177D

SOLUTION STRUCTURE AND HYDRATION PATTERNS OF A PYRIMIDINE(DOT)PURINE(DOT)PYRIMIDINE DNA TRIPLEX CONTAINING A NOVEL T(DOT)CG TRIPLE


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 
  • Conformers Submitted: 
  • Selection Criteria: all calculated structures submitted 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structure and hydration patterns of a pyrimidine.purine.pyrimidine DNA triplex containing a novel T.CG base-triple.

Radhakrishnan, I.Patel, D.J.

(1994) J.Mol.Biol. 241: 600-619

  • DOI: 10.1006/jmbi.1994.1534

  • PubMed Abstract: 
  • The solution structure of a pyrimidine.purine.pyrimidine DNA triplex containing a novel T.CG base-triple has been determined via two and three-dimensional NMR spectroscopy and restrained molecular dynamics simulations incorporating explicit solvent a ...

    The solution structure of a pyrimidine.purine.pyrimidine DNA triplex containing a novel T.CG base-triple has been determined via two and three-dimensional NMR spectroscopy and restrained molecular dynamics simulations incorporating explicit solvent and counter-ions. The T.CG triple, which expands the triplex code, is stabilized by a single hydrogen bond between the O-2 atom of thymine and the free amino proton of cytosine in the Watson-Crick C.G base-pair. This hydrogen bonding alignment produces large variations in helical twist at the dinucleotide steps involving the thymine residue. Localized structural perturbations in the purine-rich strand of the molecule are observed around the cytosine residue in the T.CG triple. Globally, the triplex resembles the solution structure of a previously solved pyrimidine.purine.pyrimidine DNA triplex containing an unusual G.TA triple. Also conserved are the sites and patterns of hydration in the two triplexes.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biophysics, College of Physicians and Surgeons of Columbia University, New York, NY 10032.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(*GP*AP*AP*CP*AP*GP*GP*TP*TP*TP*TP*T*CP*CP*TP*GP*TP*TP*CP*TP*TP*TP*TP*T*CP*TP*TP*TP*TP*CP*C)-3')A31N/A
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 
  • Conformers Submitted: 
  • Selection Criteria: all calculated structures submitted 
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORrefinement
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-10-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance