1H0Q

NMR solution structure of a fully modified locked nucleic acid (LNA) hybridized to RNA


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 

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This is version 1.2 of the entry. See complete history


Literature

NMR Studies of Fully Modified Locked Nucleic Acid (Lna) Hybrids: Solution Structure of an Lna:RNA Hybrid and Characterization of an Lna:RNA Hybrid

Nielsen, K.E.Rasmussen, J.Kumar, R.Wengel, J.Jacobsen, J.P.Petersen, M.

(2004) Bioconjug Chem 15: 449

  • DOI: 10.1021/bc034145h
  • Primary Citation of Related Structures:  
    1H0Q

  • PubMed Abstract: 
  • LNA is a bicyclic nucleic acid analogue that contains one or more 2'-O,4'-C methylene linkage(s), which effectively locks the furanose ring in a C3'-endo conformation. We report here the NMR solution structure of a nonamer LNA:RNA hybrid and a structural characterization of a nonamer LNA:DNA hybrid, where the LNA strands are composed entirely of LNA nucleotides ...

    LNA is a bicyclic nucleic acid analogue that contains one or more 2'-O,4'-C methylene linkage(s), which effectively locks the furanose ring in a C3'-endo conformation. We report here the NMR solution structure of a nonamer LNA:RNA hybrid and a structural characterization of a nonamer LNA:DNA hybrid, where the LNA strands are composed entirely of LNA nucleotides. This is the first structural characterization of fully modified LNA oligonucleotides. The high-resolution structure reveals that the LNA:RNA hybrid adopts an almost canonical A-type duplex morphology. The helix axis is almost straight and the duplex geometry is regular. This shows that fully modified LNA oligomers can hybridize with complementary RNA and form duplexes within the Watson-Crick framework. The LNA:DNA hybrid structurally resembles an RNA:DNA hybrid as shown by determination of deoxyribose sugar puckers and analysis of NOESY NMR spectra.


    Organizational Affiliation

    Nucleic Acid Center, Department of Chemistry, University of Southern Denmark, 5230 Odense M, Denmark.



Macromolecules
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    5-D(*(LKC)P*(TLN)P*(LCG)P*(LCA)P*(TLN)P*(LCA)P* (TLN)P*(LCG)P*(LCC))-3A9N/A
    Protein Feature View
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    • Reference Sequence
    • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 2
      MoleculeChainsLengthOrganismImage
      5-R(*GP*CP*AP*UP*AP*UP*CP*AP*G)-3B9N/A
      Protein Feature View
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      • Reference Sequence
      Experimental Data & Validation

      Experimental Data

      • Method: SOLUTION NMR
      • Conformers Calculated: 20 
      • Conformers Submitted: 20 
      • OLDERADO: 1H0Q Olderado

      Structure Validation

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      Entry History 

      Deposition Data

      Revision History  (Full details and data files)

      • Version 1.0: 2003-07-17
        Type: Initial release
      • Version 1.1: 2011-05-08
        Changes: Version format compliance
      • Version 1.2: 2011-07-13
        Changes: Version format compliance