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- PDB-8q91: Structure of the human 20S U5 snRNP core -

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Entry
Database: PDB / ID: 8q91
TitleStructure of the human 20S U5 snRNP core
Components
  • (Small nuclear ribonucleoprotein ...SnRNP) x 6
  • 116 kDa U5 small nuclear ribonucleoprotein component
  • CD2 antigen cytoplasmic tail-binding protein 2
  • Pre-mRNA-processing factor 6
  • Pre-mRNA-processing-splicing factor 8
  • Probable ATP-dependent RNA helicase DDX23
  • Small nuclear ribonucleoprotein-associated proteins B and B'
  • U5 small nuclear ribonucleoprotein 200 kDa helicase
  • U5 snRNAU5 spliceosomal RNA
KeywordsSPLICING / snRNP / CD2BP2 / spliceosome / U5
Function / homology
Function and homology information


R-loop processing / RNA localization / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / 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 ...R-loop processing / RNA localization / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / 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) / protein methylation / U12-type spliceosomal complex / methylosome / 7-methylguanosine cap hypermethylation / U2-type catalytic step 1 spliceosome / pICln-Sm protein complex / U1 snRNP binding / RNA splicing, via transesterification reactions / spliceosomal tri-snRNP complex / small nuclear ribonucleoprotein complex / P granule / SMN-Sm protein complex / U2-type spliceosomal complex / telomerase RNA binding / telomerase holoenzyme complex / U2-type precatalytic spliceosome / U2-type prespliceosome assembly / commitment complex / U2-type catalytic step 2 spliceosome / U4 snRNP / U2 snRNP / RNA Polymerase II Transcription Termination / U1 snRNP / U2-type prespliceosome / K63-linked polyubiquitin modification-dependent protein binding / precatalytic spliceosome / spliceosomal complex assembly / mRNA Splicing - Minor Pathway / spliceosomal tri-snRNP complex assembly / U5 snRNA binding / U5 snRNP / Cajal body / U2 snRNA binding / spliceosomal snRNP assembly / U6 snRNA binding / ribonucleoprotein complex binding / pre-mRNA intronic binding / U1 snRNA binding / U4/U6 x U5 tri-snRNP complex / catalytic step 2 spliceosome / mRNA Splicing - Major Pathway / RNA splicing / response to cocaine / helicase activity / spliceosomal complex / mRNA splicing, via spliceosome / fibrillar center / mRNA processing / osteoblast differentiation / cellular response to xenobiotic stimulus / cellular response to tumor necrosis factor / snRNP Assembly / SARS-CoV-2 modulates host translation machinery / cellular response to lipopolysaccharide / RNA helicase activity / nuclear body / RNA helicase / nuclear speck / intracellular membrane-bounded organelle / GTPase activity / chromatin / GTP binding / nucleolus / enzyme binding / ATP hydrolysis activity / positive regulation of transcription by RNA polymerase II / RNA binding / extracellular exosome / nucleoplasm / ATP binding / membrane / identical protein binding / nucleus / cytosol / cytoplasm
Similarity search - Function
CD2 antigen cytoplasmic tail-binding protein 2/Lin1 / GYF domain / GYF-like domain superfamily / GYF domain / GYF domain profile. / Contains conserved Gly-Tyr-Phe residues / PRP1 splicing factor, N-terminal / PRP1 splicing factor, N-terminal / Small ribonucleoprotein associated, SmB/SmN / Small nuclear ribonucleoprotein D1 ...CD2 antigen cytoplasmic tail-binding protein 2/Lin1 / GYF domain / GYF-like domain superfamily / GYF domain / GYF domain profile. / Contains conserved Gly-Tyr-Phe residues / PRP1 splicing factor, N-terminal / PRP1 splicing factor, N-terminal / Small ribonucleoprotein associated, SmB/SmN / Small nuclear ribonucleoprotein D1 / Pre-mRNA-splicing factor Syf1-like / Brr2, N-terminal helicase PWI domain / : / N-terminal helicase PWI domain / Pre-mRNA-splicing helicase BRR2 plug domain / Snu114, GTP-binding domain / Tetratricopeptide repeat / Sec63 Brl domain / 116kDa U5 small nuclear ribonucleoprotein component, N-terminal / 116kDa U5 small nuclear ribonucleoprotein component, C-terminal / 116 kDa U5 small nuclear ribonucleoprotein component N-terminus / Small nuclear ribonucleoprotein Sm D3 / Sec63 domain / Sec63 Brl domain / Small nuclear ribonucleoprotein Sm D2 / Small nuclear ribonucleoprotein E / Small nuclear ribonucleoprotein G / Small nuclear ribonucleoprotein F / Sm-like protein Lsm7/SmG / Like-Sm (LSM) domain containing protein, LSm4/SmD1/SmD3 / Sm-like protein Lsm6/SmF / LSM domain / LSM domain, eukaryotic/archaea-type / snRNP Sm proteins / Tetratricopeptide repeat / HAT (Half-A-TPR) repeat / HAT (Half-A-TPR) repeats / : / DEAD-box subfamily ATP-dependent helicases signature. / Sm domain profile. / ATP-dependent RNA helicase DEAD-box, conserved site / RNA helicase, DEAD-box type, Q motif / Elongation Factor G, domain II / Elongation Factor G, domain III / DEAD-box RNA helicase Q motif profile. / Translation elongation factor EFG/EF2, domain IV / JAB1/Mov34/MPN/PAD-1 ubiquitin protease / Elongation factor G, domain IV / Elongation factor G, domain IV / LSM domain superfamily / Elongation factor G C-terminus / Elongation factor EFG, domain V-like / Elongation factor G C-terminus / EF-G domain III/V-like / PROCT domain / Prp8 RNase domain IV, fingers region / PROCT (NUC072) domain / PRO8NT domain / PROCN domain / Pre-mRNA-processing-splicing factor 8, U6-snRNA-binding / Pre-mRNA-processing-splicing factor 8, U5-snRNA-binding / RNA recognition motif, spliceosomal PrP8 / PRP8 domain IV core / Pre-mRNA-processing-splicing factor 8, U5-snRNA-binding domain superfamily / Prp8 RNase domain IV, palm region / PRO8NT (NUC069), PrP8 N-terminal domain / PROCN (NUC071) domain / U6-snRNA interacting domain of PrP8 / U5-snRNA binding site 2 of PrP8 / RNA recognition motif of the spliceosomal PrP8 / PRP8 domain IV core / Pre-mRNA-processing-splicing factor 8 / Translation elongation factor EFTu-like, domain 2 / Elongation factor Tu domain 2 / JAB/MPN domain / JAB1/MPN/MOV34 metalloenzyme domain / MPN domain / MPN domain profile. / DEAD/DEAH box helicase / DEAD/DEAH box helicase domain / Tetratricopeptide repeats / Translational (tr)-type GTP-binding domain / Elongation factor Tu GTP binding domain / Translational (tr)-type guanine nucleotide-binding (G) domain profile. / C2 domain superfamily / Tetratricopeptide repeat / Helicase conserved C-terminal domain / helicase superfamily c-terminal domain / Tetratricopeptide-like helical domain superfamily / Small GTP-binding protein domain / Immunoglobulin E-set / Superfamilies 1 and 2 helicase C-terminal domain profile. / Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile. / DEAD-like helicases superfamily / Helicase, C-terminal / Helicase superfamily 1/2, ATP-binding domain / Translation protein, beta-barrel domain superfamily / Ribosomal protein S5 domain 2-type fold, subgroup / Winged helix DNA-binding domain superfamily / Ribonuclease H-like superfamily
Similarity search - Domain/homology
GUANOSINE-5'-TRIPHOSPHATE / : / RNA / RNA (> 10) / RNA (> 100) / U5 small nuclear ribonucleoprotein 200 kDa helicase / Pre-mRNA-processing factor 6 / CD2 antigen cytoplasmic tail-binding protein 2 / Small nuclear ribonucleoprotein-associated proteins B and B' / Small nuclear ribonucleoprotein E ...GUANOSINE-5'-TRIPHOSPHATE / : / RNA / RNA (> 10) / RNA (> 100) / U5 small nuclear ribonucleoprotein 200 kDa helicase / Pre-mRNA-processing factor 6 / CD2 antigen cytoplasmic tail-binding protein 2 / Small nuclear ribonucleoprotein-associated proteins B and B' / Small nuclear ribonucleoprotein E / Small nuclear ribonucleoprotein F / Small nuclear ribonucleoprotein G / Small nuclear ribonucleoprotein Sm D1 / Small nuclear ribonucleoprotein Sm D2 / Small nuclear ribonucleoprotein Sm D3 / 116 kDa U5 small nuclear ribonucleoprotein component / Pre-mRNA-processing-splicing factor 8 / Probable ATP-dependent RNA helicase DDX23
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsSchneider, S. / Galej, W.P.
Funding supportEuropean Union, 1items
OrganizationGrant numberCountry
European Research Council (ERC)950278European Union
CitationJournal: Nat Struct Mol Biol / Year: 2024
Title: Structure of the human 20S U5 snRNP.
Authors: Sarah Schneider / Irina Brandina / Daniel Peter / Sonal Lagad / Angelique Fraudeau / Júlia Portell-Montserrat / Jonas Tholen / Jiangfeng Zhao / Wojciech P Galej /
Abstract: The 20S U5 small nuclear ribonucleoprotein particle (snRNP) is a 17-subunit RNA-protein complex and a precursor of the U4/U6.U5 tri-snRNP, the major building block of the precatalytic spliceosome. ...The 20S U5 small nuclear ribonucleoprotein particle (snRNP) is a 17-subunit RNA-protein complex and a precursor of the U4/U6.U5 tri-snRNP, the major building block of the precatalytic spliceosome. CD2BP2 is a hallmark protein of the 20S U5 snRNP, absent from the mature tri-snRNP. Here we report a high-resolution cryogenic electron microscopy structure of the 20S U5 snRNP, shedding light on the mutually exclusive interfaces utilized during tri-snRNP assembly and the role of the CD2BP2 in facilitating this process.
History
DepositionAug 19, 2023Deposition site: PDBE / Processing site: PDBE
Revision 1.0Mar 27, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
F: CD2 antigen cytoplasmic tail-binding protein 2
A: Pre-mRNA-processing-splicing factor 8
5: U5 snRNA
E: Pre-mRNA-processing factor 6
D: Probable ATP-dependent RNA helicase DDX23
C: 116 kDa U5 small nuclear ribonucleoprotein component
B: U5 small nuclear ribonucleoprotein 200 kDa helicase
m: Small nuclear ribonucleoprotein F
n: Small nuclear ribonucleoprotein G
i: Small nuclear ribonucleoprotein Sm D1
j: Small nuclear ribonucleoprotein Sm D2
k: Small nuclear ribonucleoprotein Sm D3
h: Small nuclear ribonucleoprotein-associated proteins B and B'
l: Small nuclear ribonucleoprotein E
hetero molecules


Theoretical massNumber of molelcules
Total (without water)1,001,20615
Polymers1,000,68314
Non-polymers5231
Water0
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 7 types, 7 molecules FAEDCBh

#1: Protein CD2 antigen cytoplasmic tail-binding protein 2


Mass: 37687.355 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CD2BP2 / Production host: Homo sapiens (human) / References: UniProt: O95400
#2: Protein Pre-mRNA-processing-splicing factor 8 / 220 kDa U5 snRNP-specific protein / PRP8 homolog / Splicing factor Prp8 / p220


Mass: 273974.250 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PRPF8, PRPC8 / Production host: Homo sapiens (human) / References: UniProt: Q6P2Q9
#4: Protein Pre-mRNA-processing factor 6


Mass: 107092.242 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PRPF6 / Production host: Homo sapiens (human) / References: UniProt: O94906
#5: Protein Probable ATP-dependent RNA helicase DDX23


Mass: 95785.148 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: DDX23 / Production host: Homo sapiens (human) / References: UniProt: Q9BUQ8
#6: Protein 116 kDa U5 small nuclear ribonucleoprotein component / Elongation factor Tu GTP-binding domain-containing protein 2 / SNU114 homolog / hSNU114 / U5 snRNP- ...Elongation factor Tu GTP-binding domain-containing protein 2 / SNU114 homolog / hSNU114 / U5 snRNP-specific protein / 116 kDa / U5-116 kDa


Mass: 109560.625 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: EFTUD2, KIAA0031, SNRP116 / Production host: Homo sapiens (human) / References: UniProt: Q15029
#7: Protein U5 small nuclear ribonucleoprotein 200 kDa helicase / Activating signal cointegrator 1 complex subunit 3-like 1 / BRR2 homolog / U5 snRNP-specific 200 ...Activating signal cointegrator 1 complex subunit 3-like 1 / BRR2 homolog / U5 snRNP-specific 200 kDa protein / U5-200KD


Mass: 244823.422 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SNRNP200, ASCC3L1, HELIC2, KIAA0788 / Production host: Homo sapiens (human) / References: UniProt: O75643, RNA helicase
#13: Protein Small nuclear ribonucleoprotein-associated proteins B and B' / snRNP-B / Sm protein B/B' / SmB/B'


Mass: 24642.131 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SNRPB, COD, SNRPB1 / Production host: Homo sapiens (human) / References: UniProt: P14678

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Small nuclear ribonucleoprotein ... , 6 types, 6 molecules mnijkl

#8: Protein Small nuclear ribonucleoprotein F / snRNP-F / Sm protein F / SmF


Mass: 9734.171 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SNRPF, PBSCF / Production host: Homo sapiens (human) / References: UniProt: P62306
#9: Protein Small nuclear ribonucleoprotein G / snRNP-G / Sm protein G / SmG


Mass: 8508.084 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SNRPG, PBSCG / Production host: Homo sapiens (human) / References: UniProt: P62308
#10: Protein Small nuclear ribonucleoprotein Sm D1 / Sm-D1 / Sm-D autoantigen / snRNP core protein D1


Mass: 13310.653 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SNRPD1 / Production host: Homo sapiens (human) / References: UniProt: P62314
#11: Protein Small nuclear ribonucleoprotein Sm D2 / Sm-D2 / snRNP core protein D2


Mass: 13551.928 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SNRPD2, SNRPD1 / Production host: Homo sapiens (human) / References: UniProt: P62316
#12: Protein Small nuclear ribonucleoprotein Sm D3 / Sm-D3 / snRNP core protein D3


Mass: 13940.308 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SNRPD3 / Production host: Homo sapiens (human) / References: UniProt: P62318
#14: Protein Small nuclear ribonucleoprotein E / snRNP-E / Sm protein E / SmE


Mass: 10817.601 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SNRPE / Production host: Homo sapiens (human) / References: UniProt: P62304

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RNA chain / Non-polymers , 2 types, 2 molecules 5

#15: Chemical ChemComp-GTP / GUANOSINE-5'-TRIPHOSPHATE / Guanosine triphosphate


Mass: 523.180 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N5O14P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: GTP, energy-carrying molecule*YM
#3: RNA chain U5 snRNA / U5 spliceosomal RNA


Mass: 37254.855 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human) / References: GenBank: 20330981

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Details

Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: 20S U5 snRNP complex purified from HEK293F cell line / Type: COMPLEX / Entity ID: #1-#14 / Source: NATURAL
Molecular weightValue: 1 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS / Details: objective aperture 70um
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 130000 X / Nominal defocus max: 3500 nm / Nominal defocus min: 1500 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 5.2 sec. / Electron dose: 40.5 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 8506
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV
Image scansMovie frames/image: 40

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Processing

EM software
IDNameVersionCategory
1cryoSPARCparticle selection
2SerialEMimage acquisition
4cryoSPARCCTF correction
10cryoSPARCinitial Euler assignment
11cryoSPARC3.3final Euler assignment
13cryoSPARC3.33D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 503581
3D reconstructionResolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 76918 / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00429516
ELECTRON MICROSCOPYf_angle_d0.66540503
ELECTRON MICROSCOPYf_dihedral_angle_d12.2224880
ELECTRON MICROSCOPYf_chiral_restr0.0644593
ELECTRON MICROSCOPYf_plane_restr0.0054807

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