1AGK

THE SOLUTION NMR STRUCTURE OF AN (R)-A-(N6-ADENYL)-STYRENE OXIDE-RAS61 OLIGODEOXYNUCLEOTIDE MODIFIED AT THE SECOND POSITION OF THE CODON 61 REGION, MINIMIZED AVERAGE STRUCTURE

  • Classification: DNA

  • Deposited: 1997-03-25 Released: 1997-08-20 
  • Deposition Author(s): Feng, B., Stone, M.P.

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 
  • Conformers Submitted: 
  • Selection Criteria: THIS STRUCTURE PROVIDED THE BEST-FIT FOR THE NOE DATA BASED ON THE RELAXATION MATRIX ANALYSIS USING CORMA 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Major groove (R)-alpha-(N6-adenyl)styrene oxide adducts in an oligodeoxynucleotide containing the human N-ras codon 61 sequence: conformations of the R(61,2) and R(61,3) sequence isomers from 1H NMR.

Feng, B.Zhou, L.Passarelli, M.Harris, C.M.Harris, T.M.Stone, M.P.

(1995) Biochemistry 34: 14021-14036

  • Primary Citation of Related Structures:  1AGZ

  • PubMed Abstract: 
  • Conformations of (R)-alpha-(N6-adenyl)styrene oxide adducts at positions X6 in d(CGGACXAGAAG).d(CTTCTTGTCCG) and X7 in d(CGGACAXGAAG).d(CTTCTTGTCCG), incorporating codons 60, 61 (underlined), and 62 of the human n-ras protooncogene, were refined from ...

    Conformations of (R)-alpha-(N6-adenyl)styrene oxide adducts at positions X6 in d(CGGACXAGAAG).d(CTTCTTGTCCG) and X7 in d(CGGACAXGAAG).d(CTTCTTGTCCG), incorporating codons 60, 61 (underlined), and 62 of the human n-ras protooncogene, were refined from 1H NMR data. These were the R(61,2) and R(61,3) adducts. Chemical shift perturbations were in the 5'-direction from the sites of adduction; large changes were observed for C5 H5 and H6 in the R(61,2) adduct. The styrene moieties were only partially defined by NOE data. Spectral overlap, particularly for the R(61,2) adduct, prevented complete assignments of the aromatic resonances; likewise, there were insufficient data to orient the CH2OH moieties. Ring flips were slow on the NMR time scale. For the R(61,2) adduct 260 restraints were obtained from NOE data at three mixing times using relaxation matrix analysis; for the R(61,3) adduct 230 restraints were obtained. Structures emergent from molecular dynamics/simulated annealing for the R(61,2) adduct converged to average and maximum pairwise rms differences of 1.3 and 1.7 A, respectively, while those for the R(61,3) adduct converged to average and maximum pairwise rms differences of 1.2 and 1.6 A. Sixth root residual indices of 7.5 and 6.8 x 10(-2) were measured between the refined structures and NOE intensities using relaxation matrix calculations for the R(61,2) and R(61,3) adducts, respectively. The styrene rings were in the 5'-direction from the lesion sites in the major groove. The preferred orientation calculated for the R(61,2) adduct placed the styrene ring edgewise and approximately orthogonal to C5, while that calculated for the R(61,3) duplex had the styrene ring approximately orthogonal to the major groove edges of base pairs A6.T17 and R-SOA7.T16.


    Related Citations: 
    • Solution Structure of an Oligodeoxynucleotide Containing the Human N-Ras Codon 61 Sequence Refined from 1H NMR Using Molecular Dynamics Restrained by Nuclear Overhauser Effects
      Feng, B.,Stone, M.P.
      (1995) Chem.Res.Toxicol. 8: 821


    Organizational Affiliation

    Center in Molecular Toxicology, Vanderbilt University, Nashville, Tennessee 37235, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(*CP*GP*GP*AP*CP*RP*AP*GP*AP*AP*G)-3')A11N/A
Entity ID: 2
MoleculeChainsLengthOrganism
DNA (5'-D(*CP*TP*TP*CP*TP*TP*GP*TP*CP*CP*G)-3')B11N/A
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
R
Query on R
A
DNA LINKINGC18 H22 N5 O7 PDA
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 
  • Conformers Submitted: 
  • Selection Criteria: THIS STRUCTURE PROVIDED THE BEST-FIT FOR THE NOE DATA BASED ON THE RELAXATION MATRIX ANALYSIS USING CORMA 
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORphasing
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1997-03-25 
  • Released Date: 1997-08-20 
  • Deposition Author(s): Feng, B., Stone, M.P.

Revision History 

  • Version 1.0: 1997-08-20
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance