2RQC

Solution Structure of RNA-binding domain 3 of CUGBP1 in complex with RNA (UG)3


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural basis for the sequence-specific RNA-recognition mechanism of human CUG-BP1 RRM3

Tsuda, K.Kuwasako, K.Takahashi, M.Someya, T.Inoue, M.Terada, T.Kobayashi, N.Shirouzu, M.Kigawa, T.Tanaka, A.Sugano, S.Guntert, P.Muto, Y.Yokoyama, S.

(2009) Nucleic Acids Res. 37: 5151-5166

  • DOI: 10.1093/nar/gkp546
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The CUG-binding protein 1 (CUG-BP1) is a member of the CUG-BP1 and ETR-like factors (CELF) family or the Bruno-like family and is involved in the control of splicing, translation and mRNA degradation. Several target RNA sequences of CUG-BP1 have been ...

    The CUG-binding protein 1 (CUG-BP1) is a member of the CUG-BP1 and ETR-like factors (CELF) family or the Bruno-like family and is involved in the control of splicing, translation and mRNA degradation. Several target RNA sequences of CUG-BP1 have been predicted, such as the CUG triplet repeat, the GU-rich sequences and the AU-rich element of nuclear pre-mRNAs and/or cytoplasmic mRNA. CUG-BP1 has three RNA-recognition motifs (RRMs), among which the third RRM (RRM3) can bind to the target RNAs on its own. In this study, we solved the solution structure of the CUG-BP1 RRM3 by hetero-nuclear NMR spectroscopy. The CUG-BP1 RRM3 exhibited a noncanonical RRM fold, with the four-stranded beta-sheet surface tightly associated with the N-terminal extension. Furthermore, we determined the solution structure of the CUG-BP1 RRM3 in the complex with (UG)(3) RNA, and discovered that the UGU trinucleotide is specifically recognized through extensive stacking interactions and hydrogen bonds within the pocket formed by the beta-sheet surface and the N-terminal extension. This study revealed the unique mechanism that enables the CUG-BP1 RRM3 to discriminate the short RNA segment from other sequences, thus providing the molecular basis for the comprehension of the role of the RRM3s in the CELF/Bruno-like family.


    Organizational Affiliation

    RIKEN Systems and Structural Biology Center, Tsurumi, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CUG-BP- and ETR-3-like factor 1
A
115Homo sapiensMutation(s): 0 
Gene Names: CELF1 (BRUNOL2, CUGBP, CUGBP1, NAB50)
Find proteins for Q92879 (Homo sapiens)
Go to Gene View: CELF1
Go to UniProtKB:  Q92879
Entity ID: 2
MoleculeChainsLengthOrganism
5'-R(*UP*GP*UP*GP*UP*G)-3'B6N/A
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 
  • Olderado: 2RQC Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-08-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance