1BAE

STRUCTURE OF DNA (5'-D 5MCCTTTACC-3')2, NMR, 1 STRUCTURE


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Solution structure and base pair opening kinetics of the i-motif dimer of d(5mCCTTTACC): a noncanonical structure with possible roles in chromosome stability.

Nonin, S.Phan, A.T.Leroy, J.L.

(1997) Structure 5: 1231-1246

  • DOI: 10.1016/s0969-2126(97)00273-6
  • Primary Citation of Related Structures:  
    1BAE

  • PubMed Abstract: 
  • Repetitive cytosine-rich DNA sequences have been identified in telomeres and centromeres of eukaryotic chromosomes. These sequences play a role in maintaining chromosome stability during replication and may be involved in chromosome pairing during meiosis ...

    Repetitive cytosine-rich DNA sequences have been identified in telomeres and centromeres of eukaryotic chromosomes. These sequences play a role in maintaining chromosome stability during replication and may be involved in chromosome pairing during meiosis. The C-rich repeats can fold into an 'i-motif' structure, in which two parallel-stranded duplexes with hemiprotonated C.C+ pairs are intercalated. Previous NMR studies of naturally occurring repeats have produced poor NMR spectra. This led us to investigate oligonucleotides, based on natural sequences, to produce higher quality spectra and thus provide further information as to the structure and possible biological function of the i-motif.


    Related Citations: 
    • Structure and Conversion Kinetics of a Bi-Stable DNA I-Motif: Broken Symmetry in the [D(5Mcctcc)]4 Tetramer
      Nonin, S., Leroy, J.L.
      (1996) J Mol Biol 261: 399
    • Solution Structures of the I-Motif Tetramers of D(Tcc), D(5Methylcct) and D(T5Methylcc): Novel Noe Connections between Amino Protons and Sugar Protons
      Leroy, J.L., Gueron, M.
      (1995) Structure 3: 101

    Organizational Affiliation

    Groupe de Biophysique, de l'Ecole Polytechnique et de l'URA, CNRS, Palaiseau, France.



Macromolecules
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    DNA (5'-D(*MCYP*CP*TP*TP*TP*AP*CP*C)-3')A, B8synthetic construct
    Protein Feature View
    Expand
    • Reference Sequence
    Experimental Data & Validation

    Experimental Data

    • Method: SOLUTION NMR
    • Conformers Calculated: 50 
    • Conformers Submitted: 
    • Selection Criteria: structures with the least restraint violations 
    • OLDERADO: 1BAE Olderado

    Structure Validation

    View Full Validation Report




    Entry History 

    Deposition Data

    Revision History  (Full details and data files)

    • Version 1.0: 1998-01-14
      Type: Initial release
    • Version 1.1: 2008-03-24
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance
    • Version 1.3: 2018-03-14
      Changes: Data collection, Database references, Derived calculations, Experimental preparation, Other, Source and taxonomy