Construction of a genome-scale structural map at single-nucleotide resolution
Abstract
Few methods are available for mapping the local structure of DNA throughout a genome. The hydroxyl radical cleavage pattern is a measure of the local variation in solvent-accessible surface area of duplex DNA, and thus provides information on the local shape and structure of DNA. We report the construction of a relational database, ORChID (OH Radical Cleavage Intensity Database), that contains extensive hydroxyl radical cleavage data produced from two DNA libraries. We have used the ORChID database to develop a set of algorithms that are capable of predicting the hydroxyl radical cleavage pattern of a DNA sequence of essentially any length, to high accuracy. We have used the prediction algorithm to produce a structural map of the 30 Mb of the ENCODE regions of the human genome.
Footnotes
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↵3 Corresponding author.
↵3 E-mail tullius{at}bu.edu; fax (617) 353-6466.
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[Supplemental material is available online at www.genome.org.]
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Article is online at http://www.genome.org/cgi/doi/10.1101/gr.6073107
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- Received October 24, 2006.
- Accepted January 29, 2007.
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Freely available online through the Genome Research Open Access option.
- Copyright © 2007, Cold Spring Harbor Laboratory Press