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Yorodumi- EMDB-19399: Integrative Structure of the human intron lariat Spliceosome (ILS'') -
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Open data
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Basic information
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| Title | Integrative Structure of the human intron lariat Spliceosome (ILS'') | |||||||||
Map data | composite map | |||||||||
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Keywords | mRNA / splicing / intron lariat spliceosome / pre-mRNA | |||||||||
| Function / homology | Function and homology informationRNA lariat debranching enzyme activator activity / post-spliceosomal complex / spliceosomal complex disassembly / U2-type post-mRNA release spliceosomal complex / biomineral tissue development / negative regulation of double-strand break repair via nonhomologous end joining / regulation of skeletal muscle satellite cell proliferation / protection from non-homologous end joining at telomere / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex ...RNA lariat debranching enzyme activator activity / post-spliceosomal complex / spliceosomal complex disassembly / U2-type post-mRNA release spliceosomal complex / biomineral tissue development / negative regulation of double-strand break repair via nonhomologous end joining / regulation of skeletal muscle satellite cell proliferation / protection from non-homologous end joining at telomere / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / 3'-5' RNA helicase activity / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / generation of catalytic spliceosome for first transesterification step / U7 snRNP / positive regulation of myoblast proliferation / histone methyltransferase binding / histone pre-mRNA 3'end processing complex / regulation of vitamin D receptor signaling pathway / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / nuclear retinoic acid receptor binding / embryonic brain development / oocyte development / alternative mRNA splicing, via spliceosome / U12-type spliceosomal complex / response to alkaloid / protein methylation / 7-methylguanosine cap hypermethylation / U1 snRNP binding / U2-type catalytic step 1 spliceosome / RNA splicing, via transesterification reactions / methylosome / pre-mRNA binding / pICln-Sm protein complex / positive regulation of mRNA splicing, via spliceosome / ATP-dependent activity, acting on RNA / snRNP binding / mRNA 3'-end processing / sno(s)RNA-containing ribonucleoprotein complex / small nuclear ribonucleoprotein complex / Notch binding / SMN-Sm protein complex / spliceosomal tri-snRNP complex / host-mediated activation of viral transcription / mRNA cis splicing, via spliceosome / U2-type precatalytic spliceosome / P granule / positive regulation of vitamin D receptor signaling pathway / commitment complex / telomerase holoenzyme complex / nuclear vitamin D receptor binding / U2-type prespliceosome assembly / U2-type spliceosomal complex / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / Transport of Mature mRNA derived from an Intron-Containing Transcript / telomerase RNA binding / RUNX3 regulates NOTCH signaling / U2-type catalytic step 2 spliceosome / NOTCH4 Intracellular Domain Regulates Transcription / U2 snRNP / U1 snRNP / RNA Polymerase II Transcription Termination / U4 snRNP / NOTCH3 Intracellular Domain Regulates Transcription / positive regulation of neurogenesis / U2-type prespliceosome / protein peptidyl-prolyl isomerization / K63-linked polyubiquitin modification-dependent protein binding / inner cell mass cell proliferation / ubiquitin-ubiquitin ligase activity / nuclear androgen receptor binding / muscle organ development / snoRNA binding / precatalytic spliceosome / generation of catalytic spliceosome for second transesterification step / WD40-repeat domain binding / Notch-HLH transcription pathway / lipid biosynthetic process / Formation of paraxial mesoderm / positive regulation of transforming growth factor beta receptor signaling pathway / SMAD binding / mitotic G2 DNA damage checkpoint signaling / spliceosomal complex assembly / mRNA 3'-splice site recognition / mRNA Splicing - Minor Pathway / spliceosomal tri-snRNP complex assembly / Prp19 complex / U5 snRNA binding / U5 snRNP / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / blastocyst development / protein K63-linked ubiquitination / U2 snRNA binding / embryonic organ development / positive regulation of G1/S transition of mitotic cell cycle / U6 snRNA binding / pre-mRNA intronic binding Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.5 Å | |||||||||
Authors | Rothe P / Vorlaender MK / Plaschka C | |||||||||
| Funding support | European Union, 1 items
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Citation | Journal: Nature / Year: 2024Title: Mechanism for the initiation of spliceosome disassembly. Authors: Matthias K Vorländer / Patricia Rothe / Justus Kleifeld / Eric D Cormack / Lalitha Veleti / Daria Riabov-Bassat / Laura Fin / Alex W Phillips / Luisa Cochella / Clemens Plaschka / ![]() Abstract: Precursor-mRNA (pre-mRNA) splicing requires the assembly, remodelling and disassembly of the multi-megadalton ribonucleoprotein complex called the spliceosome. Recent studies have shed light on ...Precursor-mRNA (pre-mRNA) splicing requires the assembly, remodelling and disassembly of the multi-megadalton ribonucleoprotein complex called the spliceosome. Recent studies have shed light on spliceosome assembly and remodelling for catalysis, but the mechanism of disassembly remains unclear. Here we report cryo-electron microscopy structures of nematode and human terminal intron lariat spliceosomes along with biochemical and genetic data. Our results uncover how four disassembly factors and the conserved RNA helicase DHX15 initiate spliceosome disassembly. The disassembly factors probe large inner and outer spliceosome surfaces to detect the release of ligated mRNA. Two of these factors, TFIP11 and C19L1, and three general spliceosome subunits, SYF1, SYF2 and SDE2, then dock and activate DHX15 on the catalytic U6 snRNA to initiate disassembly. U6 therefore controls both the start and end of pre-mRNA splicing. Taken together, our results explain the molecular basis of the initiation of canonical spliceosome disassembly and provide a framework to understand general spliceosomal RNA helicase control and the discard of aberrant spliceosomes. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_19399.map.gz | 8 MB | EMDB map data format | |
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| Header (meta data) | emd-19399-v30.xml emd-19399.xml | 61.3 KB 61.3 KB | Display Display | EMDB header |
| Images | emd_19399.png | 96.2 KB | ||
| Filedesc metadata | emd-19399.cif.gz | 18.7 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-19399 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-19399 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8ro2MC ![]() 8ro0C ![]() 8ro1C ![]() 9fmdC C: citing same article ( M: atomic model generated by this map |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_19399.map.gz / Format: CCP4 / Size: 282.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | composite map | ||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.2375 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 : Human Intron-lariat splicoesome
+Supramolecule #1: Human Intron-lariat splicoesome
+Macromolecule #1: U2 snRNA
+Macromolecule #2: U6 snRNA
+Macromolecule #26: U5 snRNA
+Macromolecule #29: INTRON
+Macromolecule #3: 116 kDa U5 small nuclear ribonucleoprotein component
+Macromolecule #4: Pre-mRNA-splicing factor ISY1 homolog
+Macromolecule #5: ATP-dependent RNA helicase DHX15
+Macromolecule #6: U5 small nuclear ribonucleoprotein 40 kDa protein
+Macromolecule #7: Crooked neck-like protein 1
+Macromolecule #8: Pre-mRNA-splicing factor SPF27
+Macromolecule #9: CWF19-like protein 1
+Macromolecule #10: Protein BUD31 homolog
+Macromolecule #11: Pre-mRNA-splicing factor RBM22
+Macromolecule #12: Intron-binding protein aquarius
+Macromolecule #13: SNW domain-containing protein 1
+Macromolecule #14: Peptidyl-prolyl cis-trans isomerase-like 1
+Macromolecule #15: Pre-mRNA-processing factor 17
+Macromolecule #16: Coiled-coil domain-containing protein 12
+Macromolecule #17: Small nuclear ribonucleoprotein Sm D3
+Macromolecule #18: Small nuclear ribonucleoprotein Sm D1
+Macromolecule #19: Small nuclear ribonucleoprotein Sm D2
+Macromolecule #20: Small nuclear ribonucleoprotein E
+Macromolecule #21: Small nuclear ribonucleoprotein F
+Macromolecule #22: Small nuclear ribonucleoprotein G
+Macromolecule #23: Pre-mRNA-processing factor 19
+Macromolecule #24: Splicing regulator SDE2
+Macromolecule #25: Splicing factor ESS-2 homolog
+Macromolecule #27: Pre-mRNA-processing-splicing factor 8
+Macromolecule #28: Pre-mRNA-splicing factor SYF1
+Macromolecule #30: Cell division cycle 5-like protein
+Macromolecule #31: CWF19-like protein 2
+Macromolecule #32: Pre-mRNA-splicing factor SYF2
+Macromolecule #33: Spliceosome-associated protein CWC15 homolog
+Macromolecule #34: PAX3- and PAX7-binding protein 1
+Macromolecule #35: Pleiotropic regulator 1
+Macromolecule #36: Tuftelin-interacting protein 11
+Macromolecule #37: Small nuclear ribonucleoprotein-associated proteins B and B'
+Macromolecule #38: GUANOSINE-5'-TRIPHOSPHATE
+Macromolecule #39: ZINC ION
+Macromolecule #40: INOSITOL HEXAKISPHOSPHATE
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.9 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 50.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.75 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
| Startup model | Type of model: PDB ENTRY PDB model - PDB ID: |
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| Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 87951 |
| Initial angle assignment | Type: OTHER |
| Final angle assignment | Type: OTHER |
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Keywords
Homo sapiens (human)
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FIELD EMISSION GUN

