+
Open data
-
Basic information
| Entry | Database: PDB / ID: 8c6j | ||||||
|---|---|---|---|---|---|---|---|
| Title | Human spliceosomal PM5 C* complex | ||||||
Components |
| ||||||
Keywords | SPLICING / spliceosome / nucleus | ||||||
| Function / homology | Function and homology informationregulation of homologous chromosome segregation / second spliceosomal transesterification activity / endoplasmic reticulum membrane organization / exon-exon junction subcomplex mago-y14 / negative regulation of selenocysteine incorporation / negative regulation of nitric-oxide synthase activity / cellular response to selenite ion / post-spliceosomal complex / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / exon-exon junction complex ...regulation of homologous chromosome segregation / second spliceosomal transesterification activity / endoplasmic reticulum membrane organization / exon-exon junction subcomplex mago-y14 / negative regulation of selenocysteine incorporation / negative regulation of nitric-oxide synthase activity / cellular response to selenite ion / post-spliceosomal complex / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / exon-exon junction complex / pre-mRNA 3'-splice site binding / selenocysteine insertion sequence binding / negative regulation of catalytic activity / NOSIP mediated eNOS trafficking / regulation of translation at postsynapse, modulating synaptic transmission / protein exit from endoplasmic reticulum / granulocyte differentiation / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / renal system process / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / generation of catalytic spliceosome for first transesterification step / U7 snRNP / 3'-5' RNA helicase activity / Z-decay: degradation of maternal mRNAs by zygotically expressed factors / negative regulation of toll-like receptor signaling pathway / cis assembly of pre-catalytic spliceosome / histone pre-mRNA 3'end processing complex / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / regulation of vitamin D receptor signaling pathway / negative regulation of lipopolysaccharide-mediated signaling pathway / regulation of mRNA processing / 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) / Deadenylation of mRNA / negative regulation of interleukin-8 production / negative regulation of excitatory postsynaptic potential / embryonic cranial skeleton morphogenesis / alternative mRNA splicing, via spliceosome / poly(A) binding / protein methylation / 7-methylguanosine cap hypermethylation / STING mediated induction of host immune responses / U12-type spliceosomal complex / nuclear retinoic acid receptor binding / negative regulation of interferon-beta production / U1 snRNP binding / regulation of mRNA splicing, via spliceosome / pre-mRNA binding / U2-type catalytic step 1 spliceosome / C2H2 zinc finger domain binding / embryonic brain development / methylosome / pICln-Sm protein complex / ATP-dependent activity, acting on RNA / RNA splicing, via transesterification reactions / positive regulation of mRNA splicing, via spliceosome / mRNA 3'-end processing / sno(s)RNA-containing ribonucleoprotein complex / small nuclear ribonucleoprotein complex / M-decay: degradation of maternal mRNAs by maternally stored factors / SMN-Sm protein complex / spliceosomal tri-snRNP complex / P granule / positive regulation of vitamin D receptor signaling pathway / snRNP binding / commitment complex / host-mediated activation of viral transcription / U2-type precatalytic spliceosome / oocyte development / mRNA cis splicing, via spliceosome / regulation of nitric oxide biosynthetic process / telomerase holoenzyme complex / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / positive regulation of alpha-beta T cell differentiation / IRF3-mediated induction of type I IFN / Notch binding / RUNX3 regulates NOTCH signaling / telomerase RNA binding / U2-type prespliceosome assembly / U2-type catalytic step 2 spliceosome / Transport of Mature mRNA derived from an Intron-Containing Transcript / U2-type spliceosomal complex / nuclear vitamin D receptor binding / NOTCH4 Intracellular Domain Regulates Transcription / U1 snRNP / U2 snRNP / : / RNA Polymerase II Transcription Termination / U4 snRNP / NOTCH3 Intracellular Domain Regulates Transcription / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / cGAS/STING signaling pathway / U2-type prespliceosome / negative regulation of type I interferon-mediated signaling pathway / protein peptidyl-prolyl isomerization / inner cell mass cell proliferation Similarity search - Function | ||||||
| Biological species | Homo sapiens (human) | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å | ||||||
Authors | Dybkov, O. / Kastner, B. / Luehrmann, R. | ||||||
| Funding support | Germany, 1items
| ||||||
Citation | Journal: Sci Adv / Year: 2023Title: Regulation of 3' splice site selection after step 1 of splicing by spliceosomal C* proteins. Authors: Olexandr Dybkov / Marco Preußner / Leyla El Ayoubi / Vivi-Yun Feng / Caroline Harnisch / Kilian Merz / Paula Leupold / Peter Yudichev / Dmitry E Agafonov / Cindy L Will / Cyrille Girard / ...Authors: Olexandr Dybkov / Marco Preußner / Leyla El Ayoubi / Vivi-Yun Feng / Caroline Harnisch / Kilian Merz / Paula Leupold / Peter Yudichev / Dmitry E Agafonov / Cindy L Will / Cyrille Girard / Christian Dienemann / Henning Urlaub / Berthold Kastner / Florian Heyd / Reinhard Lührmann / ![]() Abstract: Alternative precursor messenger RNA splicing is instrumental in expanding the proteome of higher eukaryotes, and changes in 3' splice site (3'ss) usage contribute to human disease. We demonstrate by ...Alternative precursor messenger RNA splicing is instrumental in expanding the proteome of higher eukaryotes, and changes in 3' splice site (3'ss) usage contribute to human disease. We demonstrate by small interfering RNA-mediated knockdowns, followed by RNA sequencing, that many proteins first recruited to human C* spliceosomes, which catalyze step 2 of splicing, regulate alternative splicing, including the selection of alternatively spliced NAGNAG 3'ss. Cryo-electron microscopy and protein cross-linking reveal the molecular architecture of these proteins in C* spliceosomes, providing mechanistic and structural insights into how they influence 3'ss usage. They further elucidate the path of the 3' region of the intron, allowing a structure-based model for how the C* spliceosome potentially scans for the proximal 3'ss. By combining biochemical and structural approaches with genome-wide functional analyses, our studies reveal widespread regulation of alternative 3'ss usage after step 1 of splicing and the likely mechanisms whereby C* proteins influence NAGNAG 3'ss choices. | ||||||
| History |
|
-
Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
|---|
-
Downloads & links
-
Download
| PDBx/mmCIF format | 8c6j.cif.gz | 2.9 MB | Display | PDBx/mmCIF format |
|---|---|---|---|---|
| PDB format | pdb8c6j.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 8c6j.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/c6/8c6j ftp://data.pdbj.org/pub/pdb/validation_reports/c6/8c6j | HTTPS FTP |
|---|
-Related structure data
| Related structure data | ![]() 16452MC M: map data used to model this data C: citing same article ( |
|---|---|
| Similar structure data | Similarity search - Function & homology F&H Search |
-
Links
-
Assembly
| Deposited unit | ![]()
|
|---|---|
| 1 |
|
-
Components
+RNA chain , 5 types, 5 molecules 256EI
+Splicing factor ... , 3 types, 3 molecules 4CTF
+Protein , 24 types, 25 molecules 789ACCDCECFCNDGJKLOPRSUVZbkjz
+U5 small nuclear ribonucleoprotein ... , 2 types, 2 molecules BN
+Peptidyl-prolyl cis-trans isomerase-like ... , 2 types, 2 molecules C3i
+Pre-mRNA-splicing factor ... , 7 types, 7 molecules CIHMThsy
+U2 small nuclear ribonucleoprotein ... , 2 types, 2 molecules WY
+Small nuclear ribonucleoprotein ... , 6 types, 12 molecules amcldnepfqgr
+Pre-mRNA-processing factor ... , 2 types, 5 molecules otuvw
+Non-polymers , 6 types, 18 molecules 










+Details
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
|---|---|
| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
| Component | Name: human spliceosomal C* complex assembled on PM5 pre-mRNA Type: COMPLEX / Entity ID: #1-#53 / Source: NATURAL |
|---|---|
| Molecular weight | Experimental value: NO |
| Source (natural) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 7.8 |
| Specimen | Conc.: 0.8 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES Details: 4 microliter sample was applied to a grid. After 15 s, the grid was blotted for 3 s with a blot force of 5 and vitrified by plunging into liquid ethane using FEI Vitrobot Mark IV. |
| Specimen support | Grid material: GOLD / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R2/2 |
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K |
-
Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
|---|---|
| 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 magnification: 81000 X / Nominal defocus max: 3000 nm / Nominal defocus min: 500 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm |
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Image recording | Average exposure time: 1.465 sec. / Electron dose: 44.24 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 14388 |
-
Processing
| EM software |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 1643674 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 1150057 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Atomic model building | 3D fitting-ID: 1
|
Movie
Controller
About Yorodumi




Homo sapiens (human)
Germany, 1items
Citation
PDBj






















































FIELD EMISSION GUN








