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- EMDB-12737: Cooperation between the intrinsically disordered and ordered regi... -
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Open data
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Basic information
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Title | Cooperation between the intrinsically disordered and ordered regions of Spt6 regulates nucleosome and Pol II CTD binding, and nucleosome assembly | |||||||||||||||||||||
![]() | EM sharpened map of Spt6 | |||||||||||||||||||||
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Function / homology | ![]() carbon catabolite repression of transcription from RNA polymerase II promoter by glucose / regulation of transcriptional start site selection at RNA polymerase II promoter / transcription antitermination factor activity, DNA binding / regulation of mRNA 3'-end processing / nucleosome organization / poly(A)+ mRNA export from nucleus / transcription elongation-coupled chromatin remodeling / nucleosome binding / positive regulation of transcription elongation by RNA polymerase II / transcription elongation factor complex ...carbon catabolite repression of transcription from RNA polymerase II promoter by glucose / regulation of transcriptional start site selection at RNA polymerase II promoter / transcription antitermination factor activity, DNA binding / regulation of mRNA 3'-end processing / nucleosome organization / poly(A)+ mRNA export from nucleus / transcription elongation-coupled chromatin remodeling / nucleosome binding / positive regulation of transcription elongation by RNA polymerase II / transcription elongation factor complex / transcription antitermination / transcription elongation by RNA polymerase II / euchromatin / G1/S transition of mitotic cell cycle / nucleosome assembly / chromatin organization / histone binding / chromatin remodeling / regulation of transcription by RNA polymerase II / negative regulation of transcription by RNA polymerase II / positive regulation of transcription by RNA polymerase II / mitochondrion / DNA binding / nucleus Similarity search - Function | |||||||||||||||||||||
Biological species | ![]() ![]() | |||||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.88 Å | |||||||||||||||||||||
![]() | Kasiliauskaite A / Kubicek K / Klumpler T / Zanova M / Zapletal D / Novacek J / Stefl R | |||||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Cooperation between intrinsically disordered and ordered regions of Spt6 regulates nucleosome and Pol II CTD binding, and nucleosome assembly. Authors: Aiste Kasiliauskaite / Karel Kubicek / Tomas Klumpler / Martina Zanova / David Zapletal / Eliska Koutna / Jiri Novacek / Richard Stefl / ![]() Abstract: Transcription elongation factor Spt6 associates with RNA polymerase II (Pol II) and acts as a histone chaperone, which promotes the reassembly of nucleosomes following the passage of Pol II. The ...Transcription elongation factor Spt6 associates with RNA polymerase II (Pol II) and acts as a histone chaperone, which promotes the reassembly of nucleosomes following the passage of Pol II. The precise mechanism of nucleosome reassembly mediated by Spt6 remains unclear. In this study, we used a hybrid approach combining cryo-electron microscopy and small-angle X-ray scattering to visualize the architecture of Spt6 from Saccharomyces cerevisiae. The reconstructed overall architecture of Spt6 reveals not only the core of Spt6, but also its flexible N- and C-termini, which are critical for Spt6's function. We found that the acidic N-terminal region of Spt6 prevents the binding of Spt6 not only to the Pol II CTD and Pol II CTD-linker, but also to pre-formed intact nucleosomes and nucleosomal DNA. The N-terminal region of Spt6 self-associates with the tSH2 domain and the core of Spt6 and thus controls binding to Pol II and nucleosomes. Furthermore, we found that Spt6 promotes the assembly of nucleosomes in vitro. These data indicate that the cooperation between the intrinsically disordered and structured regions of Spt6 regulates nucleosome and Pol II CTD binding, and also nucleosome assembly. | |||||||||||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 32.7 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 22.2 KB 22.2 KB | Display Display | ![]() |
Images | ![]() | 89 KB | ||
Others | ![]() ![]() | 59.5 MB 59.5 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7o6bMC ![]() 7o3dC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | EM sharpened map of Spt6 | ||||||||||||||||||||
Voxel size | X=Y=Z: 0.828 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: EM half map of Spt6
File | emd_12737_half_map_1.map | ||||||||||||
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Annotation | EM half map of Spt6 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: EM half map of Spt6
File | emd_12737_half_map_2.map | ||||||||||||
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Annotation | EM half map of Spt6 | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Structure of elongation factor Spt6
Entire | Name: Structure of elongation factor Spt6 |
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Components |
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-Supramolecule #1: Structure of elongation factor Spt6
Supramolecule | Name: Structure of elongation factor Spt6 / type: organelle_or_cellular_component / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() ![]() |
Recombinant expression | Organism: ![]() ![]() |
-Macromolecule #1: Transcription elongation factor SPT6
Macromolecule | Name: Transcription elongation factor SPT6 / type: protein_or_peptide / ID: 1 Details: the sequence stretches of the sample that do not make part of the coordinates are flexible regions that were not observed in the cryoEM map Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() Strain: ATCC 204508 / S288c |
Molecular weight | Theoretical: 134.923031 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GIDPFTDIYD LEDLKKNLMT EGDMKIRKTD IPERYQELRA GITDYGNMSS EDQELERNWI AEKISVDKNF DANYDLTEFK EAIGNAIKF ITKENLEVPF IYAYRRNYIS SREKDGFLLT EDDLWDIVSL DIEFHSLVNK KDYVQRFYAE LHIDDPIVTE Y FKNQNTAS ...String: GIDPFTDIYD LEDLKKNLMT EGDMKIRKTD IPERYQELRA GITDYGNMSS EDQELERNWI AEKISVDKNF DANYDLTEFK EAIGNAIKF ITKENLEVPF IYAYRRNYIS SREKDGFLLT EDDLWDIVSL DIEFHSLVNK KDYVQRFYAE LHIDDPIVTE Y FKNQNTAS IAELNSLQDI YDYLEFKYAN EINEMFINHT GKTGKKHLKN SSYEKFKASP LYQAVSDIGI SAEDVGENIS SQ HQIHPPV DHPSSKPVEV IESILNANSG DLQVFTSNTK LAIDTVQKYY SLELSKNTKI REKVRSDFSK YYLADVVLTA KGK KEIQKG SLYEDIKYAI NRTPMHFRRD PDVFLKMVEA ESLNLLSVKL HMSSQAQYIE HLFQIALETT NTSDIAIEWN NFRK LAFNQ AMDKIFQDIS QEVKDNLTKN CQKLVAKTVR HKFMTKLDQA PFIPNVRDPK IPKILSLTCG QGRFGADAII AVYVN RKGD FIRDYKIVDN PFDKTNPEKF EDTLDNIIQS CQPNAIGING PNPKTQKFYK RLQEVLHKKQ IVDSRGHTIP IIYVED EVA IRYQNSERAA QEFPNKPPLV KYCIALARYM HSPLLEYANL TSEEVRSLSI HPHQNLLSSE QLSWALETAF VDIVNLV SV EVNKATDNNY YASALKYISG FGKRKAIDFL QSLQRLNEPL LARQQLITHN ILHKTIFMNS AGFLYISWNE KRQKYEDL E HDQLDSTRIH PEDYHLATKV AADALEYDPD TIAEKEEQGT MSEFIELLRE DPDRRAKLES LNLESYAEEL EKNTGLRKL NNLNTIVLEL LDGFEELRND FHPLQGDEIF QSLTGESEKT FFKGSIIPVR VERFWHNDII CTTNSEVECV VNAQRHAGAQ LRRPANEIY EIGKTYPAKV IYIDYANITA EVSLLDHDVK QQYVPISYSK DPSIWDLKQE LEDAEEERKL MMAEARAKRT H RVINHPYY FPFNGRQAED YLRSKERGEF VIRQSSRGDD HLVITWKLDK DLFQHIDIQE LEKENPLALG KVLIVDNQKY ND LDQIIVE YLQNKVRLLN EMTSSEKFKS GTKKDVVKFI EDYSRVNPNK SVYYFSLNHD NPGWFYLMFK INANSKLYTW NVK LTNTGY FLVNYNYPSV IQLCNGFKTL LKSNSSKNRM NNYR |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.15 mg/mL |
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Buffer | pH: 7.5 / Component - Concentration: 20.0 mM / Component - Formula: HEPES / Component - Name: HEPES |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
Details | homogeneous monodisperse sample |
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Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Digitization - Dimensions - Width: 3840 pixel / Digitization - Dimensions - Height: 3710 pixel / Digitization - Frames/image: 1-40 / Number grids imaged: 1 / Number real images: 13807 / Average exposure time: 5.0 sec. / Average electron dose: 55.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 30.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Initial model |
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Refinement | Space: REAL / Protocol: FLEXIBLE FIT / Target criteria: Correlation coefficients | ||||||
Output model | ![]() PDB-7o6b: |