2MKI

Solution structure of tandem RRM domains of cytoplasmic polyadenylation element binding protein 4 (CPEB4) in complex with RNA


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: https://doi.org/10.1101/gad.241133.114
  • Primary Citation of Related Structures:  
    2MKE, 2MKH, 2MKI, 2MKJ, 2MKK

  • 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 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

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cytoplasmic polyadenylation element-binding protein 4203Homo sapiensMutation(s): 0 
Gene Names: CPEB4KIAA1673
UniProt & NIH Common Fund Data Resources
Find proteins for Q17RY0 (Homo sapiens)
Explore Q17RY0 
Go to UniProtKB:  Q17RY0
PHAROS:  Q17RY0
GTEx:  ENSG00000113742 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ17RY0
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains LengthOrganismImage
RNA (5'-R(*CP*UP*UP*UP*A)-3')5N/A
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

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

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-07-23
    Type: Initial release
  • Version 1.1: 2024-05-01
    Changes: Data collection, Database references