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Yorodumi- EMDB-18235: 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 3, Map 3) | |||||||||
Map data | sharpened map | |||||||||
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Keywords | U5 snRNP / CD2BP2 / TSSC4 / spliceosome / splicing | |||||||||
| Function / homology | Function and homology informationRNA localization / R-loop processing / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / cis assembly of pre-catalytic spliceosome / histone pre-mRNA 3'end processing complex / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs ...RNA localization / R-loop processing / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / cis assembly of pre-catalytic spliceosome / histone pre-mRNA 3'end processing complex / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / spliceosome conformational change to release U4 (or U4atac) and U1 (or U11) / protein methylation / 7-methylguanosine cap hypermethylation / U12-type spliceosomal complex / U1 snRNP binding / U2-type catalytic step 1 spliceosome / methylosome / pICln-Sm protein complex / RNA splicing, via transesterification reactions / sno(s)RNA-containing ribonucleoprotein complex / small nuclear ribonucleoprotein complex / SMN-Sm protein complex / spliceosomal tri-snRNP complex / P granule / snRNP binding / commitment complex / U2-type precatalytic spliceosome / telomerase holoenzyme complex / telomerase RNA binding / U2-type catalytic step 2 spliceosome / U2-type prespliceosome assembly / U2-type spliceosomal complex / U1 snRNP / RNA Polymerase II Transcription Termination / U2 snRNP / U4 snRNP / U2-type prespliceosome / K63-linked polyubiquitin modification-dependent protein binding / precatalytic spliceosome / mRNA Splicing - Minor Pathway / spliceosomal complex assembly / spliceosomal tri-snRNP complex assembly / U5 snRNP / U5 snRNA binding / pre-mRNA intronic binding / spliceosomal snRNP assembly / U6 snRNA binding / U2 snRNA binding / ribonucleoprotein complex binding / Cajal body / U1 snRNA binding / RNA processing / U4/U6 x U5 tri-snRNP complex / catalytic step 2 spliceosome / mRNA Splicing - Major Pathway / RNA splicing / helicase activity / spliceosomal complex / response to cocaine / mRNA splicing, via spliceosome / cellular response to xenobiotic stimulus / cellular response to tumor necrosis factor / fibrillar center / mRNA processing / osteoblast differentiation / cellular response to lipopolysaccharide / snRNP Assembly / SARS-CoV-2 modulates host translation machinery / protein-macromolecule adaptor activity / RNA helicase activity / nuclear speck / cilium / nuclear body / ciliary basal body / RNA helicase / mRNA binding / GTPase activity / centrosome / GTP binding / chromatin / nucleolus / enzyme binding / ATP hydrolysis activity / positive regulation of transcription by RNA polymerase II / RNA binding / extracellular exosome / nucleoplasm / ATP binding / membrane / identical protein binding / nucleus / plasma membrane / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.9 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
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_18235.map.gz | 168.1 MB | EMDB map data format | |
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| Header (meta data) | emd-18235-v30.xml emd-18235.xml | 37.6 KB 37.6 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_18235_fsc.xml | 11.9 KB | Display | FSC data file |
| Images | emd_18235.png | 69.2 KB | ||
| Filedesc metadata | emd-18235.cif.gz | 12.2 KB | ||
| Others | emd_18235_additional_1.map.gz emd_18235_half_map_1.map.gz emd_18235_half_map_2.map.gz | 89.5 MB 165.1 MB 165.1 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-18235 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-18235 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8q7wMC ![]() 8q7qC ![]() 8q7vC ![]() 8q7xC 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_18235.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | sharpened map | ||||||||||||||||||||||||||||||||||||
| 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: unsharpened map
| File | emd_18235_additional_1.map | ||||||||||||
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| Annotation | unsharpened map | ||||||||||||
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| Density Histograms |
-Half map: half map 2
| File | emd_18235_half_map_1.map | ||||||||||||
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| Annotation | half map 2 | ||||||||||||
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| Density Histograms |
-Half map: half map 1
| File | emd_18235_half_map_2.map | ||||||||||||
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| Annotation | half map 1 | ||||||||||||
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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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Keywords
Homo sapiens (human)
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Processing
FIELD EMISSION GUN


