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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-11569 | |||||||||
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Title | Human C Complex Spliceosome - High-resolution CORE | |||||||||
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![]() | human C complex / spliceosome / hC / human step 1 spliceosome / SPLICING | |||||||||
Function / homology | ![]() striated muscle dense body / post-spliceosomal complex / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / 3'-5' RNA helicase activity / generation of catalytic spliceosome for first transesterification step / regulation of vitamin D receptor signaling pathway / nuclear retinoic acid receptor binding / embryonic brain development / RNA splicing, via transesterification reactions ...striated muscle dense body / post-spliceosomal complex / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / 3'-5' RNA helicase activity / generation of catalytic spliceosome for first transesterification step / regulation of vitamin D receptor signaling pathway / nuclear retinoic acid receptor binding / embryonic brain development / RNA splicing, via transesterification reactions / mRNA 3'-end processing / sno(s)RNA-containing ribonucleoprotein complex / regulation of mRNA splicing, via spliceosome / C2H2 zinc finger domain binding / U2-type catalytic step 1 spliceosome / positive regulation of mRNA splicing, via spliceosome / pre-mRNA binding / positive regulation by host of viral transcription / U2-type precatalytic spliceosome / U2-type spliceosomal complex / positive regulation of vitamin D receptor signaling pathway / mRNA cis splicing, via spliceosome / Transport of Mature mRNA derived from an Intron-Containing Transcript / nuclear vitamin D receptor binding / Notch binding / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / U2-type catalytic step 2 spliceosome / RUNX3 regulates NOTCH signaling / NOTCH4 Intracellular Domain Regulates Transcription / RNA Polymerase II Transcription Termination / NOTCH3 Intracellular Domain Regulates Transcription / WD40-repeat domain binding / protein peptidyl-prolyl isomerization / positive regulation of neurogenesis / nuclear androgen receptor binding / K63-linked polyubiquitin modification-dependent protein binding / muscle organ development / generation of catalytic spliceosome for second transesterification step / Notch-HLH transcription pathway / Formation of paraxial mesoderm / positive regulation of transforming growth factor beta receptor signaling pathway / SMAD binding / spliceosomal complex assembly / mRNA Splicing - Minor Pathway / negative regulation of DNA damage response, signal transduction by p53 class mediator / mRNA 3'-splice site recognition / spliceosomal tri-snRNP complex assembly / Prp19 complex / U5 snRNA binding / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / protein localization to nucleus / U5 snRNP / positive regulation of G1/S transition of mitotic cell cycle / U2 snRNA binding / U6 snRNA binding / pre-mRNA intronic binding / RNA processing / Cajal body / retinoic acid receptor signaling pathway / U1 snRNA binding / U4/U6 x U5 tri-snRNP complex / cellular response to retinoic acid / catalytic step 2 spliceosome / mRNA Splicing - Major Pathway / RNA splicing / positive regulation of RNA splicing / DNA damage checkpoint signaling / peptidyl-prolyl cis-trans isomerase activity / positive regulation of protein export from nucleus / nuclear receptor binding / RNA polymerase II transcription regulatory region sequence-specific DNA binding / RNA polymerase II CTD heptapeptide repeat P3 isomerase activity / RNA polymerase II CTD heptapeptide repeat P6 isomerase activity / peptidylprolyl isomerase / spliceosomal complex / Downregulation of SMAD2/3:SMAD4 transcriptional activity / response to cocaine / mRNA splicing, via spliceosome / Pre-NOTCH Transcription and Translation / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / NOTCH1 Intracellular Domain Regulates Transcription / Formation of TC-NER Pre-Incision Complex / Z disc / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / histone deacetylase binding / positive regulation of protein import into nucleus / nuclear matrix / fibrillar center / mRNA processing / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / rRNA processing / calcium-dependent protein binding / transcription corepressor activity / actin filament binding / disordered domain specific binding / cellular response to xenobiotic stimulus / cellular response to tumor necrosis factor / protein folding Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.4 Å | |||||||||
![]() | Bertram K / Kastner B | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural Insights into the Roles of Metazoan-Specific Splicing Factors in the Human Step 1 Spliceosome. Authors: Karl Bertram / Leyla El Ayoubi / Olexandr Dybkov / Dmitry E Agafonov / Cindy L Will / Klaus Hartmuth / Henning Urlaub / Berthold Kastner / Holger Stark / Reinhard Lührmann / ![]() Abstract: Human spliceosomes contain numerous proteins absent in yeast, whose functions remain largely unknown. Here we report a 3D cryo-EM structure of the human spliceosomal C complex at 3.4 Å core ...Human spliceosomes contain numerous proteins absent in yeast, whose functions remain largely unknown. Here we report a 3D cryo-EM structure of the human spliceosomal C complex at 3.4 Å core resolution and 4.5-5.7 Å at its periphery, and aided by protein crosslinking we determine its molecular architecture. Our structure provides additional insights into the spliceosome's architecture between the catalytic steps of splicing, and how proteins aid formation of the spliceosome's catalytically active RNP (ribonucleoprotein) conformation. It reveals the spatial organization of the metazoan-specific proteins PPWD1, WDR70, FRG1, and CIR1 in human C complexes, indicating they stabilize functionally important protein domains and RNA structures rearranged/repositioned during the B to C transition. Structural comparisons with human B, C, and P complexes reveal an intricate cascade of RNP rearrangements during splicing catalysis, with intermediate RNP conformations not found in yeast, and additionally elucidate the structural basis for the sequential recruitment of metazoan-specific spliceosomal proteins. | |||||||||
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 | ![]() | 300.6 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 50.4 KB 50.4 KB | Display Display | ![]() |
Images | ![]() | 181.2 KB | ||
Filedesc metadata | ![]() | 16.7 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6zymMC ![]() 7a5pC M: atomic model generated by this map C: citing same article ( |
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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: 1.06 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 : Human C complex Spliceosome - High resolution core
+Supramolecule #1: Human C complex Spliceosome - High resolution core
+Macromolecule #1: U2 snRNA
+Macromolecule #2: U5 snRNA
+Macromolecule #3: U6 snRNA
+Macromolecule #19: pre-mRNA
+Macromolecule #4: Corepressor interacting with RBPJ 1
+Macromolecule #5: Pre-mRNA-processing-splicing factor 8
+Macromolecule #6: 116 kDa U5 small nuclear ribonucleoprotein component
+Macromolecule #7: SNW domain-containing protein 1
+Macromolecule #8: Pleiotropic regulator 1
+Macromolecule #9: Pre-mRNA-processing factor 17
+Macromolecule #10: U5 small nuclear ribonucleoprotein 40 kDa protein
+Macromolecule #11: Cell division cycle 5-like protein
+Macromolecule #12: Crooked neck-like protein 1
+Macromolecule #13: Pre-mRNA-splicing factor RBM22
+Macromolecule #14: Protein BUD31 homolog
+Macromolecule #15: Spliceosome-associated protein CWC15 homolog
+Macromolecule #16: Serine/arginine repetitive matrix protein 2
+Macromolecule #17: Pre-mRNA-splicing factor CWC22 homolog
+Macromolecule #18: Peptidyl-prolyl cis-trans isomerase-like 1
+Macromolecule #20: WD repeat-containing protein 70
+Macromolecule #21: Pre-mRNA-splicing factor ATP-dependent RNA helicase PRP16
+Macromolecule #22: Pre-mRNA-splicing factor ISY1 homolog
+Macromolecule #23: Pre-mRNA-splicing factor CWC25 homolog
+Macromolecule #24: Splicing factor YJU2
+Macromolecule #25: Protein FRG1
+Macromolecule #26: MAGNESIUM ION
+Macromolecule #27: INOSITOL HEXAKISPHOSPHATE
+Macromolecule #28: GUANOSINE-5'-TRIPHOSPHATE
+Macromolecule #29: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.1 mg/mL | ||||||||||||
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Buffer | pH: 7.9 Component:
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Grid | Model: Quantifoil / Material: COPPER / Mesh: 200 / Support film - Material: CARBON / Support film - topology: HOLEY ARRAY | ||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK II | ||||||||||||
Details | Monodisperse particle distribution |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: FEI FALCON III (4k x 4k) / Detector mode: INTEGRATING / Digitization - Dimensions - Width: 4096 pixel / Digitization - Dimensions - Height: 4096 pixel / Number grids imaged: 2 / Number real images: 28279 / Average exposure time: 1.0 sec. / Average electron dose: 120.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 70.0 µm / Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: -0.003 µm / Nominal defocus min: -0.001 µm / Nominal magnification: 132000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |