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Yorodumi- EMDB-6889: cryo-EM structure of a human activated spliceosome (mature Bact) ... -
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Basic information
| Entry | Database: EMDB / ID: EMD-6889 | ||||||||||||
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| Title | cryo-EM structure of a human activated spliceosome (mature Bact) at 5.1 angstrom. | ||||||||||||
Map data | Cryo-EM structure of the human activated spliceosome (mature Bact) at 5.1 angstrom resolution | ||||||||||||
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Keywords | human activated spliceosome / mature Bact / pre-mRNA splicing / SPLICING | ||||||||||||
| Function / homology | Function and homology informationRES complex / negative regulation of chemokine-mediated signaling pathway / snoRNA splicing / U11/U12 snRNP / post-mRNA release spliceosomal complex / 3'-5' RNA helicase activity / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / generation of catalytic spliceosome for first transesterification step ...RES complex / negative regulation of chemokine-mediated signaling pathway / snoRNA splicing / U11/U12 snRNP / post-mRNA release spliceosomal complex / 3'-5' RNA helicase activity / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / generation of catalytic spliceosome for first transesterification step / U7 snRNP / cis assembly of pre-catalytic spliceosome / histone pre-mRNA 3'end processing complex / 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 / embryonic brain development / oocyte development / protein methylation / alternative mRNA splicing, via spliceosome / U12-type spliceosomal complex / poly(A) binding / 7-methylguanosine cap hypermethylation / U1 snRNP binding / U2-type catalytic step 1 spliceosome / RNA splicing, via transesterification reactions / methylosome / pre-mRNA binding / C2H2 zinc finger domain binding / pICln-Sm protein complex / positive regulation of mRNA splicing, via spliceosome / regulation of mRNA splicing, via spliceosome / snRNP binding / mRNA 3'-end processing / sno(s)RNA-containing ribonucleoprotein complex / blastocyst formation / small nuclear ribonucleoprotein complex / splicing factor binding / SMN-Sm protein complex / spliceosomal tri-snRNP complex / mRNA cis splicing, via spliceosome / U2-type precatalytic spliceosome / P granule / commitment complex / telomerase holoenzyme complex / U2-type prespliceosome assembly / U2-type spliceosomal complex / Transport of Mature mRNA derived from an Intron-Containing Transcript / telomerase RNA binding / U2-type catalytic step 2 spliceosome / SAGA complex / U2 snRNP / U1 snRNP / RNA Polymerase II Transcription Termination / U4 snRNP / U2-type prespliceosome / positive regulation of transcription by RNA polymerase III / protein peptidyl-prolyl isomerization / inner cell mass cell proliferation / K63-linked polyubiquitin modification-dependent protein binding / ubiquitin-ubiquitin ligase activity / cyclosporin A binding / precatalytic spliceosome / WD40-repeat domain binding / lipid biosynthetic process / pattern recognition receptor activity / regulation of RNA splicing / spliceosomal complex assembly / mRNA 3'-splice site recognition / positive regulation of transcription by RNA polymerase I / mRNA Splicing - Minor Pathway / spliceosomal tri-snRNP complex assembly / Prp19 complex / U5 snRNA binding / U5 snRNP / blastocyst development / protein K63-linked ubiquitination / U2 snRNA binding / positive regulation of G1/S transition of mitotic cell cycle / U6 snRNA binding / pre-mRNA intronic binding / protein localization to nucleus / spliceosomal snRNP assembly / U1 snRNA binding / RNA processing / Cajal body / regulation of DNA repair / positive regulation of viral genome replication / transcription regulator inhibitor activity / ovarian follicle development / U4/U6 x U5 tri-snRNP complex / proteasomal protein catabolic process / spindle assembly / catalytic step 2 spliceosome / lipid droplet / transcription-coupled nucleotide-excision repair / mRNA Splicing - Major Pathway / antiviral innate immune response Similarity search - Function | ||||||||||||
| Biological species | Homo sapiens (human) / unidentified adenovirus | ||||||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 5.1 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_6889.map.gz | 228.5 MB | EMDB map data format | |
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| Header (meta data) | emd-6889-v30.xml emd-6889.xml | 83 KB 83 KB | Display Display | EMDB header |
| Images | emd_6889.png | 171.8 KB | ||
| Filedesc metadata | emd-6889.cif.gz | 25 KB | ||
| Others | emd_6889_additional.map.gz | 59.6 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-6889 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-6889 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 5z56MC ![]() 6890C ![]() 6891C ![]() 5z57C ![]() 5z58C 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_6889.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 (mature Bact) at 5.1 angstrom resolution | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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
-Additional map: local map for SF3b region of the human...
| File | emd_6889_additional.map | ||||||||||||
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| Annotation | local map for SF3b region of the human activated spliceosome at 4.2 angstrom resolution | ||||||||||||
| Projections & Slices |
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| Density Histograms |
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Sample components
+Entire : human activated spliceosome
+Supramolecule #1: human activated 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: Pre-mRNA-processing factor 19
+Macromolecule #31: Pre-mRNA-splicing factor SPF27
+Macromolecule #32: Pre-mRNA-splicing factor SYF1
+Macromolecule #33: Intron-binding protein aquarius
+Macromolecule #34: RING finger protein 113A
+Macromolecule #35: Protein BUD31 homolog
+Macromolecule #36: Pre-mRNA-splicing factor RBM22
+Macromolecule #37: Spliceosome-associated protein CWC15 homolog
+Macromolecule #38: Skip
+Macromolecule #39: Peptidyl-prolyl cis-trans isomerase-like 1
+Macromolecule #40: Pleiotropic regulator 1
+Macromolecule #41: Serine/arginine repetitive matrix protein 2
+Macromolecule #42: Pre-mRNA-splicing factor CWC22 homolog
+Macromolecule #43: Pre-mRNA-processing factor 17
+Macromolecule #44: Smad nuclear-interacting protein 1
+Macromolecule #45: RNA-binding motif protein, X-linked 2
+Macromolecule #46: BUD13 homolog
+Macromolecule #47: Peptidyl-prolyl cis-trans isomerase CWC27 homolog
+Macromolecule #48: Putative pre-mRNA-splicing factor ATP-dependent RNA helicase DHX16
+Macromolecule #49: Peptidyl-prolyl cis-trans isomerase E
+Macromolecule #2: U5 snRNA
+Macromolecule #13: U6 snRNA
+Macromolecule #14: pre-mRNA
+Macromolecule #15: U2 snRNA
+Macromolecule #50: INOSITOL HEXAKISPHOSPHATE
+Macromolecule #51: GUANOSINE-5'-TRIPHOSPHATE
+Macromolecule #52: MAGNESIUM ION
+Macromolecule #53: 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, 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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