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- PDB-8by6: Structure of the human nuclear cap-binding complex bound to NCBP3... -

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Basic information

Entry
Database: PDB / ID: 8by6
TitleStructure of the human nuclear cap-binding complex bound to NCBP3(560-620) and cap-analogue m7GpppG
Components
  • Nuclear cap-binding protein subunit 1
  • Nuclear cap-binding protein subunit 2
  • Nuclear cap-binding protein subunit 3
KeywordsRNA BINDING PROTEIN / Nuclear cap-binding complex / NCBP3 / Pol II transcript metabolism
Function / homology
Function and homology information


snRNA export from nucleus / nuclear cap binding complex / mRNA metabolic process / RNA cap binding complex / histone mRNA metabolic process / positive regulation of mRNA 3'-end processing / positive regulation of RNA export from nucleus / cap-dependent translational initiation / Processing of Intronless Pre-mRNAs / snRNA binding ...snRNA export from nucleus / nuclear cap binding complex / mRNA metabolic process / RNA cap binding complex / histone mRNA metabolic process / positive regulation of mRNA 3'-end processing / positive regulation of RNA export from nucleus / cap-dependent translational initiation / Processing of Intronless Pre-mRNAs / snRNA binding / positive regulation of RNA binding / RNA cap binding / alternative mRNA splicing, via spliceosome / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / regulation of mRNA processing / primary miRNA processing / regulatory ncRNA-mediated post-transcriptional gene silencing / miRNA-mediated post-transcriptional gene silencing / : / Transport of the SLBP independent Mature mRNA / Transport of the SLBP Dependant Mature mRNA / RNA 7-methylguanosine cap binding / mRNA 3'-end processing / mRNA 3'-end processing / Transport of Mature mRNA Derived from an Intronless Transcript / mRNA cis splicing, via spliceosome / positive regulation of mRNA splicing, via spliceosome / RNA catabolic process / Transport of Mature mRNA derived from an Intron-Containing Transcript / Abortive elongation of HIV-1 transcript in the absence of Tat / FGFR2 alternative splicing / regulation of translational initiation / RNA Polymerase II Transcription Termination / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / Signaling by FGFR2 IIIa TM / spliceosomal complex assembly / Formation of the Early Elongation Complex / Formation of the HIV-1 Early Elongation Complex / mRNA Capping / mRNA Splicing - Minor Pathway / 7-methylguanosine mRNA capping / Processing of Capped Intron-Containing Pre-mRNA / RNA polymerase II transcribes snRNA genes / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Formation of HIV-1 elongation complex containing HIV-1 Tat / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Formation of HIV elongation complex in the absence of HIV Tat / mRNA export from nucleus / Formation of RNA Pol II elongation complex / RNA Polymerase II Pre-transcription Events / mRNA Splicing - Major Pathway / RNA splicing / positive regulation of transcription elongation by RNA polymerase II / mRNA transcription by RNA polymerase II / mRNA splicing, via spliceosome / Regulation of expression of SLITs and ROBOs / snRNP Assembly / positive regulation of cell growth / defense response to virus / molecular adaptor activity / nuclear speck / ribonucleoprotein complex / mRNA binding / mitochondrion / DNA binding / RNA binding / nucleoplasm / nucleus / cytosol / cytoplasm
Similarity search - Function
Nuclear cap-binding protein subunit 3 / Nuclear cap-binding protein subunit 3 / Nuclear cap-binding protein subunit 2 / NCBP2, RNA recognition motif / MIF4G-like, type 1 / MIF4G-like, type 2 / Nuclear cap-binding protein subunit 1 / MIF4G like / MIF4G like / MIF4G domain ...Nuclear cap-binding protein subunit 3 / Nuclear cap-binding protein subunit 3 / Nuclear cap-binding protein subunit 2 / NCBP2, RNA recognition motif / MIF4G-like, type 1 / MIF4G-like, type 2 / Nuclear cap-binding protein subunit 1 / MIF4G like / MIF4G like / MIF4G domain / Middle domain of eukaryotic initiation factor 4G (eIF4G) / MIF4G-like, type 3 / RNA recognition motif / RNA recognition motif / Eukaryotic RNA Recognition Motif (RRM) profile. / RNA recognition motif domain / RNA-binding domain superfamily / Armadillo-type fold / Nucleotide-binding alpha-beta plait domain superfamily
Similarity search - Domain/homology
7-METHYL-GUANOSINE-5'-TRIPHOSPHATE-5'-GUANOSINE / Nuclear cap-binding protein subunit 2 / Nuclear cap-binding protein subunit 1 / Nuclear cap-binding protein subunit 3
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.19 Å
AuthorsDubiez, E. / Pellegrini, E. / Foucher, A.E. / Cusack, S. / Kadlec, J.
Funding support France, 1items
OrganizationGrant numberCountry
Agence Nationale de la Recherche (ANR) France
CitationJournal: Cell Rep / Year: 2024
Title: Structural basis for competitive binding of productive and degradative co-transcriptional effectors to the nuclear cap-binding complex.
Authors: Etienne Dubiez / Erika Pellegrini / Maja Finderup Brask / William Garland / Anne-Emmanuelle Foucher / Karine Huard / Torben Heick Jensen / Stephen Cusack / Jan Kadlec /
Abstract: The nuclear cap-binding complex (CBC) coordinates co-transcriptional maturation, transport, or degradation of nascent RNA polymerase II (Pol II) transcripts. CBC with its partner ARS2 forms mutually ...The nuclear cap-binding complex (CBC) coordinates co-transcriptional maturation, transport, or degradation of nascent RNA polymerase II (Pol II) transcripts. CBC with its partner ARS2 forms mutually exclusive complexes with diverse "effectors" that promote either productive or destructive outcomes. Combining AlphaFold predictions with structural and biochemical validation, we show how effectors NCBP3, NELF-E, ARS2, PHAX, and ZC3H18 form competing binary complexes with CBC and how PHAX, NCBP3, ZC3H18, and other effectors compete for binding to ARS2. In ternary CBC-ARS2 complexes with PHAX, NCBP3, or ZC3H18, ARS2 is responsible for the initial effector recruitment but inhibits their direct binding to the CBC. We show that in vivo ZC3H18 binding to both CBC and ARS2 is required for nuclear RNA degradation. We propose that recruitment of PHAX to CBC-ARS2 can lead, with appropriate cues, to competitive displacement of ARS2 and ZC3H18 from the CBC, thus promoting a productive rather than a degradative RNA fate.
History
DepositionDec 12, 2022Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jan 24, 2024Provider: repository / Type: Initial release
Revision 1.1Jan 31, 2024Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Nuclear cap-binding protein subunit 1
B: Nuclear cap-binding protein subunit 2
C: Nuclear cap-binding protein subunit 3
hetero molecules


Theoretical massNumber of molelcules
Total (without water)115,5044
Polymers114,7013
Non-polymers8031
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area6270 Å2
ΔGint-20 kcal/mol
Surface area40880 Å2

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Components

#1: Protein Nuclear cap-binding protein subunit 1 / 80 kDa nuclear cap-binding protein / CBP80 / NCBP 80 kDa subunit


Mass: 89809.984 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: NCBP1, CBP80, NCBP / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q09161
#2: Protein Nuclear cap-binding protein subunit 2 / 20 kDa nuclear cap-binding protein / Cell proliferation-inducing gene 55 protein / NCBP 20 kDa ...20 kDa nuclear cap-binding protein / Cell proliferation-inducing gene 55 protein / NCBP 20 kDa subunit / CBP20 / NCBP-interacting protein 1 / NIP1


Mass: 18156.260 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: NCBP2, CBP20, PIG55 / Production host: Escherichia coli (E. coli) / References: UniProt: P52298
#3: Protein Nuclear cap-binding protein subunit 3 / Protein ELG


Mass: 6734.328 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: NCBP3, C17orf85 / Production host: Escherichia coli (E. coli) / References: UniProt: Q53F19
#4: Chemical ChemComp-GTG / 7-METHYL-GUANOSINE-5'-TRIPHOSPHATE-5'-GUANOSINE / MRNA CAP ANALOG N7-METHYL GPPPG


Mass: 803.440 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C21H30N10O18P3 / Feature type: SUBJECT OF INVESTIGATION
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: Ternary complex of CBP80, CBP20 and NCBP3 with bound m7GpppG
Type: COMPLEX / Entity ID: #1-#3 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2500 nm / Nominal defocus min: 700 nm
Image recordingElectron dose: 40 e/Å2 / Film or detector model: GATAN K2 QUANTUM (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.20.1_4487: / Classification: refinement
EM software
IDNameVersionCategory
7UCSF Chimeramodel fitting
9cryoSPARC3.3.2initial Euler assignment
10cryoSPARC3.3.2final Euler assignment
13PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.19 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 152563 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0037779
ELECTRON MICROSCOPYf_angle_d0.55210531
ELECTRON MICROSCOPYf_dihedral_angle_d8.9231069
ELECTRON MICROSCOPYf_chiral_restr0.0351147
ELECTRON MICROSCOPYf_plane_restr0.0041344

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