3Q2S

Crystal Structure of CFIm68 RRM/CFIm25 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal Structure of a Human Cleavage Factor CFI(m)25/CFI(m)68/RNA Complex Provides an Insight into Poly(A) Site Recognition and RNA Looping.

Yang, Q.Coseno, M.Gilmartin, G.M.Doublie, S.

(2011) Structure 19: 368-377

  • DOI: 10.1016/j.str.2010.12.021
  • Primary Citation of Related Structures:  
    3Q2S, 3Q2T

  • PubMed Abstract: 
  • Cleavage factor I(m) (CFI(m)) is a highly conserved component of the eukaryotic mRNA 3' processing machinery that functions in sequence-specific poly(A) site recognition through the collaboration of a 25 kDa subunit containing a Nudix domain and a la ...

    Cleavage factor I(m) (CFI(m)) is a highly conserved component of the eukaryotic mRNA 3' processing machinery that functions in sequence-specific poly(A) site recognition through the collaboration of a 25 kDa subunit containing a Nudix domain and a larger subunit of 59, 68, or 72 kDa containing an RNA recognition motif (RRM). Our previous work demonstrated that CFI(m)25 is both necessary and sufficient for sequence-specific binding of the poly(A) site upstream element UGUA. Here, we report the crystal structure of CFI(m)25 complexed with the RRM domain of CFI(m)68 and RNA. The CFI(m)25 dimer is clasped on opposite sides by two CFI(m)68 RRM domains. Each CFI(m)25 subunit binds one UGUA element specifically. Biochemical analysis indicates that the CFI(m)68 RRMs serve to enhance RNA binding and facilitate RNA looping. The intrinsic ability of CFI(m) to direct RNA looping may provide a mechanism for its function in the regulation of alternative poly(A) site selection.


    Organizational Affiliation

    Department of Microbiology and Molecular Genetics, University of Vermont, Stafford Hall, Burlington, VT 05405, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Cleavage and polyadenylation specificity factor subunit 6CD229Homo sapiensMutation(s): 1 
Gene Names: CFIM68CPSF6
Find proteins for Q16630 (Homo sapiens)
Explore Q16630 
Go to UniProtKB:  Q16630
NIH Common Fund Data Resources
PHAROS  Q16630
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cleavage and polyadenylation specificity factor subunit 5AB207Homo sapiensMutation(s): 0 
Gene Names: CFIM25CPSF25CPSF5NUDT21or CPSF5
Find proteins for O43809 (Homo sapiens)
Explore O43809 
Go to UniProtKB:  O43809
NIH Common Fund Data Resources
PHAROS  O43809
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.215 
  • Space Group: P 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 139.323α = 90
b = 139.323β = 90
c = 139.323γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
MAR345data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-02-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-11-08
    Changes: Advisory, Refinement description