2KHC

Bruno RRM3+


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • 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

Bruno protein contains an expanded RNA recognition motif.

Lyon, A.M.Reveal, B.S.Macdonald, P.M.Hoffman, D.W.

(2009) Biochemistry 48: 12202-12212

  • DOI: 10.1021/bi900624j

  • PubMed Abstract: 
  • The RNA recognition motif (or RRM) is a ubiquitous RNA-binding module present in approximately 2% of the proteins encoded in the human genome. This work characterizes an expanded RRM, which is present in the Drosophila Bruno protein, and targets regu ...

    The RNA recognition motif (or RRM) is a ubiquitous RNA-binding module present in approximately 2% of the proteins encoded in the human genome. This work characterizes an expanded RRM, which is present in the Drosophila Bruno protein, and targets regulatory elements in the oskar mRNA through which Bruno controls translation. In this Bruno RRM, the deletion of 40 amino acids prior to the N-terminus of the canonical RRM resulted in a significantly decreased affinity of the protein for its RNA target. NMR spectroscopy showed that the expanded Bruno RRM contains the familiar RRM fold of four antiparallel beta-strands and two alpha-helices, preceded by a 10-residue loop that contacts helix alpha(1) and strand beta(2); additional amino acids at the N-terminus of the domain are relatively flexible in solution. NMR results also showed that a truncated form of the Bruno RRM, lacking the flexible N-terminal amino acids, forms a stable and complete canonical RRM, so that the loss of RNA binding activity cannot be attributed to disruption of the RRM fold. This expanded Bruno RRM provides a new example of the features that are important for RNA recognition by an RRM-containing protein.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, University of Texas, Austin, Texas 78712, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Testis-specific RNP-type RNA binding protein
A
118Drosophila melanogasterGene Names: aret (bruno)
Find proteins for O18409 (Drosophila melanogaster)
Go to UniProtKB:  O18409
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the least restraint violations 
  • Olderado: 2KHC Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-12-22
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance