Crystal structure of CstF-50 homodimerization domain

Experimental Data Snapshot

  • Resolution: 1.40 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.201 

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This is version 1.2 of the entry. See complete history


Hexameric Architecture of Cstf Supported by Cstf- 50 Homodimerization Domain Structure.

Moreno-Morcillo, M.Minvielle-Sebastia, L.Mackereth, C.Fribourg, S.

(2011) RNA 17: 412

  • DOI: https://doi.org/10.1261/rna.2481011
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The Cleavage stimulation Factor (CstF) complex is composed of three subunits and is essential for pre-mRNA 3'-end processing. CstF recognizes U and G/U-rich cis-acting RNA sequence elements and helps stabilize the Cleavage and Polyadenylation Specificity Factor (CPSF) at the polyadenylation site as required for productive RNA cleavage. Here, we describe the crystal structure of the N-terminal domain of Drosophila CstF-50 subunit. It forms a compact homodimer that exposes two geometrically opposite, identical, and conserved surfaces that may serve as binding platform. Together with previous data on the structure of CstF-77, homodimerization of CstF-50 N-terminal domain supports the model in which the functional state of CstF is a heterohexamer.

  • Organizational Affiliation

    Institut Européen de Chimie et Biologie, Institut National de la Santé et de la Recherche Médicale (INSERM) U869, Pessac, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CSTF-50, ISOFORM B66Drosophila melanogasterMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.40 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.201 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.23α = 90
b = 52.23β = 90
c = 57.85γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-01-26
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance