1BWT

NMR SOLUTION STRUCTURE OF [D(GCGAATCGC)2]


Experimental Data Snapshot

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

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

NMR solution structures of [d(GCGAAT-3'-3'-alphaT-5'-5'-CGC)2] and its unmodified control.

Aramini, J.M.Mujeeb, A.Germann, M.W.

(1998) Nucleic Acids Res. 26: 5644-5654

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • We present the high-resolution solution structures of a self-complementary DNA decamer duplex featuring a single alpha-anomeric nucleotide per strand encompassed by a set of 3'-3' and 5'-5' phosphodiester linkages, d(GCGAAT-3'-3'-alphaT-5'-5'-CGC)2, ...

    We present the high-resolution solution structures of a self-complementary DNA decamer duplex featuring a single alpha-anomeric nucleotide per strand encompassed by a set of 3'-3' and 5'-5' phosphodiester linkages, d(GCGAAT-3'-3'-alphaT-5'-5'-CGC)2, alphaT, and its unmodified control, d(GCGAATTCGC)2, obtained by restrained molecular dynamics. Interproton distance and deoxyribose ring torsion angle restraints were deduced from homonuclear NOESY and DQF-COSY data, respectively. For both the control and alphaT duplexes, excellent global convergence was observed from two different (A- and B-) starting models. The final average structures of the two duplexes are highly homologous, and overall possess the traits characteristic of right-handed B-DNA duplexes. However, localized differences between the two structures stem from the enhanced conformational exchange in the deoxyribose ring of the cytidine following the 5'-5' linkage, the C3'- exo pseudorotation phase angle of the alpha-nucleotide, and unusual backbone torsions in the 3'-3' and 5'-5' phosphodiester linkages. The structural data reported here are relevant to the design of antisense therapeutics comprised of these modifications.


    Organizational Affiliation

    Department of Microbiology and Immunology, Kimmel Cancer Institute, Thomas Jefferson University, Philadelphia, PA 19107, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(*GP*CP*GP*AP*AP*TP*TP*CP*GP*C)-3')A,B10N/A
Experimental Data & Validation

Experimental Data

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

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-01-06
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance