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Nat Methods. 2012 Oct;9(10):999-1003. doi: 10.1038/nmeth.2148. Epub 2012 Sep 2.

Iterative correction of Hi-C data reveals hallmarks of chromosome organization.

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  • 1Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.

Abstract

Extracting biologically meaningful information from chromosomal interactions obtained with genome-wide chromosome conformation capture (3C) analyses requires the elimination of systematic biases. We present a computational pipeline that integrates a strategy to map sequencing reads with a data-driven method for iterative correction of biases, yielding genome-wide maps of relative contact probabilities. We validate this ICE (iterative correction and eigenvector decomposition) technique on published data obtained by the high-throughput 3C method Hi-C, and we demonstrate that eigenvector decomposition of the obtained maps provides insights into local chromatin states, global patterns of chromosomal interactions, and the conserved organization of human and mouse chromosomes.

PMID:
22941365
[PubMed - indexed for MEDLINE]
PMCID:
PMC3816492
Free PMC Article

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