2MKH

Solution structure of tandem RRM domains of cytoplasmic polyadenylation element binding protein 1 (CPEB1) in free state


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A fly trap mechanism provides sequence-specific RNA recognition by CPEB proteins

Afroz, T.Skrisovska, L.Belloc, E.Guillen-Boixet, J.Mendez, R.Allain, F.H.-T.

(2014) Genes Dev. 28: 1498-1514

  • DOI: 10.1101/gad.241133.114
  • Primary Citation of Related Structures:  2MKE, 2MKK, 2MKJ, 2MKI

  • PubMed Abstract: 
  • Cytoplasmic changes in polyA tail length is a key mechanism of translational control and is implicated in germline development, synaptic plasticity, cellular proliferation, senescence, and cancer progression. The presence of a U-rich cytoplasmic poly ...

    Cytoplasmic changes in polyA tail length is a key mechanism of translational control and is implicated in germline development, synaptic plasticity, cellular proliferation, senescence, and cancer progression. The presence of a U-rich cytoplasmic polyadenylation element (CPE) in the 3' untranslated regions (UTRs) of the responding mRNAs gives them the selectivity to be regulated by the CPE-binding (CPEB) family of proteins, which recognizes RNA via the tandem RNA recognition motifs (RRMs). Here we report the solution structures of the tandem RRMs of two human paralogs (CPEB1 and CPEB4) in their free and RNA-bound states. The structures reveal an unprecedented arrangement of RRMs in the free state that undergo an original closure motion upon RNA binding that ensures high fidelity. Structural and functional characterization of the ZZ domain (zinc-binding domain) of CPEB1 suggests a role in both protein-protein and protein-RNA interactions. Together with functional studies, the structures reveal how RNA binding by CPEB proteins leads to an optimal positioning of the N-terminal and ZZ domains at the 3' UTR, which favors the nucleation of the functional ribonucleoprotein complexes for translation regulation.


    Organizational Affiliation

    Institute of Molecular Biology and Biophysics, Eidgenössische Technische Hochschule (ETH) Zurich, CH-8093 Zürich, Switzerland;




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cytoplasmic polyadenylation element-binding protein 1
A
217Homo sapiensGene Names: CPEB1 (CPEB)
Find proteins for Q9BZB8 (Homo sapiens)
Go to Gene View: CPEB1
Go to UniProtKB:  Q9BZB8
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-07-23
    Type: Initial release
  • Version 1.1: 2016-04-27
    Type: Structure summary