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                                       Details for article 7 of 10 found articles
 
 
  PREDICTOR: A Web-Based Tool for the Prediction of Atomic Structure from Sequence for Double Helical DNA with up to 150 Base Pairs
 
 
Title: PREDICTOR: A Web-Based Tool for the Prediction of Atomic Structure from Sequence for Double Helical DNA with up to 150 Base Pairs
Author: Farwer, Jochen
Packer, Martin J.
Hunter, Christopher A.
Appeared in: In silico biology
Paging: Volume 7 (2008) nr. 6 pages 595-600
Year: 2008-03-25
Contents: We announce the release of a web-based tool for DNA structure prediction (PREDICTOR) which allows the calculation of atomic structures of double-helical DNA with up to 150 Watson-Crick base pairs (http://farwer.staff.shef.ac.uk/ PREDICTOR). The semi-empirical method uses computational chemistry to extrapolate knowledge of sequence-dependent DNA structure contained in the X-ray crystal structure database. The properties of the base stacking interactions are treated theoretically, and an empirical model is used to add the conformational constraints imposed by the backbone. For DNA oligomers in the X-ray crystal structure database that were not used for parameterisation of the model, the method distinguishes A and B form DNA reasonably reliably, and the final structures are accurate to 2 å rmsd. Simulation of a 150mer and a 494mer with experimentally confirmed bending clearly reproduces the bending whereas the predicted structure of a random 150mer does not show any curvature. Calculation times are 90 seconds for an octamer and 7 minutes for a 30mer.
Publisher: IOS Press
Source file: Elektronische Wetenschappelijke Tijdschriften
 
 

                             Details for article 7 of 10 found articles
 
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