2NPI

Clp1-ATP-Pcf11 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.250 

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This is version 1.3 of the entry. See complete history


Literature

Structure of a nucleotide-bound Clp1-Pcf11 polyadenylation factor

Noble, C.G.Beuth, B.Taylor, I.A.

(2007) Nucleic Acids Res 35: 87-99

  • DOI: https://doi.org/10.1093/nar/gkl1010
  • Primary Citation of Related Structures:  
    2NPI

  • PubMed Abstract: 

    Pcf11 and Clp1 are subunits of cleavage factor IA (CFIA), an essential polyadenylation factor in Saccahromyces cerevisiae. We have determined the structure of a ternary complex of Clp1 together with ATP and the Clp1-binding region of Pcf11. Clp1 contains three domains, a small N-terminal beta sandwich domain, a C-terminal domain containing a novel alpha/beta-fold and a central domain that binds ATP. The arrangement of the nucleotide binding site is similar to that observed in SIMIBI-class ATPase subunits found in other multisubunit macromolecular complexes. However, despite this similarity, nucleotide hydrolysis does not occur. The Pcf11 binding site is also located in the central domain where three highly conserved residues in Pcf11 mediate many of the protein-protein interactions. We propose that this conserved Clp1-Pcf11 interaction is responsible for maintaining a tight coupling between the Clp1 nucleotide binding subunit and the other components of the polyadenylation machinery. Moreover, we suggest that this complex represents a stabilized ATP bound form of Clp1 that requires the participation of other non-CFIA processing factors in order to initiate timely ATP hydrolysis during 3' end processing.


  • Organizational Affiliation

    Division of Molecular Structure, National Institute for Medical Research, The Ridgeway, Mill Hill, London NW7 1AA, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protein CLP1
A, B
460Saccharomyces cerevisiaeMutation(s): 7 
Gene Names: CLP1
UniProt
Find proteins for Q08685 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q08685 
Go to UniProtKB:  Q08685
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ08685
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Protein PCF11
C, D
110Saccharomyces cerevisiaeMutation(s): 1 
Gene Names: PCF11
UniProt
Find proteins for P39081 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P39081 
Go to UniProtKB:  P39081
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP39081
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.250 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.967α = 90
b = 94.993β = 90
c = 181.404γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
ADSCdata collection
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-12-19
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.3: 2023-12-27
    Changes: Data collection, Database references, Derived calculations