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Open data
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Basic information
Entry | Database: PDB / ID: 7a5p | |||||||||
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Title | Human C Complex Spliceosome - Medium-resolution PERIPHERY | |||||||||
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![]() | SPLICING / human C complex / spliceosome / hC / human step 1 spliceosome | |||||||||
Function / homology | ![]() striated muscle dense body / exon-exon junction subcomplex mago-y14 / negative regulation of selenocysteine incorporation / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / post-spliceosomal complex / cellular response to selenite ion / selenocysteine insertion sequence binding / exon-exon junction complex / regulation of translation at postsynapse, modulating synaptic transmission / regulation of retinoic acid receptor signaling pathway ...striated muscle dense body / exon-exon junction subcomplex mago-y14 / negative regulation of selenocysteine incorporation / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / post-spliceosomal complex / cellular response to selenite ion / selenocysteine insertion sequence binding / exon-exon junction complex / regulation of translation at postsynapse, modulating synaptic transmission / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / U2 snRNP binding / negative regulation of excitatory postsynaptic potential / U7 snRNA binding / histone pre-mRNA DCP binding / 3'-5' RNA helicase activity / U7 snRNP / generation of catalytic spliceosome for first transesterification step / Z-decay: degradation of maternal mRNAs by zygotically expressed factors / alternative mRNA splicing, via spliceosome / 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 / regulation of mRNA processing / Deadenylation of mRNA / spliceosome conformational change to release U4 (or U4atac) and U1 (or U11) / nuclear retinoic acid receptor binding / embryonic brain development / protein methylation / U12-type spliceosomal complex / poly(A) binding / 7-methylguanosine cap hypermethylation / U1 snRNP binding / M-decay: degradation of maternal mRNAs by maternally stored factors / RNA splicing, via transesterification reactions / mRNA 3'-end processing / methylosome / embryonic cranial skeleton morphogenesis / regulation of mRNA splicing, via spliceosome / oocyte development / pICln-Sm protein complex / C2H2 zinc finger domain binding / U2-type catalytic step 1 spliceosome / positive regulation of mRNA splicing, via spliceosome / pre-mRNA binding / snRNP binding / small nuclear ribonucleoprotein complex / telomerase holoenzyme complex / SMN-Sm protein complex / P granule / host-mediated activation of viral transcription / telomerase RNA binding / spliceosomal tri-snRNP complex / U2-type precatalytic spliceosome / U2-type spliceosomal complex / positive regulation of vitamin D receptor signaling pathway / commitment complex / mRNA cis splicing, via spliceosome / U2-type prespliceosome assembly / Transport of Mature mRNA derived from an Intron-Containing Transcript / nuclear vitamin D receptor binding / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / Notch binding / RUNX3 regulates NOTCH signaling / U2-type catalytic step 2 spliceosome / NOTCH4 Intracellular Domain Regulates Transcription / U4 snRNP / U2 snRNP / RNA Polymerase II Transcription Termination / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / exploration behavior / U1 snRNP / NOTCH3 Intracellular Domain Regulates Transcription / U2-type prespliceosome / WD40-repeat domain binding / regulation of alternative mRNA splicing, via spliceosome / inner cell mass cell proliferation / ubiquitin-ubiquitin ligase activity / positive regulation of neurogenesis / nuclear androgen receptor binding / K63-linked polyubiquitin modification-dependent protein binding / precatalytic spliceosome / lipid biosynthetic process / muscle organ development / cyclosporin A binding / generation of catalytic spliceosome for second transesterification step / Notch-HLH transcription pathway / Formation of paraxial mesoderm / positive regulation of transforming growth factor beta receptor signaling pathway / SMAD binding / spliceosomal complex assembly / mitotic G2 DNA damage checkpoint signaling / mRNA Splicing - Minor Pathway / negative regulation of DNA damage response, signal transduction by p53 class mediator / mRNA 3'-splice site recognition / associative learning / spliceosomal tri-snRNP complex assembly / blastocyst development Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 5 Å | |||||||||
![]() | Bertram, K. / Kastner, B. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural Insights into the Roles of Metazoan-Specific Splicing Factors in the Human Step 1 Spliceosome. Authors: Karl Bertram / Leyla El Ayoubi / Olexandr Dybkov / Dmitry E Agafonov / Cindy L Will / Klaus Hartmuth / Henning Urlaub / Berthold Kastner / Holger Stark / Reinhard Lührmann / ![]() Abstract: Human spliceosomes contain numerous proteins absent in yeast, whose functions remain largely unknown. Here we report a 3D cryo-EM structure of the human spliceosomal C complex at 3.4 Å core ...Human spliceosomes contain numerous proteins absent in yeast, whose functions remain largely unknown. Here we report a 3D cryo-EM structure of the human spliceosomal C complex at 3.4 Å core resolution and 4.5-5.7 Å at its periphery, and aided by protein crosslinking we determine its molecular architecture. Our structure provides additional insights into the spliceosome's architecture between the catalytic steps of splicing, and how proteins aid formation of the spliceosome's catalytically active RNP (ribonucleoprotein) conformation. It reveals the spatial organization of the metazoan-specific proteins PPWD1, WDR70, FRG1, and CIR1 in human C complexes, indicating they stabilize functionally important protein domains and RNA structures rearranged/repositioned during the B to C transition. Structural comparisons with human B, C, and P complexes reveal an intricate cascade of RNP rearrangements during splicing catalysis, with intermediate RNP conformations not found in yeast, and additionally elucidate the structural basis for the sequential recruitment of metazoan-specific spliceosomal proteins. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 1.8 MB | Display | ![]() |
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PDB format | ![]() | 1.1 MB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.5 MB | Display | ![]() |
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Full document | ![]() | 1.5 MB | Display | |
Data in XML | ![]() | 182.9 KB | Display | |
Data in CIF | ![]() | 327.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 11570MC ![]() 6zymC C: citing same article ( M: map data used to model this data |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
-RNA chain , 4 types, 4 molecules 256Y
#1: RNA chain | Mass: 312349.656 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#2: RNA chain | Mass: 36908.668 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#3: RNA chain | Mass: 34098.270 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#20: RNA chain | Mass: 103979.148 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Protein , 17 types, 18 molecules 8ACLOSUbmopquvwxyz
#4: Protein | Mass: 17379.371 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() | ||||||||||||||||||
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#5: Protein | Mass: 273974.250 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() | ||||||||||||||||||
#6: Protein | Mass: 61610.703 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() | ||||||||||||||||||
#10: Protein | Mass: 92406.883 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() | ||||||||||||||||||
#13: Protein | Mass: 100610.008 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() | ||||||||||||||||||
#15: Protein | Mass: 300255.312 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() | ||||||||||||||||||
#17: Protein | Mass: 173331.328 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() | ||||||||||||||||||
#22: Protein | Mass: 24642.131 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #28: Protein | | Mass: 33475.773 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() #29: Protein | | Mass: 73306.172 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() #30: Protein | | Mass: 244823.422 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() #33: Protein | | Mass: 37141.816 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() #34: Protein | | Mass: 17189.625 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() #35: Protein | | Mass: 19925.070 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() #36: Protein | | Mass: 29227.492 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() #37: Protein | | Mass: 46930.961 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() #38: Protein | | Mass: 73679.891 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Pre-mRNA-processing factor ... , 2 types, 5 molecules EGHIJ
#7: Protein | Mass: 65612.180 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#8: Protein | Mass: 55245.547 Da / Num. of mol.: 4 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: Q9UMS4, RING-type E3 ubiquitin transferase |
-Pre-mRNA-splicing factor ... , 7 types, 7 molecules KMNPTrs
#9: Protein | Mass: 26163.420 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#11: Protein | Mass: 100148.711 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#12: Protein | Mass: 28780.518 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#14: Protein | Mass: 46959.555 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#16: Protein | Mass: 105646.578 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#31: Protein | Mass: 140777.688 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#32: Protein | Mass: 33046.254 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-U2 small nuclear ribonucleoprotein ... , 2 types, 2 molecules WX
#18: Protein | Mass: 28484.592 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#19: Protein | Mass: 25524.367 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Small nuclear ribonucleoprotein ... , 6 types, 12 molecules alcndhejfigk
#21: Protein | Mass: 13940.308 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #23: Protein | Mass: 13310.653 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #24: Protein | Mass: 13551.928 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #25: Protein | Mass: 10817.601 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #26: Protein | Mass: 9734.171 Da / Num. of mol.: 2 / Source method: isolated from a natural source Details: MSLPLNPKPFLNGLTGKPVMVKLKWGMEYKGYLVSVDGYMNMQLANTEEYIDGALSGHLGEVLIRCNNVLYIRGVEEEEEDGEMRE Source: (natural) ![]() #27: Protein | Mass: 8508.084 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() |
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-Details
Has protein modification | Y |
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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 |
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Sample preparation
Component | Name: Human C Complex Spliceosome / Type: RIBOSOME / Entity ID: all / Source: NATURAL |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: ![]() |
Buffer solution | pH: 7.9 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE / Humidity: 100 % |
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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: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 6 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON III (4k x 4k) |
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Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3D reconstruction | Resolution: 5 Å / Resolution method: OTHER / Num. of particles: 69000 / Symmetry type: POINT |