Abstract:
BACKGROUND:Collections of transcription factor binding profiles (Transfac, Jaspar) are essential to identify regulatory elements in DNA sequences. Subsets of highly similar profiles complicate large scale analysis of transcription factor binding sites. RESULTS:We propose to identify and group similar profiles using two independent similarity measures: chi2 distances between position frequency matrices (PFMs) and correlation coefficients between position weight matrices (PWMs) scores. CONCLUSION:We show that these measures complement each other and allow to associate Jaspar and Transfac matrices. Clusters of highly similar matrices are identified and can be used to optimise the search for regulatory elements. Moreover, the application of the measures is illustrated by assigning E-box matrices of a SELEX experiment and of experimentally characterised binding sites of circadian clock genes to the Myc-Max cluster.
journal_name
BMC Bioinformaticsjournal_title
BMC bioinformaticsauthors
Kielbasa SM,Gonze D,Herzel Hdoi
10.1186/1471-2105-6-237keywords:
subject
Has Abstractpub_date
2005-09-28 00:00:00pages
237issn
1471-2105pii
1471-2105-6-237journal_volume
6pub_type
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