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Basic information
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Title | Composite map of PIC_delta_TFIIK form2 | |||||||||
![]() | composite map of PIC_delta_TFIIK form2 | |||||||||
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![]() | pol II / Transcription | |||||||||
Function / homology | ![]() regulation of mitotic recombination / RNA polymerase II complex recruiting activity / transcription open complex formation at RNA polymerase II promoter / TFIIA-class transcription factor complex binding / regulation of mRNA 3'-end processing / RNA polymerase III transcription regulatory region sequence-specific DNA binding / phosphatidylinositol-5-phosphate binding / RNA polymerase III preinitiation complex assembly / RNA polymerase II promoter clearance / transcription factor TFIIIB complex ...regulation of mitotic recombination / RNA polymerase II complex recruiting activity / transcription open complex formation at RNA polymerase II promoter / TFIIA-class transcription factor complex binding / regulation of mRNA 3'-end processing / RNA polymerase III transcription regulatory region sequence-specific DNA binding / phosphatidylinositol-5-phosphate binding / RNA polymerase III preinitiation complex assembly / RNA polymerase II promoter clearance / transcription factor TFIIIB complex / positive regulation of mitotic recombination / nucleotide-excision repair factor 3 complex / RNA polymerase I general transcription initiation factor binding / transcription factor TFIIE complex / nucleotide-excision repair, preincision complex assembly / DNA translocase activity / regulation of transcription by RNA polymerase III / TFIIF-class transcription factor complex binding / transcriptional start site selection at RNA polymerase II promoter / RPB4-RPB7 complex / transcription factor TFIIF complex / DNA 5'-3' helicase / phosphatidylinositol-3-phosphate binding / transcription factor TFIIA complex / RNA polymerase I preinitiation complex assembly / transcription factor TFIIH core complex / transcription factor TFIIH holo complex / nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / DNA binding, bending / RNA Polymerase I Transcription Initiation / transcription preinitiation complex / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / poly(A)+ mRNA export from nucleus / RNA Pol II CTD phosphorylation and interaction with CE / DNA 3'-5' helicase / Formation of the Early Elongation Complex / mRNA Capping / RNA polymerase II transcribes snRNA genes / termination of RNA polymerase II transcription / TP53 Regulates Transcription of DNA Repair 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 / termination of RNA polymerase III transcription / RNA polymerase II general transcription initiation factor activity / transcription factor TFIID complex / RNA Polymerase II Pre-transcription Events / RNA-templated transcription / 3'-5' DNA helicase activity / positive regulation of nuclear-transcribed mRNA poly(A) tail shortening / Formation of TC-NER Pre-Incision Complex / transcription initiation at RNA polymerase III promoter / RNA Polymerase I Promoter Escape / termination of RNA polymerase I transcription / nucleolar large rRNA transcription by RNA polymerase I / Gap-filling DNA repair synthesis and ligation in TC-NER / transcription initiation at RNA polymerase I promoter / ATPase activator activity / RNA polymerase II complex binding / Estrogen-dependent gene expression / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / nuclear-transcribed mRNA catabolic process / positive regulation of translational initiation / transcription by RNA polymerase III / protein phosphatase activator activity / Dual incision in TC-NER / positive regulation of RNA polymerase II transcription preinitiation complex assembly / ATP-dependent activity, acting on DNA / positive regulation of transcription initiation by RNA polymerase II / translesion synthesis / RNA polymerase I complex / transcription elongation by RNA polymerase I / RNA polymerase III complex / RNA polymerase II core promoter sequence-specific DNA binding / RNA polymerase II, core complex / tRNA transcription by RNA polymerase III / RNA polymerase II preinitiation complex assembly / transcription by RNA polymerase I / translation initiation factor binding / transcription-coupled nucleotide-excision repair / DNA helicase activity / TBP-class protein binding / nucleotide-excision repair / transcription antitermination / transcription coregulator activity / RNA polymerase II transcription regulatory region sequence-specific DNA binding / transcription initiation at RNA polymerase II promoter / transcription elongation by RNA polymerase II / DNA-templated transcription initiation / P-body / positive regulation of transcription elongation by RNA polymerase II / ribonucleoside binding / mRNA processing / DNA-directed RNA polymerase / cytoplasmic stress granule / disordered domain specific binding / DNA-directed RNA polymerase activity / ubiquitin protein ligase activity Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.8 Å | |||||||||
![]() | Yang C / Murakami K | |||||||||
Funding support | 1 items
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![]() | ![]() Title: Transcription start site scanning requires the fungi-specific hydrophobic loop of Tfb3. Authors: Chun Yang / Pratik Basnet / Samah Sharmin / Hui Shen / Craig D Kaplan / Kenji Murakami / ![]() ![]() Abstract: RNA polymerase II (pol II) initiates transcription from transcription start sites (TSSs) located ∼30-35 bp downstream of the TATA box in metazoans, whereas in the yeast Saccharomyces cerevisiae, ...RNA polymerase II (pol II) initiates transcription from transcription start sites (TSSs) located ∼30-35 bp downstream of the TATA box in metazoans, whereas in the yeast Saccharomyces cerevisiae, pol II scans further downstream TSSs located ∼40-120 bp downstream of the TATA box. Previously, we found that removal of the kinase module TFIIK (Kin28-Ccl1-Tfb3) from TFIIH shifts the TSS in a yeast in vitro system upstream to the location observed in metazoans and that addition of recombinant Tfb3 back to TFIIH-ΔTFIIK restores the downstream TSS usage. Here, we report that this biochemical activity of yeast TFIIK in TSS scanning is attributable to the Tfb3 RING domain at the interface with pol II in the pre-initiation complex (PIC): especially, swapping Tfb3 Pro51-a residue conserved among all fungi-with Ala or Ser as in MAT1, the metazoan homolog of Tfb3, confers an upstream TSS shift in vitro in a similar manner to the removal of TFIIK. Yeast genetic analysis suggests that both Pro51 and Arg64 of Tfb3 are required to maintain the stability of the Tfb3-pol II interface in the PIC. Cryo-electron microscopy analysis of a yeast PIC lacking TFIIK reveals considerable variability in the orientation of TFIIH, which impairs TSS scanning after promoter opening. | |||||||||
History |
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Structure visualization
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Downloads & links
-EMDB archive
Map data | ![]() | 14.3 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 52.8 KB 52.8 KB | Display Display | ![]() |
Images | ![]() | 102.4 KB | ||
Filedesc metadata | ![]() | 15.1 KB | ||
Others | ![]() | 169.6 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 378.1 KB | Display | ![]() |
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Full document | ![]() | 377.8 KB | Display | |
Data in XML | ![]() | 6.9 KB | Display | |
Data in CIF | ![]() | 8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8uoqMC ![]() 8uotC M: atomic model generated by this map C: citing same article ( |
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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
File | ![]() | ||||||||||||||||||||
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Annotation | composite map of PIC_delta_TFIIK form2 | ||||||||||||||||||||
Voxel size | X=Y=Z: 1.08 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
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Sample components
+Entire : composite map of PIC_deltaTFIIK form 2
+Supramolecule #1: composite map of PIC_deltaTFIIK form 2
+Macromolecule #1: Transcription initiation factor IIB
+Macromolecule #2: DNA-directed RNA polymerase II subunit RPB1
+Macromolecule #3: DNA-directed RNA polymerase II subunit RPB2
+Macromolecule #4: DNA-directed RNA polymerase II subunit RPB3
+Macromolecule #5: DNA-directed RNA polymerases I, II, and III subunit RPABC1
+Macromolecule #6: DNA-directed RNA polymerases I, II, and III subunit RPABC2
+Macromolecule #7: DNA-directed RNA polymerases I, II, and III subunit RPABC3
+Macromolecule #8: DNA-directed RNA polymerase II subunit RPB9
+Macromolecule #9: DNA-directed RNA polymerases I, II, and III subunit RPABC5
+Macromolecule #10: DNA-directed RNA polymerase II subunit RPB11
+Macromolecule #11: DNA-directed RNA polymerases I, II, and III subunit RPABC4
+Macromolecule #12: Transcription initiation factor IIF subunit alpha
+Macromolecule #13: Transcription initiation factor IIF subunit beta
+Macromolecule #14: Transcription elongation factor S-II
+Macromolecule #15: TATA-box-binding protein
+Macromolecule #16: Transcription initiation factor IIA large subunit
+Macromolecule #17: Transcription initiation factor IIA subunit 2
+Macromolecule #18: Transcription initiation factor IIE subunit alpha
+Macromolecule #19: Transcription initiation factor IIE subunit beta
+Macromolecule #20: DNA-directed RNA polymerase II subunit RPB4
+Macromolecule #21: DNA-directed RNA polymerase II subunit RPB7
+Macromolecule #22: General transcription and DNA repair factor IIH helicase subunit ...
+Macromolecule #23: General transcription and DNA repair factor IIH subunit TFB1
+Macromolecule #24: General transcription and DNA repair factor IIH subunit TFB4
+Macromolecule #25: General transcription and DNA repair factor IIH subunit SSL1
+Macromolecule #26: General transcription and DNA repair factor IIH helicase subunit XPB
+Macromolecule #27: General transcription and DNA repair factor IIH subunit TFB2
+Macromolecule #28: General transcription and DNA repair factor IIH subunit TFB5
+Macromolecule #29: non-template strand
+Macromolecule #30: template strand
+Macromolecule #31: ZINC ION
+Macromolecule #32: MAGNESIUM ION
+Macromolecule #33: IRON/SULFUR CLUSTER
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 1 mg/mL |
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Buffer | pH: 7.6 |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 1.25 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 100.0 µm / Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 1.75 µm / Nominal defocus min: 0.75 µm / Nominal magnification: 81000 |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |