3Q2S

Crystal Structure of CFIm68 RRM/CFIm25 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.213 

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:  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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cleavage and polyadenylation specificity factor subunit 5
A, B
207Homo sapiensGene Names: NUDT21 (CFIM25, CPSF25, CPSF5)
Find proteins for O43809 (Homo sapiens)
Go to Gene View: NUDT21
Go to UniProtKB:  O43809
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Cleavage and polyadenylation specificity factor subunit 6
C, D
229Homo sapiensGene Names: CPSF6 (CFIM68)
Find proteins for Q16630 (Homo sapiens)
Go to Gene View: CPSF6
Go to UniProtKB:  Q16630
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.213 
  • Space Group: P 21 3
Unit Cell:
Length (Å)Angle (°)
a = 139.323α = 90.00
b = 139.323β = 90.00
c = 139.323γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
MOLREPphasing
MAR345data collection
DENZOdata reduction
HKL-2000data reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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