5A17

The structure of the SOLE element of oskar mRNA


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

wwPDB Validation   3D Report Full Report


This is version 2.2 of the entry. See complete history


Literature

The Structure of the Sole Element of Oskar Mrna.

Simon, B.Masiewicz, P.Ephrussi, A.Carlomagno, T.

(2015) RNA 21: 1444-1453

  • DOI: https://doi.org/10.1261/rna.049601.115
  • Primary Citation of Related Structures:  
    5A17, 5A18

  • PubMed Abstract: 

    mRNA localization by active transport is a regulated process that requires association of mRNPs with protein motors for transport along either the microtubule or the actin cytoskeleton. oskar mRNA localization at the posterior pole of the Drosophila oocyte requires a specific mRNA sequence, termed the SOLE, which comprises nucleotides of both exon 1 and exon 2 and is assembled upon splicing. The SOLE folds into a stem-loop structure. Both SOLE RNA and the exon junction complex (EJC) are required for oskar mRNA transport along the microtubules by kinesin. The SOLE RNA likely constitutes a recognition element for a yet unknown protein, which either belongs to the EJC or functions as a bridge between the EJC and the mRNA. Here, we determine the solution structure of the SOLE RNA by Nuclear Magnetic Resonance spectroscopy. We show that the SOLE forms a continuous helical structure, including a few noncanonical base pairs, capped by a pentanucleotide loop. The helix displays a widened major groove, which could accommodate a protein partner. In addition, the apical helical segment undergoes complex dynamics, with potential functional significance.


  • Organizational Affiliation

    Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, D-69117, Germany.


Macromolecules
Find similar nucleic acids by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains LengthOrganismImage
OSKAR MRNA32Drosophila melanogaster
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-05-06
    Type: Initial release
  • Version 1.1: 2015-07-01
    Changes: Database references
  • Version 1.2: 2015-07-29
    Changes: Database references
  • Version 1.3: 2016-04-27
    Changes: Atomic model, Other
  • Version 2.0: 2018-01-24
    Changes: Atomic model, Data collection, Database references, Source and taxonomy
  • Version 2.1: 2023-06-14
    Changes: Data collection, Database references, Other
  • Version 2.2: 2024-06-19
    Changes: Data collection, Database references