Identifying and Reducing Systematic Errors in Chromosome Conformation Capture Data.

ABSTRACT: Chromosome conformation capture (3C)-based techniques have recently been used to uncover the mystic genomic architecture in the nucleus. These techniques yield indirect data on the distances between genomic loci in the form of contact frequencies that must be normalized to remove various errors. This normalization process determines the quality of data analysis. In this study, we describe two systematic errors that result from the heterogeneous local density of restriction sites and different local chromatin states, methods to identify and remove those artifacts, and three previously described sources of systematic errors in 3C-based data: fragment length, mappability, and local DNA composition. To explain the effect of systematic errors on the results, we used three different published da

SUBMITTER: Hahn S 

PROVIDER: S-EPMC4696798 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature