7ZGP

Polymerase module of CPF in complex with Mpe1 and a pre-cleaved CYC1 RNA


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Mpe1 senses the binding of pre-mRNA and controls 3' end processing by CPF.

Rodriguez-Molina, J.B.O'Reilly, F.J.Fagarasan, H.Sheekey, E.Maslen, S.Skehel, J.M.Rappsilber, J.Passmore, L.A.

(2022) Mol Cell 82: 2490

  • DOI: 10.1016/j.molcel.2022.04.021
  • Primary Citation of Related Structures:  
    7ZGP, 7ZGQ, 7ZGR

  • PubMed Abstract: 
  • Most eukaryotic messenger RNAs (mRNAs) are processed at their 3' end by the cleavage and polyadenylation specificity factor (CPF/CPSF). CPF mediates the endonucleolytic cleavage of the pre-mRNA and addition of a polyadenosine (poly(A)) tail, which together define the 3' end of the mature transcript ...

    Most eukaryotic messenger RNAs (mRNAs) are processed at their 3' end by the cleavage and polyadenylation specificity factor (CPF/CPSF). CPF mediates the endonucleolytic cleavage of the pre-mRNA and addition of a polyadenosine (poly(A)) tail, which together define the 3' end of the mature transcript. The activation of CPF is highly regulated to maintain the fidelity of RNA processing. Here, using cryo-EM of yeast CPF, we show that the Mpe1 subunit directly contacts the polyadenylation signal sequence in nascent pre-mRNA. The region of Mpe1 that contacts RNA also promotes the activation of CPF endonuclease activity and controls polyadenylation. The Cft2 subunit of CPF antagonizes the RNA-stabilized configuration of Mpe1. In vivo, the depletion or mutation of Mpe1 leads to widespread defects in transcription termination by RNA polymerase II, resulting in transcription interference on neighboring genes. Together, our data suggest that Mpe1 plays a major role in accurate 3' end processing, activating CPF, and ensuring timely transcription termination.


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK. Electronic address: passmore@mrc-lmb.cam.ac.uk.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein CFT1A1,357Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: CFT1YHH1YDR301W
UniProt
Find proteins for Q06632 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  Q06632
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UniProt GroupQ06632
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
mRNA 3'-end-processing protein YTH1B208Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: YTH1GI527_G0006153
UniProt
Find proteins for A0A6A5Q2R8 (Saccharomyces cerevisiae)
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UniProt GroupA0A6A5Q2R8
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Polyadenylation factor subunit 2C [auth D]465Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: PFS2GI527_G0004795
UniProt
Find proteins for A0A6A5Q543 (Saccharomyces cerevisiae)
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UniProt GroupA0A6A5Q543
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
MPE1 isoform 1E [auth F]441Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MPE1GI527_G0003582
UniProt
Find proteins for A0A6A5PV64 (Saccharomyces cerevisiae)
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UniProt GroupA0A6A5PV64
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Entity ID: 4
MoleculeChainsLengthOrganismImage
pre-cleaved CYC1D [auth E]42Saccharomyces cerevisiae
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Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
F [auth B],
G [auth B]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Research Council (ERC)European Union725685
Medical Research Council (MRC, United Kingdom)United KingdomMC_U105192715

Revision History  (Full details and data files)

  • Version 1.0: 2022-05-25
    Type: Initial release
  • Version 1.1: 2022-06-01
    Changes: Database references
  • Version 1.2: 2022-07-20
    Changes: Database references