Measuring similarities between transcription factor binding sites.

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 Bioinformatics

journal_title

BMC bioinformatics

authors

Kielbasa SM,Gonze D,Herzel H

doi

10.1186/1471-2105-6-237

keywords:

subject

Has Abstract

pub_date

2005-09-28 00:00:00

pages

237

issn

1471-2105

pii

1471-2105-6-237

journal_volume

6

pub_type

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