4CT4

CNOT1 MIF4G domain - DDX6 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.166 
  • R-Value Observed: 0.169 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural and Biochemical Insights to the Role of the Ccr4- not Complex and Ddx6 ATPase in Microrna Repression.

Mathys, H.Basquin, J.Ozgur, S.Czarnocki-Cieciura, M.Bonneau, F.Aartse, A.Dziembowski, A.Nowotny, M.Conti, E.Filipowicz, W.

(2014) Mol Cell 54: 751

  • DOI: 10.1016/j.molcel.2014.03.036
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • MicroRNAs (miRNAs) control gene expression by regulating mRNA translation and stability. The CCR4-NOT complex is a key effector of miRNA function acting downstream of GW182/TNRC6 proteins. We show that miRNA-mediated repression requires the central r ...

    MicroRNAs (miRNAs) control gene expression by regulating mRNA translation and stability. The CCR4-NOT complex is a key effector of miRNA function acting downstream of GW182/TNRC6 proteins. We show that miRNA-mediated repression requires the central region of CNOT1, the scaffold protein of CCR4-NOT. A CNOT1 domain interacts with CNOT9, which in turn interacts with the silencing domain of TNRC6 in a tryptophan motif-dependent manner. These interactions are direct, as shown by the structure of a CNOT9-CNOT1 complex with bound tryptophan. Another domain of CNOT1 with an MIF4G fold recruits the DEAD-box ATPase DDX6, a known translational inhibitor. Structural and biochemical approaches revealed that CNOT1 modulates the conformation of DDX6 and stimulates ATPase activity. Structure-based mutations showed that the CNOT1 MIF4G-DDX6 interaction is important for miRNA-mediated repression. These findings provide insights into the repressive steps downstream of the GW182/TNRC6 proteins and the role of the CCR4-NOT complex in posttranscriptional regulation in general.


    Organizational Affiliation

    Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland; University of Basel, 4003 Basel, Switzerland. Electronic address: witold.filipowicz@fmi.ch.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CCR4-NOT TRANSCRIPTION COMPLEX SUBUNIT 1A, C258Homo sapiensMutation(s): 0 
Gene Names: CNOT1CDC39KIAA1007NOT1AD-005
Find proteins for A5YKK6 (Homo sapiens)
Explore A5YKK6 
Go to UniProtKB:  A5YKK6
NIH Common Fund Data Resources
PHAROS  A5YKK6
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROBABLE ATP-DEPENDENT RNA HELICASE DDX6B, D378Homo sapiensMutation(s): 0 
Gene Names: DDX6HLR2RCK
EC: 3.6.4.13
Find proteins for P26196 (Homo sapiens)
Explore P26196 
Go to UniProtKB:  P26196
NIH Common Fund Data Resources
PHAROS  P26196
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download CCD File 
D
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
MG
Query on MG

Download CCD File 
B, D
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.166 
  • R-Value Observed: 0.169 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.531α = 90
b = 120.014β = 104.01
c = 78.469γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-05-07
    Type: Initial release
  • Version 1.1: 2014-06-18
    Changes: Database references