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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-10446 | ||||||||||||
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Title | SAGA-TBP filtered to show the position of the DUB domain | ||||||||||||
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![]() | Transcriptional co-activator / Histone-acetylation / TRANSCRIPTION | ||||||||||||
Function / homology | ![]() SAGA-type complex / RITS complex assembly / DUBm complex / regulation of primary metabolic process / positive regulation of DNA-templated transcription initiation / TFIIA-class transcription factor complex binding / RNA polymerase III transcription regulatory region sequence-specific DNA binding / regulatory ncRNA-mediated heterochromatin formation / RNA polymerase III preinitiation complex assembly / transcription factor TFIIIB complex ...SAGA-type complex / RITS complex assembly / DUBm complex / regulation of primary metabolic process / positive regulation of DNA-templated transcription initiation / TFIIA-class transcription factor complex binding / RNA polymerase III transcription regulatory region sequence-specific DNA binding / regulatory ncRNA-mediated heterochromatin formation / RNA polymerase III preinitiation complex assembly / transcription factor TFIIIB complex / transcription export complex 2 / nuclear mRNA surveillance / post-transcriptional tethering of RNA polymerase II gene DNA at nuclear periphery / RNA polymerase I general transcription initiation factor binding / regulation of transcription by RNA polymerase III / SLIK (SAGA-like) complex / transcription factor TFIIA complex / RNA polymerase I preinitiation complex assembly / hypothalamus gonadotrophin-releasing hormone neuron development / SAGA complex / DNA binding, bending / female meiosis I / positive regulation of protein monoubiquitination / mitochondrion transport along microtubule / fat pad development / RNA Polymerase III Transcription Initiation From Type 2 Promoter / poly(A)+ mRNA export from nucleus / RNA polymerase II transcribes snRNA genes / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Initiation And Promoter Clearance / RNA polymerase II general transcription initiation factor activity / RNA Polymerase II Pre-transcription Events / transcription factor TFIID complex / NuA4 histone acetyltransferase complex / female gonad development / seminiferous tubule development / RNA Polymerase I Promoter Escape / male meiosis I / nucleolar large rRNA transcription by RNA polymerase I / Estrogen-dependent gene expression / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / protein deubiquitination / nuclear pore / RNA polymerase II core promoter sequence-specific DNA binding / RNA polymerase II preinitiation complex assembly / regulation of proteasomal protein catabolic process / energy homeostasis / regulation of neuron apoptotic process / Maturation of protein E / Maturation of protein E / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants / Prevention of phagosomal-lysosomal fusion / IRAK2 mediated activation of TAK1 complex / Alpha-protein kinase 1 signaling pathway / TBP-class protein binding / Glycogen synthesis / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / Membrane binding and targetting of GAG proteins / Endosomal Sorting Complex Required For Transport (ESCRT) / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / Negative regulation of FLT3 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / Constitutive Signaling by NOTCH1 HD Domain Mutants / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / NOTCH2 Activation and Transmission of Signal to the Nucleus / TICAM1,TRAF6-dependent induction of TAK1 complex / TICAM1-dependent activation of IRF3/IRF7 / APC/C:Cdc20 mediated degradation of Cyclin B / Regulation of FZD by ubiquitination / Downregulation of ERBB4 signaling / p75NTR recruits signalling complexes / APC-Cdc20 mediated degradation of Nek2A / Regulation of innate immune responses to cytosolic DNA / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / InlA-mediated entry of Listeria monocytogenes into host cells / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Regulation of pyruvate metabolism / enzyme activator activity / NF-kB is activated and signals survival / Downregulation of ERBB2:ERBB3 signaling / Pexophagy / NRIF signals cell death from the nucleus / VLDLR internalisation and degradation / Regulation of PTEN localization / Activated NOTCH1 Transmits Signal to the Nucleus / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / Regulation of BACH1 activity / neuron projection morphogenesis / TICAM1, RIP1-mediated IKK complex recruitment / MAP3K8 (TPL2)-dependent MAPK1/3 activation / Translesion synthesis by REV1 / Translesion synthesis by POLK / Downregulation of TGF-beta receptor signaling / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() ![]() | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 20.0 Å | ||||||||||||
![]() | Papai G / Frechard A | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Structure of SAGA and mechanism of TBP deposition on gene promoters. Authors: Gabor Papai / Alexandre Frechard / Olga Kolesnikova / Corinne Crucifix / Patrick Schultz / Adam Ben-Shem / ![]() Abstract: SAGA (Spt-Ada-Gcn5-acetyltransferase) is a 19-subunit complex that stimulates transcription via two chromatin-modifying enzymatic modules and by delivering the TATA box binding protein (TBP) to ...SAGA (Spt-Ada-Gcn5-acetyltransferase) is a 19-subunit complex that stimulates transcription via two chromatin-modifying enzymatic modules and by delivering the TATA box binding protein (TBP) to nucleate the pre-initiation complex on DNA, a pivotal event in the expression of protein-encoding genes. Here we present the structure of yeast SAGA with bound TBP. The core of the complex is resolved at 3.5 Å resolution (0.143 Fourier shell correlation). The structure reveals the intricate network of interactions that coordinate the different functional domains of SAGA and resolves an octamer of histone-fold domains at the core of SAGA. This deformed octamer deviates considerably from the symmetrical analogue in the nucleosome and is precisely tuned to establish a peripheral site for TBP, where steric hindrance represses binding of spurious DNA. Complementary biochemical analysis points to a mechanism for TBP delivery and release from SAGA that requires transcription factor IIA and whose efficiency correlates with the affinity of DNA to TBP. We provide the foundations for understanding the specific delivery of TBP to gene promoters and the multiple roles of SAGA in regulating gene expression. | ||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 53.2 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 45.9 KB 45.9 KB | Display Display | ![]() |
Images | ![]() | 82.5 KB | ||
Filedesc metadata | ![]() | 13.9 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 381.9 KB | Display | ![]() |
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Full document | ![]() | 381.5 KB | Display | |
Data in XML | ![]() | 6.2 KB | Display | |
Data in CIF | ![]() | 7.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6tbmMC ![]() 6tb4C C: citing same article ( M: atomic model generated by this map |
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Similar structure data |
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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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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 2.18 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
+Entire : SAGA bound to TBP
+Supramolecule #1: SAGA bound to TBP
+Supramolecule #2: TATA-box binding protein (TBP)
+Supramolecule #3: SAGA component
+Supramolecule #4: Polyubiquitin-B
+Supramolecule #5: SAGA complex
+Macromolecule #1: TATA-box Binding Protein (TBP)
+Macromolecule #2: Transcriptional coactivator HFI1/ADA1
+Macromolecule #3: Subunit of SAGA histone acetyltransferase complex
+Macromolecule #4: Spt20
+Macromolecule #5: Subunit of the SAGA and SAGA-like transcriptional regulatory comp...
+Macromolecule #6: Subunit of the SAGA transcriptional regulatory complex, involved ...
+Macromolecule #7: Transcription initiation factor TFIID subunit 10
+Macromolecule #8: Subunit (61/68 kDa) of TFIID and SAGA complexes
+Macromolecule #9: Subunit (90 kDa) of TFIID and SAGA complexes
+Macromolecule #10: Subunit (60 kDa) of TFIID and SAGA complexes
+Macromolecule #11: Subunit (17 kDa) of TFIID and SAGA complexes, involved in RNA pol...
+Macromolecule #12: Transcription-associated protein
+Macromolecule #13: Transcriptional regulator involved in glucose repression of Gal4p...
+Macromolecule #14: Spt8
+Macromolecule #15: Polyubiquitin-B
+Macromolecule #16: Ubiquitin carboxyl-terminal hydrolase
+Macromolecule #17: SAGA-associated factor 11
+Macromolecule #18: Transcription and mRNA export factor SUS1
+Macromolecule #19: water
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.4 mg/mL |
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Buffer | pH: 8 |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 283 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Specialist optics | Energy filter - Name: GIF Quantum LS / Energy filter - Slit width: 20 eV |
Image recording | Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average exposure time: 8.0 sec. / Average electron dose: 52.8 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 70.0 µm / Calibrated defocus max: 4.5 µm / Calibrated defocus min: 0.8 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 0.01 mm / Nominal defocus max: 3.5 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 105000 |
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
Refinement | Protocol: OTHER |
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Output model | ![]() PDB-6tbm: |