyte development and platelet production / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / Processing of DNA double-strand break ends / regulation of gene expression / DNA-binding transcription activator activity, RNA polymerase II-specific / Senescence-Associated Secretory Phenotype (SASP) / small ribosomal subunit rRNA binding
Similarity search - Function
Transcription factor SOX / SOX transcription factor / : / HMG (high mobility group) box / HMG boxes A and B DNA-binding domains profile. / high mobility group / High mobility group box domain / High mobility group box domain superfamily / Histone H2A conserved site / Histone H2A signature. ...Transcription factor SOX / SOX transcription factor / : / HMG (high mobility group) box / HMG boxes A and B DNA-binding domains profile. / high mobility group / High mobility group box domain / High mobility group box domain superfamily / Histone H2A conserved site / Histone H2A signature. / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone H2A / Histone 2A / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / Histone H3 signature 1. / Ribosomal protein S6, plastid/chloroplast / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Ribosomal protein S6 / Ribosomal protein S6 / Ribosomal protein S6 superfamily / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 / Translation elongation factor EF1B/ribosomal protein S6 / Histone-fold
Similarity search - Domain/homology
DNA / DNA (> 10) / DNA (> 100) / Small ribosomal subunit protein bS6c alpha / Histone H2A type 1-B/E / Transcription factor SOX-2 / Histone H4 / Histone H3.2
Similarity search - Component
Biological speciesHomo sapiens (human)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 5.1 Å
AuthorsDodonova, S.O. / Zhu, F. / Dienemann, C. / Taipale, J. / Cramer, P.
Funding support Germany, 3items
OrganizationGrant numberCountry
European Research Council693023 Germany
European Molecular Biology OrganizationALTF-949-2016 Germany
Volkswagen Foundation Germany
CitationJournal: Nature / Year: 2020
Title: Nucleosome-bound SOX2 and SOX11 structures elucidate pioneer factor function.
Authors: Svetlana O Dodonova / Fangjie Zhu / Christian Dienemann / Jussi Taipale / Patrick Cramer /
Abstract: 'Pioneer' transcription factors are required for stem-cell pluripotency, cell differentiation and cell reprogramming. Pioneer factors can bind nucleosomal DNA to enable gene expression from regions ...'Pioneer' transcription factors are required for stem-cell pluripotency, cell differentiation and cell reprogramming. Pioneer factors can bind nucleosomal DNA to enable gene expression from regions of the genome with closed chromatin. SOX2 is a prominent pioneer factor that is essential for pluripotency and self-renewal of embryonic stem cells. Here we report cryo-electron microscopy structures of the DNA-binding domains of SOX2 and its close homologue SOX11 bound to nucleosomes. The structures show that SOX factors can bind and locally distort DNA at superhelical location 2. The factors also facilitate detachment of terminal nucleosomal DNA from the histone octamer, which increases DNA accessibility. SOX-factor binding to the nucleosome can also lead to a repositioning of the N-terminal tail of histone H4 that includes residue lysine 16. We speculate that this repositioning is incompatible with higher-order nucleosome stacking, which involves contacts of the H4 tail with a neighbouring nucleosome. Our results indicate that pioneer transcription factors can use binding energy to initiate chromatin opening, and thereby facilitate nucleosome remodelling and subsequent transcription.
History
DepositionOct 21, 2019Deposition site: PDBE / Processing site: PDBE
Revision 1.0Apr 29, 2020Provider: repository / Type: Initial release
Revision 1.1May 13, 2020Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID
Revision 1.2May 22, 2024Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_3d_fitting_list / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type

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Structure visualization

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Structure viewerMolecule:
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Assembly

Deposited unit
A: Histone H3.2
B: Histone H4
C: Histone H2A type 1-B/E
D: Histone H2B type 1-K
E: Histone H3.2
F: Histone H4
G: Histone H2A type 1-B/E
H: Histone H2B type 1-K
I: DNA (147-MER)
J: DNA (147-MER)
K: Transcription factor SOX-2


Theoretical massNumber of molelcules
Total (without water)216,32711
Polymers216,32711
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: native gel electrophoresis
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 5 types, 9 molecules AEBFCGDHK

#1: Protein Histone H3.2 / Histone H3/m / Histone H3/o


Mass: 15389.036 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: HIST2H3A, HIST2H3C, H3F2, H3FM, HIST2H3D / Plasmid: pET22b / Production host: Escherichia coli (E. coli) / References: UniProt: Q71DI3
#2: Protein Histone H4


Mass: 11394.426 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human)
Gene: HIST1H4A, H4/A, H4FA, HIST1H4B, H4/I, H4FI, HIST1H4C, H4/G, H4FG, HIST1H4D, H4/B, H4FB, HIST1H4E, H4/J, H4FJ, HIST1H4F, H4/C, H4FC, HIST1H4H, H4/H, H4FH, HIST1H4I, H4/M, H4FM, HIST1H4J, H4/E, ...Gene: HIST1H4A, H4/A, H4FA, HIST1H4B, H4/I, H4FI, HIST1H4C, H4/G, H4FG, HIST1H4D, H4/B, H4FB, HIST1H4E, H4/J, H4FJ, HIST1H4F, H4/C, H4FC, HIST1H4H, H4/H, H4FH, HIST1H4I, H4/M, H4FM, HIST1H4J, H4/E, H4FE, HIST1H4K, H4/D, H4FD, HIST1H4L, H4/K, H4FK, HIST2H4A, H4/N, H4F2, H4FN, HIST2H4, HIST2H4B, H4/O, H4FO, HIST4H4
Plasmid: pET3a / Production host: Escherichia coli (E. coli) / References: UniProt: P62805
#3: Protein Histone H2A type 1-B/E / Histone H2A.2 / Histone H2A/a / Histone H2A/m


Mass: 16707.277 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: HIST1H2AB, H2AFM, HIST1H2AE, H2AFA / Plasmid: LIC-1B (MacroLabs) / Production host: Escherichia coli (E. coli) / References: UniProt: P04908
#4: Protein Histone H2B type 1-K / H2B K / HIRA-interacting protein 1


Mass: 13921.213 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: HIST1H2BK, H2BFT, HIRIP1 / Plasmid: pET22b / Production host: Escherichia coli (E. coli) / References: UniProt: O60814
#7: Protein Transcription factor SOX-2


Mass: 10777.620 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SOX2 / Production host: Escherichia coli (E. coli) / References: UniProt: P48431

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DNA chain , 2 types, 2 molecules IJ

#5: DNA chain DNA (147-MER)


Mass: 45240.848 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#6: DNA chain DNA (147-MER)


Mass: 45484.273 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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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
1Structure of human Sox2 transcription factor in complex with a nucleosomeCOMPLEXall0MULTIPLE SOURCES
2Histone H2A type 1, H2B type 1-K, H3.2, H4 and SOX2COMPLEX#1-#4, #71RECOMBINANT
3DNACOMPLEX#5-#61RECOMBINANT
Molecular weight
IDEntity assembly-IDValue (°)Experimental value
110.216 MDaNO
21NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12Homo sapiens (human)9606
23synthetic construct (others)32630
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
12Escherichia coli (E. coli)562
23synthetic construct (others)32630
Details of virusEmpty: NO / Enveloped: NO / Isolate: OTHER / Type: VIRUS-LIKE PARTICLE
Natural hostOrganism: Saccharomyces cerevisiae
Virus shellName: GAG Capsid / Diameter: 480 nm / Triangulation number (T number): 9
Buffer solutionpH: 7.5
Buffer component
IDConc.NameFormulaBuffer-ID
120 mMHEPES1
230 mMNaCl1
31 mMEDTA1
42 mMDTT1
SpecimenConc.: 0.15 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: 0.39 mB pressure, 25 mA / Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R2/1
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 289 K
Details: The sample was applied onto glow-discharged Quantifoil holey carbon grids. The grids were blotted from both sides for 5-10 seconds at 16*C in a chamber at 100% humidity and plunge-frozen ...Details: The sample was applied onto glow-discharged Quantifoil holey carbon grids. The grids were blotted from both sides for 5-10 seconds at 16*C in a chamber at 100% humidity and plunge-frozen into liquid ethane using a manual plunger.

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Details: At least 50% of the data were collected at 25* stage tilt in order to partially compensate for preferred orientation of particles on the grid, and to improve angular distribution.
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 130000 X / Nominal defocus max: 3500 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / C2 aperture diameter: 100 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 1.125 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 30 eV
Image scansMovie frames/image: 40

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Processing

EM software
IDNameCategory
1Gautomatchparticle selection
2EPUimage acquisition
4GctfCTF correction
9PHENIXmodel refinement
10RELIONinitial Euler assignment
11RELIONfinal Euler assignment
12RELIONclassification
13RELION3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 5.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 32301 / Symmetry type: POINT
EM volume selectionDetails: 1733 vesicles and near-complete buds were picked from 61 tomograms. Subtomograms were extracted from the surface of the vesicles.
Num. of tomograms: 54 / Num. of volumes extracted: 2547
Atomic model buildingB value: 100 / Protocol: OTHER / Space: REAL
Atomic model buildingPDB-ID: 6FQ5

6fq5


Accession code: 6FQ5 / Source name: PDB / Type: experimental model

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