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Yorodumi- EMDB-18237: Structure of the recycling U5 snRNP bound to chaperone CD2BP2 (St... -
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Basic information
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| Title | Structure of the recycling U5 snRNP bound to chaperone CD2BP2 (State 4, Map 4) | |||||||||
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Keywords | U5 snRNP / CD2BP2 / TSSC4 / spliceosome / splicing | |||||||||
| Function / homology | Function and homology informationRNA localization / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / R-loop processing / cis assembly of pre-catalytic spliceosome / histone pre-mRNA 3'end processing complex / U4atac snRNP / SLBP independent Processing of Histone Pre-mRNAs ...RNA localization / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / R-loop processing / cis assembly of pre-catalytic spliceosome / histone pre-mRNA 3'end processing complex / U4atac snRNP / SLBP independent Processing of Histone Pre-mRNAs / nuclear histone mRNA catabolic process / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / U4atac/U6atac snRNP / U11/U12 snRNP / U4atac/U6atac x U5 tri-snRNP complex / 7-methylguanosine cap hypermethylation / U12-type spliceosomal complex / U1 snRNP binding / RNA splicing, via transesterification reactions / pICln-Sm protein complex / snRNP binding / RNA Polymerase II Transcription Termination / sno(s)RNA-containing ribonucleoprotein complex / methylosome / small nuclear ribonucleoprotein complex / U12-type catalytic step 2 spliceosome / post-spliceosomal complex / SMN-Sm protein complex / spliceosomal tri-snRNP complex / U12-type precatalytic spliceosome / P granule / commitment complex / U2-type precatalytic spliceosome / post-mRNA release spliceosomal complex / U2-type spliceosomal complex / telomerase holoenzyme complex / U2-type prespliceosome assembly / telomerase RNA binding / U4/U6 snRNP / U2-type catalytic step 2 spliceosome / U1 snRNP / protein methylation / spliceosome conformational change to release U4 (or U4atac) and U1 (or U11) / U2 snRNP / U4 snRNP / U2-type prespliceosome / U2-type catalytic step 1 spliceosome / K63-linked polyubiquitin modification-dependent protein binding / mRNA Splicing - Minor Pathway / spliceosomal complex assembly / precatalytic spliceosome / negative regulation of mRNA splicing, via spliceosome / U5 snRNA binding / spliceosomal tri-snRNP complex assembly / U5 snRNP / U6 snRNA binding / RNA splicing / mRNA cis splicing, via spliceosome / U4/U6 x U5 tri-snRNP complex / ribonucleoprotein complex binding / Cajal body / RNA processing / spliceosomal snRNP assembly / catalytic step 2 spliceosome / helicase activity / mRNA Splicing - Major Pathway / mRNA processing / spliceosomal complex / response to cocaine / cellular response to xenobiotic stimulus / cellular response to tumor necrosis factor / CHD1 and CHD2 subfamily / mRNA splicing, via spliceosome / osteoblast differentiation / mRNA Polyadenylation / cellular response to lipopolysaccharide / Dengue Virus-Host Interactions / snRNP Assembly / SARS-CoV-2 modulates host translation machinery / nuclear body / RNA helicase activity / nuclear speck / protein-macromolecule adaptor activity / RNA helicase / chromosome / GTPase activity / nucleolus / GTP binding / chromatin / enzyme binding / positive regulation of transcription by RNA polymerase II / ATP hydrolysis activity / RNA binding / extracellular exosome / nucleoplasm / ATP binding / membrane / identical protein binding / nucleus / cytosol Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 4.6 Å | |||||||||
Authors | Riabov Bassat D / Plaschka C / Vorlaender MK | |||||||||
| Funding support | European Union, 2 items
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Citation | Journal: Nat Struct Mol Biol / Year: 2024Title: Structural basis of human U5 snRNP late biogenesis and recycling. Authors: Daria Riabov Bassat / Supapat Visanpattanasin / Matthias K Vorländer / Laura Fin / Alexander W Phillips / Clemens Plaschka / ![]() Abstract: Pre-mRNA splicing by the spliceosome requires the biogenesis and recycling of its small nuclear ribonucleoprotein (snRNP) complexes, which are consumed in each round of splicing. The human U5 snRNP ...Pre-mRNA splicing by the spliceosome requires the biogenesis and recycling of its small nuclear ribonucleoprotein (snRNP) complexes, which are consumed in each round of splicing. The human U5 snRNP is the ~1 MDa 'heart' of the spliceosome and is recycled through an unknown mechanism involving major architectural rearrangements and the dedicated chaperones CD2BP2 and TSSC4. Late steps in U5 snRNP biogenesis similarly involve these chaperones. Here we report cryo-electron microscopy structures of four human U5 snRNP-CD2BP2-TSSC4 complexes, revealing how a series of molecular events primes the U5 snRNP to generate the ~2 MDa U4/U6.U5 tri-snRNP, the largest building block of the spliceosome. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_18237.map.gz | 168.1 MB | EMDB map data format | |
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| Header (meta data) | emd-18237-v30.xml emd-18237.xml | 37.4 KB 37.4 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_18237_fsc.xml | 12 KB | Display | FSC data file |
| Images | emd_18237.png | 100.8 KB | ||
| Filedesc metadata | emd-18237.cif.gz | 12.2 KB | ||
| Others | emd_18237_additional_1.map.gz emd_18237_half_map_1.map.gz emd_18237_half_map_2.map.gz | 89.3 MB 165.3 MB 165.3 MB | ||
| Archive directory | https://data.pdbj.org/pub/emdb/structures/EMD-18237 ftp://data.pdbj.org/pub/emdb/structures/EMD-18237 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8q7xMC ![]() 8q7qC ![]() 8q7vC ![]() 8q7wC 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_18237.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.24 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Additional map: #1
| File | emd_18237_additional_1.map | ||||||||||||
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-Half map: #2
| File | emd_18237_half_map_1.map | ||||||||||||
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| Density Histograms |
-Half map: #1
| File | emd_18237_half_map_2.map | ||||||||||||
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| Density Histograms |
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Sample components
+Entire : Structure of the recycling U5 snRNP bound to chaperone CD2BP2 (St...
+Supramolecule #1: Structure of the recycling U5 snRNP bound to chaperone CD2BP2 (St...
+Macromolecule #1: U5 snRNA
+Macromolecule #2: Pre-mRNA-processing-splicing factor 8
+Macromolecule #3: U5 small nuclear ribonucleoprotein 200 kDa helicase
+Macromolecule #4: 116 kDa U5 small nuclear ribonucleoprotein component
+Macromolecule #5: U5 small nuclear ribonucleoprotein 40 kDa protein
+Macromolecule #6: Probable ATP-dependent RNA helicase DDX23
+Macromolecule #7: Pre-mRNA-processing factor 6
+Macromolecule #8: CD2 antigen cytoplasmic tail-binding protein 2
+Macromolecule #9: Small nuclear ribonucleoprotein Sm D1
+Macromolecule #10: Small nuclear ribonucleoprotein-associated proteins B and B'
+Macromolecule #11: Small nuclear ribonucleoprotein Sm D2
+Macromolecule #12: Small nuclear ribonucleoprotein Sm D3
+Macromolecule #13: Small nuclear ribonucleoprotein E
+Macromolecule #14: Small nuclear ribonucleoprotein F
+Macromolecule #15: Small nuclear ribonucleoprotein G
+Macromolecule #16: MAGNESIUM ION
+Macromolecule #17: GUANOSINE-5'-TRIPHOSPHATE
-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: 40.0 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: 0.5 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi



Keywords
Homo sapiens (human)
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Processing
FIELD EMISSION GUN


