4CT7

CNOT9-CNOT1 complex with bound tryptophan


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.897 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.2 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
  • Primary Citation of Related Structures:  

  • 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.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CCR4-NOT TRANSCRIPTION COMPLEX SUBUNIT 1
A
243Homo sapiensMutation(s): 0 
Gene Names: CNOT1 (CDC39, KIAA1007, NOT1)
Find proteins for A5YKK6 (Homo sapiens)
Go to Gene View: CNOT1
Go to UniProtKB:  A5YKK6
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CELL DIFFERENTIATION PROTEIN RCD1 HOMOLOG
B
270Homo sapiensMutation(s): 0 
Gene Names: CNOT9 (RCD1, RQCD1)
Find proteins for Q92600 (Homo sapiens)
Go to Gene View: CNOT9
Go to UniProtKB:  Q92600
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TRP
Query on TRP

Download SDF File 
Download CCD File 
B
TRYPTOPHAN
C11 H12 N2 O2
QIVBCDIJIAJPQS-VIFPVBQESA-N
 Ligand Interaction
MES
Query on MES

Download SDF File 
Download CCD File 
B
2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.897 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.183 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 155.031α = 90.00
b = 66.984β = 99.85
c = 72.653γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
SCALAdata scaling
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-05-07
    Type: Initial release
  • Version 1.1: 2014-06-18
    Type: Database references
  • Version 1.2: 2014-06-25
    Type: Database references