6B3X

Crystal structure of CstF-50 in complex with CstF-77

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.217 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history. 


Literature

Reconstitution of the CstF complex unveils a regulatory role for CstF-50 in recognition of 3'-end processing signals.

Yang, W., Hsu, P.L., Yang, F., Song, J.E., Varani, G.

(2018) Nucleic Acids Res 46: 493-503

  • DOI: 10.1093/nar/gkx1177
  • Primary Citation of Related Structures:  
    6B3X

  • PubMed Abstract: 

    • Cleavage stimulation factor (CstF) is a highly conserved protein complex composed of three subunits that recognizes G/U-rich sequences downstream of the polyadenylation signal of eukaryotic mRNAs. While CstF has been identified over 25 years ago, the architecture and contribution of each subunit to RNA recognition have not been fully understood ...

    Cleavage stimulation factor (CstF) is a highly conserved protein complex composed of three subunits that recognizes G/U-rich sequences downstream of the polyadenylation signal of eukaryotic mRNAs. While CstF has been identified over 25 years ago, the architecture and contribution of each subunit to RNA recognition have not been fully understood. In this study, we provide a structural basis for the recruitment of CstF-50 to CstF via interaction with CstF-77 and establish that the hexameric assembly of CstF creates a high affinity platform to target various G/U-rich sequences. We further demonstrate that CstF-77 boosts the affinity of the CstF-64 RRM to the RNA targets and CstF-50 fine tunes the ability of the complex to recognize G/U sequences of certain lengths and content.

    Organizational Affiliation: 

    Department of Chemistry, University of Washington, Seattle, WA 98195-1700, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cleavage stimulation factor subunit 1A358Homo sapiensMutation(s): 0 
Gene Names: CSTF1
UniProt & NIH Common Fund Data Resources
Find proteins for Q05048 (Homo sapiens)
Explore Q05048 
Go to UniProtKB:  Q05048
PHAROS:  Q05048
GTEx:  ENSG00000101138
Protein Feature View
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Cleavage stimulation factor subunit 3B20Homo sapiensMutation(s): 0 
Gene Names: CSTF3
UniProt & NIH Common Fund Data Resources
Find proteins for Q12996 (Homo sapiens)
Explore Q12996 
Go to UniProtKB:  Q12996
PHAROS:  Q12996
GTEx:  ENSG00000176102
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.217 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.863α = 90
b = 74.491β = 90
c = 95.105γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
MR-Rosettaphasing

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM064440

Revision History  (Full details and data files)

  • Version 1.0: 2017-11-29
    Type: Initial release
  • Version 1.1: 2017-12-06
    Changes: Author supporting evidence
  • Version 1.2: 2017-12-13
    Changes: Database references
  • Version 1.3: 2018-02-07
    Changes: Database references
  • Version 1.4: 2020-01-01
    Changes: Author supporting evidence