132D

SOLUTION STRUCTURE OF THE TN AN DNA DUPLEX GCCGTTAACGGC CONTAINING THE HPA I RESTRICTION SITE


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

Solution structure of the TnAn DNA duplex GCCGTTAACGCG containing the HpaI restriction site.

Kim, S.G.Reid, B.R.

(1992) Biochemistry 31: 12103-12116


  • PubMed Abstract: 
  • The solution structure of the self-complementary DNA duplex [d(GCCGTTAACGGC)]2, which contains the HpaI restriction site GTTAAC, has been elucidated by two-dimensional NMR, distance geometry (DG), and NOE back-calculation methods. Initial distance co ...

    The solution structure of the self-complementary DNA duplex [d(GCCGTTAACGGC)]2, which contains the HpaI restriction site GTTAAC, has been elucidated by two-dimensional NMR, distance geometry (DG), and NOE back-calculation methods. Initial distance constraints were determined by polynomial fitting the two-spin initial NOE rates; backbone constraints from NOE and J-coupling observations (Kim et al., 1992) were included. RMSDs between initial-distance-refined structures derived from random-embedded DG, A-DNA, and B-DNA starting structures were all in the range 0.5-1.0 A, indicating good convergence properties of the algorithm, regardless of the starting structure. A semiautomatic back-calculation refinement procedure was developed and used to generate more refined structures for which the BKCALC-simulated NOE volumes matched the experimental data. The six final structures refined from various starting structures exhibit very good agreement with the experimental data (R values = 0.18) and converge well to within 0.8-A RMSD differences for the central 8 base pairs. The torsion and pseudorotation phase angles were found to be well determined by the data, and the local helical parameters for each base step converged quite well. The final structures show that the central T6-A7 step is somewhat underwound (twist angle ca. 29 degrees), with a large negative cup and a normal (wide) minor groove width, while the T5-T6 and A7-A8 steps have a partially narrowed minor groove.


    Organizational Affiliation

    Department of Chemistry, University of Washington, Seattle 98195.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(P*GP*CP*CP*GP*TP*TP*AP*AP*CP*GP*GP*C)-3')A,B12N/A
Experimental Data & Validation

Experimental Data

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

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 1993-06-24 
  • Released Date: 1994-01-31 
  • Deposition Author(s): Kim, S.-G., Reid, B.R.

Revision History 

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance