4CQO

Structure of the human CNOT1 superfamily homology domain in complex with a Nanos1 peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.222 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Basis for the Nanos-Mediated Recruitment of the Ccr4-not Complex and Translational Repression

Bhandari, D.Raisch, T.Weichenrieder, O.Jonas, S.Izaurralde, E.

(2014) Genes Dev. 28: 888

  • DOI: 10.1101/gad.237289.113

  • PubMed Abstract: 
  • The RNA-binding proteins of the Nanos family play an essential role in germ cell development and survival in a wide range of metazoan species. They function by suppressing the expression of target mRNAs through the recruitment of effector complexes, ...

    The RNA-binding proteins of the Nanos family play an essential role in germ cell development and survival in a wide range of metazoan species. They function by suppressing the expression of target mRNAs through the recruitment of effector complexes, which include the CCR4-NOT deadenylase complex. Here, we show that the three human Nanos paralogs (Nanos1-3) interact with the CNOT1 C-terminal domain and determine the structural basis for the specific molecular recognition. Nanos1-3 bind CNOT1 through a short CNOT1-interacting motif (NIM) that is conserved in all vertebrates and some invertebrate species. The crystal structure of the human Nanos1 NIM peptide bound to CNOT1 reveals that the peptide opens a conserved hydrophobic pocket on the CNOT1 surface by inserting conserved aromatic residues. The substitutions of these aromatic residues in the Nanos1-3 NIMs abolish binding to CNOT1 and abrogate the ability of the proteins to repress translation. Our findings provide the structural basis for the recruitment of the CCR4-NOT complex by vertebrate Nanos, indicate that the NIMs are the major determinants of the translational repression mediated by Nanos, and identify the CCR4-NOT complex as the main effector complex for Nanos function.


    Organizational Affiliation

    Department of Biochemistry, Max Planck Institute for Developmental Biology, 72076 Tübingen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CCR4-NOT TRANSCRIPTION COMPLEX SUBUNIT 1
A, C
535Homo 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
NANOS HOMOLOG 1
B, D
17Homo sapiensMutation(s): 0 
Gene Names: NANOS1 (NOS1)
Find proteins for Q8WY41 (Homo sapiens)
Go to Gene View: NANOS1
Go to UniProtKB:  Q8WY41
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.222 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 96.530α = 90.00
b = 167.330β = 90.00
c = 112.040γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
PHASERphasing
PHENIXrefinement
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-04-23
    Type: Initial release
  • Version 1.1: 2014-04-30
    Type: Database references