[English] 日本語
Yorodumi- EMDB-34500: Cryo-EM structure of human exon-defined spliceosome in the late p... -
+
Open data
-
Basic information
| Entry | ![]() | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Title | Cryo-EM structure of human exon-defined spliceosome in the late pre-B state. | |||||||||
Map data | Author stated: Some sections of the map have very low resolution. For these areas, only the C-alpha model was docked into the density. | |||||||||
Sample |
| |||||||||
Keywords | exon-defined spliceosome / late pre-B state / RNA splicing / SPLICING | |||||||||
| Function / homology | Function and homology informationLsm2-8 complex / U6 snRNA 3'-end binding / spliceosomal snRNP complex / ribonucleoprotein complex localization / U4atac snRNP / positive regulation of cytotoxic T cell differentiation / maturation of 5S rRNA / RNA localization / U4atac snRNA binding / mRNA decay by 5' to 3' exoribonuclease ...Lsm2-8 complex / U6 snRNA 3'-end binding / spliceosomal snRNP complex / ribonucleoprotein complex localization / U4atac snRNP / positive regulation of cytotoxic T cell differentiation / maturation of 5S rRNA / RNA localization / U4atac snRNA binding / mRNA decay by 5' to 3' exoribonuclease / Lsm1-7-Pat1 complex / positive regulation of hippo signaling / R-loop processing / regulation of mitotic cell cycle spindle assembly checkpoint / U6 snRNP / U11/U12 snRNP / box C/D sno(s)RNA binding / PH domain binding / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / dense fibrillar component / histone pre-mRNA 3'end processing complex / cis assembly of pre-catalytic spliceosome / 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 / box C/D methylation guide snoRNP complex / protein methylation / U4/U6 snRNP / 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 / snRNP binding / blastocyst formation / sno(s)RNA-containing ribonucleoprotein complex / splicing factor binding / SMN-Sm protein complex / small nuclear ribonucleoprotein complex / spliceosomal tri-snRNP complex / U4 snRNA binding / P granule / telomerase holoenzyme complex / U2-type precatalytic spliceosome / commitment complex / mRNA cis splicing, via spliceosome / telomerase RNA binding / U2-type spliceosomal complex / U2-type prespliceosome assembly / U2-type catalytic step 2 spliceosome / box C/D snoRNP assembly / SAGA complex / RNA Polymerase II Transcription Termination / P-body assembly / U2 snRNP / U1 snRNP / U4 snRNP / U2-type prespliceosome / rRNA modification in the nucleus and cytosol / U3 snoRNA binding / tRNA processing / positive regulation of transcription by RNA polymerase III / K63-linked polyubiquitin modification-dependent protein binding / precatalytic spliceosome / regulation of RNA splicing / mRNA catabolic process / spliceosomal complex assembly / mRNA Splicing - Minor Pathway / mRNA 3'-splice site recognition / positive regulation of transcription by RNA polymerase I / negative regulation of mRNA splicing, via spliceosome / nuclear-transcribed mRNA catabolic process / MLL1 complex / spliceosomal tri-snRNP complex assembly / U5 snRNA binding / protein deubiquitination / U5 snRNP / U2 snRNA binding / U6 snRNA binding / pre-mRNA intronic binding / single fertilization / Major pathway of rRNA processing in the nucleolus and cytosol / spliceosomal snRNP assembly / ribonucleoprotein complex binding / RNA processing / U1 snRNA binding / Cajal body / regulation of DNA repair / U4/U6 x U5 tri-snRNP complex / catalytic step 2 spliceosome / mRNA Splicing - Major Pathway / Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation / RNA splicing / positive regulation of protein export from nucleus Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.2 Å | |||||||||
Authors | Zhang W / Zhan X / Zhang X / Bai R / Lei J / Yan C / Shi Y | |||||||||
| Funding support | China, 1 items
| |||||||||
Citation | Journal: Cell Res / Year: 2024Title: Structural insights into human exon-defined spliceosome prior to activation. Authors: Wenyu Zhang / Xiaofeng Zhang / Xiechao Zhan / Rui Bai / Jianlin Lei / Chuangye Yan / Yigong Shi / ![]() Abstract: Spliceosome is often assembled across an exon and undergoes rearrangement to span a neighboring intron. Most states of the intron-defined spliceosome have been structurally characterized. However, ...Spliceosome is often assembled across an exon and undergoes rearrangement to span a neighboring intron. Most states of the intron-defined spliceosome have been structurally characterized. However, the structure of a fully assembled exon-defined spliceosome remains at large. During spliceosome assembly, the pre-catalytic state (B complex) is converted from its precursor (pre-B complex). Here we report atomic structures of the exon-defined human spliceosome in four sequential states: mature pre-B, late pre-B, early B, and mature B. In the previously unknown late pre-B state, U1 snRNP is already released but the remaining proteins are still in the pre-B state; unexpectedly, the RNAs are in the B state, with U6 snRNA forming a duplex with 5'-splice site and U5 snRNA recognizing the 3'-end of the exon. In the early and mature B complexes, the B-specific factors are stepwise recruited and specifically recognize the exon 3'-region. Our study reveals key insights into the assembly of the exon-defined spliceosomes and identifies mechanistic steps of the pre-B-to-B transition. | |||||||||
| History |
|
-
Structure visualization
| Supplemental images |
|---|
-
Downloads & links
-EMDB archive
| Map data | emd_34500.map.gz | 483.6 MB | EMDB map data format | |
|---|---|---|---|---|
| Header (meta data) | emd-34500-v30.xml emd-34500.xml | 77.1 KB 77.1 KB | Display Display | EMDB header |
| Images | emd_34500.png | 152.4 KB | ||
| Masks | emd_34500_msk_1.map | 512 MB | Mask map | |
| Filedesc metadata | emd-34500.cif.gz | 21.9 KB | ||
| Others | emd_34500_half_map_1.map.gz emd_34500_half_map_2.map.gz | 475.7 MB 475.7 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-34500 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-34500 | HTTPS FTP |
-Validation report
| Summary document | emd_34500_validation.pdf.gz | 1.1 MB | Display | EMDB validaton report |
|---|---|---|---|---|
| Full document | emd_34500_full_validation.pdf.gz | 1.1 MB | Display | |
| Data in XML | emd_34500_validation.xml.gz | 18.8 KB | Display | |
| Data in CIF | emd_34500_validation.cif.gz | 22.6 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-34500 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-34500 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8h6eMC ![]() 8h6jC ![]() 8h6kC ![]() 8h6lC M: atomic model generated by this map C: citing same article ( |
|---|---|
| Similar structure data | Similarity search - Function & homology F&H Search |
-
Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
|---|---|
| Related items in Molecule of the Month |
-
Map
| File | Download / File: emd_34500.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Annotation | Author stated: Some sections of the map have very low resolution. For these areas, only the C-alpha model was docked into the density. | ||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.1 Å | ||||||||||||||||||||||||||||||||||||
| Density |
| ||||||||||||||||||||||||||||||||||||
| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
|
-Supplemental data
-Mask #1
| File | emd_34500_msk_1.map | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Projections & Slices |
| ||||||||||||
| Density Histograms |
-Half map: #2
| File | emd_34500_half_map_1.map | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Projections & Slices |
| ||||||||||||
| Density Histograms |
-Half map: #1
| File | emd_34500_half_map_2.map | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Projections & Slices |
| ||||||||||||
| Density Histograms |
-
Sample components
+Entire : exon-defined post pre-B spliceosome
+Supramolecule #1: exon-defined post pre-B spliceosome
+Macromolecule #1: pre-mRNA
+Macromolecule #2: U6 snRNA
+Macromolecule #10: U5 snRNA
+Macromolecule #22: U4 snRNA
+Macromolecule #35: U2 snRNA
+Macromolecule #3: U6 snRNA-associated Sm-like protein LSm2
+Macromolecule #4: U6 snRNA-associated Sm-like protein LSm3
+Macromolecule #5: U6 snRNA-associated Sm-like protein LSm4
+Macromolecule #6: U6 snRNA-associated Sm-like protein LSm5
+Macromolecule #7: U6 snRNA-associated Sm-like protein LSm6
+Macromolecule #8: U6 snRNA-associated Sm-like protein LSm7
+Macromolecule #9: U6 snRNA-associated Sm-like protein LSm8
+Macromolecule #11: Pre-mRNA-processing-splicing factor 8
+Macromolecule #12: 116 kDa U5 small nuclear ribonucleoprotein component
+Macromolecule #13: U5 small nuclear ribonucleoprotein 200 kDa helicase
+Macromolecule #14: U5 small nuclear ribonucleoprotein 40 kDa protein
+Macromolecule #15: Isoform SM-B of Small nuclear ribonucleoprotein-associated protei...
+Macromolecule #16: Small nuclear ribonucleoprotein Sm D1
+Macromolecule #17: Small nuclear ribonucleoprotein Sm D2
+Macromolecule #18: Small nuclear ribonucleoprotein F
+Macromolecule #19: Small nuclear ribonucleoprotein E
+Macromolecule #20: Small nuclear ribonucleoprotein G
+Macromolecule #21: Small nuclear ribonucleoprotein Sm D3
+Macromolecule #23: U4/U6 small nuclear ribonucleoprotein Prp3
+Macromolecule #24: U4/U6 small nuclear ribonucleoprotein Prp4
+Macromolecule #25: U4/U6 small nuclear ribonucleoprotein Prp31
+Macromolecule #26: NHP2-like protein 1
+Macromolecule #27: Thioredoxin-like protein 4A
+Macromolecule #28: Pre-mRNA-processing factor 6
+Macromolecule #29: RNA-binding protein 42
+Macromolecule #30: U4/U6.U5 tri-snRNP-associated protein 1
+Macromolecule #31: U4/U6.U5 tri-snRNP-associated protein 2
+Macromolecule #32: Probable ATP-dependent RNA helicase DDX23
+Macromolecule #33: U4/U6.U5 small nuclear ribonucleoprotein 27 kDa protein
+Macromolecule #34: Serine/threonine-protein kinase PRP4 homolog
+Macromolecule #36: U2 small nuclear ribonucleoprotein A'
+Macromolecule #37: U2 small nuclear ribonucleoprotein B''
+Macromolecule #38: Splicing factor 3A subunit 1
+Macromolecule #39: Splicing factor 3A subunit 2
+Macromolecule #40: Splicing factor 3A subunit 3
+Macromolecule #41: Splicing factor 3B subunit 1
+Macromolecule #42: Splicing factor 3B subunit 2
+Macromolecule #43: Splicing factor 3B subunit 3
+Macromolecule #44: Splicing factor 3B subunit 4
+Macromolecule #45: Splicing factor 3B subunit 6
+Macromolecule #46: PHD finger-like domain-containing protein 5A
+Macromolecule #47: Splicing factor 3B subunit 5
+Macromolecule #48: INOSITOL HEXAKISPHOSPHATE
+Macromolecule #49: MAGNESIUM ION
+Macromolecule #50: GUANOSINE-5'-TRIPHOSPHATE
+Macromolecule #51: ZINC ION
-Experimental details
-Structure determination
| Method | cryo EM |
|---|---|
Processing | single particle reconstruction |
| Aggregation state | particle |
-
Sample preparation
| Buffer | pH: 8 |
|---|---|
| Vitrification | Cryogen name: ETHANE |
-
Electron microscopy
| Microscope | FEI TITAN KRIOS |
|---|---|
| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 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: 2.5 µm / Nominal defocus min: 1.0 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
Movie
Controller
About Yorodumi



Keywords
Homo sapiens (human)
Authors
China, 1 items
Citation








































Z (Sec.)
Y (Row.)
X (Col.)














































Processing
FIELD EMISSION GUN

