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  • PubMed: An effective approach for identification of in vivo protein-DNA binding sites

    Syndicated from PubMed RSS Feeds

    An effective approach for identification of in vivo protein-DNA binding sites from paired-end ChIP-Seq data.

    BMC Bioinformatics. 2010 Feb 9;11(1):81

    Authors: Wang C, Xu J, Zhang D, Wilson ZA, Zhang D

    ABSTRACT: BACKGROUND: ChIP-Seq, which combines chromatin immunoprecipitation (ChIP) with high-throughput massively parallel sequencing, is increasingly being used for identification of protein-DNA interactions in vivo in the genome. However, to maximize the effectiveness of data analysis of such sequences requires the development of new algorithms that are able to accurately predict DNA-protein binding sites. RESULTS: Here, we present SIPeS (Site Identification from Paired-end Sequencing), a novel algorithm for precise identification of binding sites from short reads generated by paired-end Solexa ChIP-Seq technology. In this paper we used ChIP-Seq data from the Arabidopsis basic helix-loop-helix transcription factor ABORTED MICROSPORES (AMS), which is expressed within the anther during pollen development, the results show that SIPeS has better resolution for binding site identification compared to two existing ChIP-Seq peak detection algorithms, Cisgenome and MACS. CONCLUSIONS: When compared to Cisgenome and MACS, SIPeS shows better resolution for binding sites discovery. Moreover, SIPeS is designed to calculate the mappable genome length accurately with the fragment length based on the paired-end reads. Dynamic baselines are also employed to effectively discriminate closely adjacent binding sites, for effective binding sites discoverywhich is of particular value when working with high-density genomes.

    PMID: 20144209 [PubMed - as supplied by publisher]



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