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Yorodumi- EMDB-6891: Cryo-EM structure of a human activated spliceosome (early Bact) a... -
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Basic information
| Entry | Database: EMDB / ID: EMD-6891 | ||||||||||||
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| Title | Cryo-EM structure of a human activated spliceosome (early Bact) at 4.9 angstrom. | ||||||||||||
Map data | Cryo-EM structure of the human activated spliceosome (early Bact) at 4.8 angstrom | ||||||||||||
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Keywords | spliceosome / cryo-EM structure / activated spliceosome / early Bact complex / pre-mRNA splicing / SPLICING | ||||||||||||
| Function / homology | Function and homology informationRES complex / negative regulation of chemokine-mediated signaling pathway / snoRNA splicing / U11/U12 snRNP / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP ...RES complex / negative regulation of chemokine-mediated signaling pathway / snoRNA splicing / U11/U12 snRNP / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / histone pre-mRNA 3'end processing complex / cis assembly of pre-catalytic spliceosome / regulation of vitamin D receptor signaling pathway / 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) / B-WICH complex / miRNA processing / nuclear retinoic acid receptor binding / protein methylation / U12-type spliceosomal complex / 7-methylguanosine cap hypermethylation / U1 snRNP binding / methylosome / RNA splicing, via transesterification reactions / pICln-Sm protein complex / U2-type catalytic step 1 spliceosome / regulation of mRNA splicing, via spliceosome / snRNP binding / positive regulation of mRNA splicing, via spliceosome / blastocyst formation / sno(s)RNA-containing ribonucleoprotein complex / splicing factor binding / SMN-Sm protein complex / small nuclear ribonucleoprotein complex / spliceosomal tri-snRNP complex / host-mediated activation of viral transcription / P granule / telomerase holoenzyme complex / U2-type precatalytic spliceosome / positive regulation of vitamin D receptor signaling pathway / commitment complex / mRNA cis splicing, via spliceosome / telomerase RNA binding / U2-type spliceosomal complex / nuclear vitamin D receptor binding / U2-type prespliceosome assembly / Notch binding / U2-type catalytic step 2 spliceosome / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / RUNX3 regulates NOTCH signaling / positive regulation of neurogenesis / NOTCH4 Intracellular Domain Regulates Transcription / SAGA complex / RNA Polymerase II Transcription Termination / U2 snRNP / U1 snRNP / U4 snRNP / NOTCH3 Intracellular Domain Regulates Transcription / U2-type prespliceosome / positive regulation of transcription by RNA polymerase III / WD40-repeat domain binding / K63-linked polyubiquitin modification-dependent protein binding / nuclear androgen receptor binding / precatalytic spliceosome / pattern recognition receptor activity / Notch-HLH transcription pathway / Formation of paraxial mesoderm / SMAD binding / positive regulation of transforming growth factor beta receptor signaling pathway / regulation of RNA splicing / spliceosomal complex assembly / mRNA Splicing - Minor Pathway / mRNA 3'-splice site recognition / positive regulation of transcription by RNA polymerase I / 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 / protein localization to nucleus / U2 snRNA binding / positive regulation of G1/S transition of mitotic cell cycle / U6 snRNA binding / pre-mRNA intronic binding / spliceosomal snRNP assembly / RNA processing / U1 snRNA binding / Cajal body / regulation of DNA repair / transcription regulator inhibitor activity / retinoic acid receptor signaling pathway / U4/U6 x U5 tri-snRNP complex / cellular response to retinoic acid / catalytic step 2 spliceosome / negative regulation of canonical NF-kappaB signal transduction / antiviral innate immune response / mRNA Splicing - Major Pathway / Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation / RNA splicing Similarity search - Function | ||||||||||||
| Biological species | Homo sapiens (human) / unidentified adenovirus | ||||||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 4.9 Å | ||||||||||||
Authors | Zhang X / Yan C | ||||||||||||
| Funding support | China, 3 items
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Citation | Journal: Cell Res / Year: 2018Title: Structure of the human activated spliceosome in three conformational states. Authors: Xiaofeng Zhang / Chuangye Yan / Xiechao Zhan / Lijia Li / Jianlin Lei / Yigong Shi / ![]() Abstract: During each cycle of pre-mRNA splicing, the pre-catalytic spliceosome (B complex) is converted into the activated spliceosome (B complex), which has a well-formed active site but cannot proceed to ...During each cycle of pre-mRNA splicing, the pre-catalytic spliceosome (B complex) is converted into the activated spliceosome (B complex), which has a well-formed active site but cannot proceed to the branching reaction. Here, we present the cryo-EM structure of the human B complex in three distinct conformational states. The EM map allows atomic modeling of nearly all protein components of the U2 small nuclear ribonucleoprotein (snRNP), including three of the SF3a complex and seven of the SF3b complex. The structure of the human B complex contains 52 proteins, U2, U5, and U6 small nuclear RNA (snRNA), and a pre-mRNA. Three distinct conformations have been captured, representing the early, mature, and late states of the human B complex. These complexes differ in the orientation of the Switch loop of Prp8, the splicing factors RNF113A and NY-CO-10, and most components of the NineTeen complex (NTC) and the NTC-related complex. Analysis of these three complexes and comparison with the B and C complexes reveal an ordered flux of components in the B-to-B and the B-to-B transitions, which ultimately prime the active site for the branching reaction. | ||||||||||||
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Structure visualization
| Movie |
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_6891.map.gz | 226.9 MB | EMDB map data format | |
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| Header (meta data) | emd-6891-v30.xml emd-6891.xml | 64.9 KB 64.9 KB | Display Display | EMDB header |
| Images | emd_6891.png | 163.3 KB | ||
| Filedesc metadata | emd-6891.cif.gz | 20.5 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-6891 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-6891 | HTTPS FTP |
-Validation report
| Summary document | emd_6891_validation.pdf.gz | 559.9 KB | Display | EMDB validaton report |
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| Full document | emd_6891_full_validation.pdf.gz | 559.5 KB | Display | |
| Data in XML | emd_6891_validation.xml.gz | 7 KB | Display | |
| Data in CIF | emd_6891_validation.cif.gz | 8.1 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-6891 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-6891 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 5z58MC ![]() 6889C ![]() 6890C ![]() 5z56C ![]() 5z57C C: citing same article ( M: atomic model generated by this map |
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| Similar structure data |
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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_6891.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Annotation | Cryo-EM structure of the human activated spliceosome (early Bact) at 4.8 angstrom | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.338 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 : early Bact spliceosome
+Supramolecule #1: early Bact spliceosome
+Macromolecule #1: Pre-mRNA-processing-splicing factor 8
+Macromolecule #3: 116 kDa U5 small nuclear ribonucleoprotein component
+Macromolecule #4: U5 small nuclear ribonucleoprotein 200 kDa helicase
+Macromolecule #5: U5 small nuclear ribonucleoprotein 40 kDa protein
+Macromolecule #6: Small nuclear ribonucleoprotein Sm D3
+Macromolecule #7: Small nuclear ribonucleoprotein-associated proteins B and B'
+Macromolecule #8: Small nuclear ribonucleoprotein Sm D1
+Macromolecule #9: Small nuclear ribonucleoprotein Sm D2
+Macromolecule #10: Small nuclear ribonucleoprotein F
+Macromolecule #11: Small nuclear ribonucleoprotein E
+Macromolecule #12: Small nuclear ribonucleoprotein G
+Macromolecule #16: U2 small nuclear ribonucleoprotein A'
+Macromolecule #17: U2 small nuclear ribonucleoprotein B''
+Macromolecule #18: Splicing factor 3A subunit 3
+Macromolecule #19: Splicing factor 3A subunit 1
+Macromolecule #20: Splicing factor 3A subunit 2
+Macromolecule #21: Splicing factor 3B subunit 1
+Macromolecule #22: Splicing factor 3B subunit 2
+Macromolecule #23: Splicing factor 3B subunit 3
+Macromolecule #24: Splicing factor 3B subunit 4
+Macromolecule #25: Splicing factor 3B subunit 6
+Macromolecule #26: PHD finger-like domain-containing protein 5A
+Macromolecule #27: Splicing factor 3B subunit 5
+Macromolecule #28: Crooked neck-like protein 1
+Macromolecule #29: Cell division cycle 5-like protein
+Macromolecule #30: RING finger protein 113A
+Macromolecule #31: Spliceosome-associated protein CWC15 homolog
+Macromolecule #32: Skip
+Macromolecule #33: Pleiotropic regulator 1
+Macromolecule #34: Pre-mRNA-splicing factor CWC22 homolog
+Macromolecule #35: Smad nuclear-interacting protein 1
+Macromolecule #36: RNA-binding motif protein, X-linked 2
+Macromolecule #37: BUD13 homolog
+Macromolecule #38: Peptidyl-prolyl cis-trans isomerase CWC27 homolog
+Macromolecule #39: Pre-mRNA-splicing factor ATP-dependent RNA helicase DHX16
+Macromolecule #2: U5 snRNA
+Macromolecule #13: U6 snRNA
+Macromolecule #14: pre-mRNA
+Macromolecule #15: U2 snRNA
+Macromolecule #40: INOSITOL HEXAKISPHOSPHATE
+Macromolecule #41: GUANOSINE-5'-TRIPHOSPHATE
+Macromolecule #42: MAGNESIUM ION
+Macromolecule #43: ZINC ION
-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 / Details: 20 mM HEPES-KOH, pH 7.9, 150 mM NaCl, 1.5 mM MgCl2 |
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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: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 48.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
| Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi


Keywords
Homo sapiens (human)
unidentified adenovirus
Authors
China, 3 items
Citation
UCSF Chimera










































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