csaw: a Bioconductor package for differential binding analysis of ChIP-seq data using sliding windows
AuthorLun, ATL; Smyth, GK
Source TitleNucleic Acids Research
PublisherOXFORD UNIV PRESS
University of Melbourne Author/sSmyth, Gordon
AffiliationSchool of Mathematics and Statistics
Document TypeJournal Article
CitationsLun, A. T. L. & Smyth, G. K. (2016). csaw: a Bioconductor package for differential binding analysis of ChIP-seq data using sliding windows. NUCLEIC ACIDS RESEARCH, 44 (5), https://doi.org/10.1093/nar/gkv1191.
Access StatusOpen Access
Chromatin immunoprecipitation with massively parallel sequencing (ChIP-seq) is widely used to identify binding sites for a target protein in the genome. An important scientific application is to identify changes in protein binding between different treatment conditions, i.e. to detect differential binding. This can reveal potential mechanisms through which changes in binding may contribute to the treatment effect. The csaw package provides a framework for the de novo detection of differentially bound genomic regions. It uses a window-based strategy to summarize read counts across the genome. It exploits existing statistical software to test for significant differences in each window. Finally, it clusters windows into regions for output and controls the false discovery rate properly over all detected regions. The csaw package can handle arbitrarily complex experimental designs involving biological replicates. It can be applied to both transcription factor and histone mark datasets, and, more generally, to any type of sequencing data measuring genomic coverage. csaw performs favorably against existing methods for de novo DB analyses on both simulated and real data. csaw is implemented as a R software package and is freely available from the open-source Bioconductor project.
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