Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 15.27 kDa 
• Atom Count: 1009 
• Modelled Residue Count: 48 
• Deposited Residue Count: 48 
• Unique nucleic acid chains: 1

2KUV

Solution Structure of K10 TLS RNA (GC mutant in lower helix)

• PDB DOI: 10.2210/pdb2KUV/pdb
• NDB: 2KUV

• Classification: RNA
• Organism(s): Drosophila melanogaster
• Mutation(s): No 


• Deposited: 2010-03-01 Released: 2010-05-19 
• Deposition Author(s): Bullock, S.L., Ringel, I., Ish-Horowicz, D., Lukavsky, P.J.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Literature

A'-form RNA helices are required for cytoplasmic mRNA transport in Drosophila.

Bullock, S.L., Ringel, I., Ish-Horowicz, D., Lukavsky, P.J.

(2010) Nat Struct Mol Biol 17: 703-709

• PubMed: 20473315 
• DOI: 10.1038/nsmb.1813
• Primary Citation of Related Structures:  
  2KE6, 2KUR, 2KUU, 2KUV, 2KUW


• PubMed Abstract: 
  

Microtubule-based mRNA transport is widely used to restrict protein expression to specific regions in the cell and has important roles in defining cell polarity and axis determination as well as in neuronal function. However, the structural basis of recognition of cis-acting mRNA localization signals by motor complexes is poorly understood. We have used NMR spectroscopy to describe the first tertiary structure to our knowledge of an RNA element responsible for mRNA transport. The Drosophila melanogaster fs(1)K10 signal, which mediates transport by the dynein motor, forms a stem loop with two double-stranded RNA helices adopting an unusual A'-form conformation with widened major grooves reminiscent of those in B-form DNA. Structure determination of four mutant RNAs and extensive functional assays in Drosophila embryos indicate that the two spatially registered A'-form helices represent critical recognition sites for the transport machinery. Our study provides insights into the basis for RNA cargo recognition and reveals a key biological function encoded by A'-form RNA conformation.

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Organizational Affiliation: 

Division of Cell Biology, Medical Research Council Laboratory of Molecular Biology, Cambridge, UK.

Macromolecules

Entity ID: 1
Molecule	Chains	Length	Organism	Image
K10 TLS RNA	A	48	Drosophila melanogaster

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2KUV Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-03-01 
• Released Date: 2010-05-19 
Deposition Author(s): Bullock, S.L., Ringel, I., Ish-Horowicz, D., Lukavsky, P.J.

Revision History  

• Version 1.0: 2010-05-19
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2022-03-16
  Changes: Data collection, Database references, Derived calculations