8B7T

CPSF73 CTD3


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Molecular details of the CPSF73-CPSF100 C-terminal heterodimer and interaction with Symplekin.

Thore, S.Raoelijaona, F.Talenton, V.Fribourg, S.Mackereth, C.D.

(2023) Open Biol 13: 230221-230221

  • DOI: https://doi.org/10.1098/rsob.230221
  • Primary Citation of Related Structures:  
    8B7T, 8BA1

  • PubMed Abstract: 

    Eukaryotic pre-mRNA is processed by a large multiprotein complex to accurately cleave the 3' end, and to catalyse the addition of the poly(A) tail. Within this cleavage and polyadenylation specificity factor (CPSF) machinery, the CPSF73/CPSF3 endonuclease subunit directly contacts both CPSF100/CPSF2 and the scaffold protein Symplekin to form a subcomplex known as the core cleavage complex or mammalian cleavage factor. Here we have taken advantage of a stable CPSF73-CPSF100 minimal heterodimer from Encephalitozoon cuniculi to determine the solution structure formed by the first and second C-terminal domain (CTD1 and CTD2) of both proteins. We find a large number of contacts between both proteins in the complex, and notably in the region between CTD1 and CTD2. A similarity is also observed between CTD2 and the TATA-box binding protein (TBP) domains. Separately, we have determined the structure of the terminal CTD3 domain of CPSF73, which also belongs to the TBP domain family and is connected by a flexible linker to the rest of CPSF73. Biochemical assays demonstrate a key role for the CTD3 of CPSF73 in binding Symplekin, and structural models of the trimeric complex from other species allow for comparative analysis and support an overall conserved architecture.


  • Organizational Affiliation

    Inserm, CNRS, ARNA Laboratory, Univ. Bordeaux, U1212, UMR 5320, 33000 Bordeaux, France.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CPSF7377Encephalitozoon cuniculiMutation(s): 0 
Gene Names: ECU10_0900
UniProt
Find proteins for Q8SUE4 (Encephalitozoon cuniculi (strain GB-M1))
Explore Q8SUE4 
Go to UniProtKB:  Q8SUE4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8SUE4
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2023-05-03
    Type: Initial release
  • Version 1.1: 2023-12-06
    Changes: Data collection, Database references