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A model-based approach to identify binding sites in CLIP-seq data

Tao Wang; Beibei Chen; MinSoo Kim; Yang Xie; Guanghua Xiao

(Profiled Authors: Guanghua Xiao; Yang Xie)

PLoS ONE. 2014;9(4).

Abstract

Cross-linking immunoprecipitation coupled with high-throughput sequencing (CLIP-Seq) has made it possible to identify the targeting sites of RNA-binding proteins in various cell culture systems and tissue types on a genome-wide scale. Here we present a novel model-based approach (MiClip) to identify high-confidence protein-RNA binding sites from CLIP-seq datasets. This approach assigns a probability score for each potential binding site to help prioritize subsequent validation experiments. The MiClip algorithm has been tested in both HITS-CLIP and PAR-CLIP datasets. In the HITS-CLIP dataset, the signal/noise ratios of miRNA seed motif enrichment produced by the MiClip approach are between 17% and 301% higher than those by the ad hoc method for the top 10 most enriched miRNAs. In the PAR-CLIP dataset, the MiClip approach can identify ∼50% more validated binding targets than the original ad hoc method and two recently published methods. To facilitate the application of the algorithm, we have released an R package, MiClip (http://cran.r-project.org/web/packages/ MiClip/index.html ) , and a public web-based graphical user interface software ( http://galaxy.qbrc.org/ tool-runner?tool-id=mi-clip) for customized analysis. © 2014 Wang et al.

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