+Open data
-Basic information
Entry | Database: PDB / ID: 8i0v | ||||||
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Title | The cryo-EM structure of human post-Bact complex | ||||||
Components |
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Keywords | SPLICING / spliceosome / Bact complex / RNA splicing / PRP2 / branching | ||||||
Function / homology | Function and homology information U11/U12 snRNP / post-mRNA release spliceosomal complex / regulation of retinoic acid receptor signaling pathway / 3'-5' RNA helicase activity / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / generation of catalytic spliceosome for first transesterification step / B-WICH complex ...U11/U12 snRNP / post-mRNA release spliceosomal complex / regulation of retinoic acid receptor signaling pathway / 3'-5' RNA helicase activity / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / generation of catalytic spliceosome for first transesterification step / B-WICH complex / regulation of vitamin D receptor signaling pathway / histone pre-mRNA 3'end processing complex / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / splicing factor binding / protein methylation / embryonic brain development / U12-type spliceosomal complex / methylosome / nuclear retinoic acid receptor binding / 7-methylguanosine cap hypermethylation / poly(A) binding / positive regulation of androgen receptor activity / Prp19 complex / U1 snRNP binding / snRNP binding / mRNA 3'-end processing / pICln-Sm protein complex / RNA splicing, via transesterification reactions / U2-type catalytic step 1 spliceosome / small nuclear ribonucleoprotein complex / pre-mRNA binding / sno(s)RNA-containing ribonucleoprotein complex / C2H2 zinc finger domain binding / regulation of mRNA splicing, via spliceosome / SMN-Sm protein complex / telomerase RNA binding / spliceosomal tri-snRNP complex / telomerase holoenzyme complex / P granule / positive regulation by host of viral transcription / U2-type precatalytic spliceosome / U2-type spliceosomal complex / mRNA cis splicing, via spliceosome / positive regulation of vitamin D receptor signaling pathway / commitment complex / Transport of Mature mRNA derived from an Intron-Containing Transcript / U2-type prespliceosome assembly / nuclear vitamin D receptor binding / U2-type catalytic step 2 spliceosome / Notch binding / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / SAGA complex / U4 snRNP / positive regulation of mRNA splicing, via spliceosome / RUNX3 regulates NOTCH signaling / U2 snRNP / NOTCH4 Intracellular Domain Regulates Transcription / RNA Polymerase II Transcription Termination / positive regulation of transcription by RNA polymerase III / U1 snRNP / positive regulation of neurogenesis / ubiquitin-ubiquitin ligase activity / pattern recognition receptor activity / NOTCH3 Intracellular Domain Regulates Transcription / lipid biosynthetic process / WD40-repeat domain binding / U2-type prespliceosome / nuclear androgen receptor binding / precatalytic spliceosome / K63-linked polyubiquitin modification-dependent protein binding / cyclosporin A binding / positive regulation of transcription by RNA polymerase I / Notch-HLH transcription pathway / positive regulation of transforming growth factor beta receptor signaling pathway / Formation of paraxial mesoderm / mRNA Splicing - Minor Pathway / spliceosomal complex assembly / SMAD binding / mitotic G2 DNA damage checkpoint signaling / regulation of RNA splicing / protein K63-linked ubiquitination / blastocyst development / protein peptidyl-prolyl isomerization / protein localization to nucleus / spliceosomal tri-snRNP complex assembly / transcription-coupled nucleotide-excision repair / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / retinoic acid receptor signaling pathway / U5 snRNA binding / U5 snRNP / positive regulation of G1/S transition of mitotic cell cycle / proteasomal protein catabolic process / embryonic organ development / U2 snRNA binding / positive regulation of viral genome replication / RNA processing / U6 snRNA binding / Cajal body / spliceosomal snRNP assembly Similarity search - Function | ||||||
Biological species | Homo sapiens (human) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å | ||||||
Authors | Zhan, X. / Lu, Y. / Shi, Y. | ||||||
Funding support | China, 1items
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Citation | Journal: Nat Commun / Year: 2024 Title: Molecular basis for the activation of human spliceosome. Authors: Xiechao Zhan / Yichen Lu / Yigong Shi / Abstract: The spliceosome executes pre-mRNA splicing through four sequential stages: assembly, activation, catalysis, and disassembly. Activation of the spliceosome, namely remodeling of the pre-catalytic ...The spliceosome executes pre-mRNA splicing through four sequential stages: assembly, activation, catalysis, and disassembly. Activation of the spliceosome, namely remodeling of the pre-catalytic spliceosome (B complex) into the activated spliceosome (B complex) and the catalytically activated spliceosome (B complex), involves major flux of protein components and structural rearrangements. Relying on a splicing inhibitor, we have captured six intermediate states between the B and B complexes: pre-B, B-I, B-II, B-III, B-IV, and post-B. Their cryo-EM structures, together with an improved structure of the catalytic step I spliceosome (C complex), reveal how the catalytic center matures around the internal stem loop of U6 snRNA, how the branch site approaches 5'-splice site, how the RNA helicase PRP2 rearranges to bind pre-mRNA, and how U2 snRNP undergoes remarkable movement to facilitate activation. We identify a previously unrecognized key role of PRP2 in spliceosome activation. Our study recapitulates a molecular choreography of the human spliceosome during its catalytic activation. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8i0v.cif.gz | 2.6 MB | Display | PDBx/mmCIF format |
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PDB format | pdb8i0v.ent.gz | Display | PDB format | |
PDBx/mmJSON format | 8i0v.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8i0v_validation.pdf.gz | 2.1 MB | Display | wwPDB validaton report |
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Full document | 8i0v_full_validation.pdf.gz | 2.5 MB | Display | |
Data in XML | 8i0v_validation.xml.gz | 379.8 KB | Display | |
Data in CIF | 8i0v_validation.cif.gz | 610.6 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/i0/8i0v ftp://data.pdbj.org/pub/pdb/validation_reports/i0/8i0v | HTTPS FTP |
-Related structure data
Related structure data | 35111MC 8i0pC 8i0rC 8i0sC 8i0tC 8i0uC 8i0wC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-Protein , 14 types, 15 molecules ACEJLNPQRTUamy7
#1: Protein | Mass: 273974.250 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q6P2Q9 | ||||
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#3: Protein | Mass: 109560.625 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q15029 | ||||
#4: Protein | Mass: 39359.492 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q96DI7 | ||||
#9: Protein | Mass: 100610.008 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9BZJ0 | ||||
#10: Protein | Mass: 92406.883 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q99459 | ||||
#12: Protein | Mass: 17032.850 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P41223 | ||||
#14: Protein | Mass: 26674.447 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9P013 | ||||
#15: Protein | Mass: 171502.453 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O60306, RNA helicase | ||||
#16: Protein | Mass: 61770.648 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q13573 | ||||
#18: Protein | Mass: 57280.758 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O43660 | ||||
#19: Protein | Mass: 300255.312 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9UQ35 | ||||
#25: Protein | Mass: 24642.131 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P14678 #33: Protein | | Mass: 33475.773 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9UNP9, peptidylprolyl isomerase #38: Protein | | Mass: 12427.524 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q7RTV0 |
-RNA chain , 4 types, 4 molecules BFGH
#2: RNA chain | Mass: 37254.855 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 20330981 |
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#5: RNA chain | Mass: 34404.438 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) |
#6: RNA chain | Mass: 70435.383 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) |
#7: RNA chain | Mass: 60186.445 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 340097 |
-Pre-mRNA-splicing factor ... , 6 types, 6 molecules IMOVXZ
#8: Protein | Mass: 100148.711 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9HCS7 |
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#11: Protein | Mass: 28780.518 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O95926 |
#13: Protein | Mass: 46959.555 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9NW64 |
#20: Protein | Mass: 105646.578 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9HCG8 |
#22: Protein | Mass: 119443.633 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O60231, RNA helicase |
#24: Protein | Mass: 26163.420 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O75934 |
-Peptidyl-prolyl cis-trans isomerase-like ... , 2 types, 2 molecules SY
#17: Protein | Mass: 18257.805 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y3C6, peptidylprolyl isomerase |
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#23: Protein | Mass: 57324.176 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q8WUA2, peptidylprolyl isomerase |
-Pre-mRNA-processing factor ... , 2 types, 5 molecules Wqrst
#21: Protein | Mass: 65612.180 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O60508 |
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#32: Protein | Mass: 55245.547 Da / Num. of mol.: 4 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) References: UniProt: Q9UMS4, RING-type E3 ubiquitin transferase |
-Small nuclear ribonucleoprotein ... , 6 types, 12 molecules bnchdiejfkgl
#26: Protein | Mass: 13310.653 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62314 #27: Protein | Mass: 13551.928 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62316 #28: Protein | Mass: 9734.171 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62306 #29: Protein | Mass: 10817.601 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62304 #30: Protein | Mass: 8508.084 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62308 #31: Protein | Mass: 13940.308 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62318 |
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-Splicing factor 3B subunit ... , 5 types, 5 molecules 13245
#34: Protein | Mass: 146024.938 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O75533 |
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#35: Protein | Mass: 135718.844 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q15393 |
#36: Protein | Mass: 100377.812 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q13435 |
#37: Protein | Mass: 44436.570 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q15427 |
#39: Protein | Mass: 10149.369 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9BWJ5 |
-U2 small nuclear ribonucleoprotein ... , 2 types, 2 molecules po
#40: Protein | Mass: 25524.367 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P08579 |
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#41: Protein | Mass: 28456.584 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P09661 |
-Non-polymers , 4 types, 15 molecules
#42: Chemical | ChemComp-IHP / | ||
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#43: Chemical | ChemComp-GTP / | ||
#44: Chemical | ChemComp-MG / #45: Chemical | ChemComp-ZN / |
-Details
Has ligand of interest | N |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: The human Bact-III complex / Type: COMPLEX Entity ID: #1-#4, #20, #5, #7, #10, #14, #16, #18, #6, #13, #12, #19, #25-#31, #21-#23, #17, #32, #24, #8, #36, #35, #9, #11, #34, #33, #15, #37-#41 Source: NATURAL |
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Source (natural) | Organism: Homo sapiens (human) |
Buffer solution | pH: 7.9 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1400 nm |
Image recording | Electron dose: 50 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K3 (6k x 4k) |
-Processing
Software | Name: PHENIX / Version: 1.17.1_3660: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: NONE | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 92596 / Symmetry type: POINT | ||||||||||||||||||||||||
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