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Predicting the binding preference of transcription factors to individual DNA k-mers

Identifieur interne : 002959 ( Main/Exploration ); précédent : 002958; suivant : 002960

Predicting the binding preference of transcription factors to individual DNA k-mers

Auteurs : Trevis M. Alleyne ; Lourdes Pe A-Castillo [Canada] ; Gwenael Badis [Canada] ; Shaheynoor Talukder ; Michael F. Berger [États-Unis] ; Andrew R. Gehrke [États-Unis] ; Anthony A. Philippakis [États-Unis] ; Martha L. Bulyk [États-Unis] ; Quaid D. Morris [Canada] ; Timothy R. Hughes [Canada]

Source :

RBID : PMC:2666811

Descripteurs français

English descriptors

Abstract

Motivation: Recognition of specific DNA sequences is a central mechanism by which transcription factors (TFs) control gene expression. Many TF-binding preferences, however, are unknown or poorly characterized, in part due to the difficulty associated with determining their specificity experimentally, and an incomplete understanding of the mechanisms governing sequence specificity. New techniques that estimate the affinity of TFs to all possible k-mers provide a new opportunity to study DNA–protein interaction mechanisms, and may facilitate inference of binding preferences for members of a given TF family when such information is available for other family members.

Results: We employed a new dataset consisting of the relative preferences of mouse homeodomains for all eight-base DNA sequences in order to ask how well we can predict the binding profiles of homeodomains when only their protein sequences are given. We evaluated a panel of standard statistical inference techniques, as well as variations of the protein features considered. Nearest neighbour among functionally important residues emerged among the most effective methods. Our results underscore the complexity of TF–DNA recognition, and suggest a rational approach for future analyses of TF families.

Contact: t.hughes@utorotno.ca

Supplementary information: Supplementary data are available at Bioinformatics online.


Url:
DOI: 10.1093/bioinformatics/btn645
PubMed: 19088121
PubMed Central: 2666811


Affiliations:


Links toward previous steps (curation, corpus...)


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<term>Binding Sites</term>
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<term>DNA (chemistry)</term>
<term>DNA (metabolism)</term>
<term>Sequence Analysis, DNA (methods)</term>
<term>Transcription Factors (chemistry)</term>
<term>Transcription Factors (metabolism)</term>
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<term>ADN ()</term>
<term>ADN (métabolisme)</term>
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<p>
<bold>Motivation:</bold>
Recognition of specific DNA sequences is a central mechanism by which transcription factors (TFs) control gene expression. Many TF-binding preferences, however, are unknown or poorly characterized, in part due to the difficulty associated with determining their specificity experimentally, and an incomplete understanding of the mechanisms governing sequence specificity. New techniques that estimate the affinity of TFs to all possible
<italic>k</italic>
-mers provide a new opportunity to study DNA–protein interaction mechanisms, and may facilitate inference of binding preferences for members of a given TF family when such information is available for other family members.</p>
<p>
<bold>Results:</bold>
We employed a new dataset consisting of the relative preferences of mouse homeodomains for all eight-base DNA sequences in order to ask how well we can predict the binding profiles of homeodomains when only their protein sequences are given. We evaluated a panel of standard statistical inference techniques, as well as variations of the protein features considered. Nearest neighbour among functionally important residues emerged among the most effective methods. Our results underscore the complexity of TF–DNA recognition, and suggest a rational approach for future analyses of TF families.</p>
<p>
<bold>Contact:</bold>
<email>t.hughes@utorotno.ca</email>
</p>
<p>
<bold>Supplementary information:</bold>
<ext-link ext-link-type="uri" xlink:href="http://bioinformatics.oxfordjournals.org/cgi/content/full/btn645/DC1">Supplementary data</ext-link>
are available at
<italic>Bioinformatics</italic>
online.</p>
</div>
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<li>Canada</li>
<li>États-Unis</li>
</country>
<region>
<li>Massachusetts</li>
<li>Ontario</li>
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<li>Université de Toronto</li>
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<name sortKey="Talukder, Shaheynoor" sort="Talukder, Shaheynoor" uniqKey="Talukder S" first="Shaheynoor" last="Talukder">Shaheynoor Talukder</name>
</noCountry>
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<region name="Ontario">
<name sortKey="Pe A Castillo, Lourdes" sort="Pe A Castillo, Lourdes" uniqKey="Pe A Castillo L" first="Lourdes" last="Pe A-Castillo">Lourdes Pe A-Castillo</name>
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<name sortKey="Hughes, Timothy R" sort="Hughes, Timothy R" uniqKey="Hughes T" first="Timothy R." last="Hughes">Timothy R. Hughes</name>
<name sortKey="Morris, Quaid D" sort="Morris, Quaid D" uniqKey="Morris Q" first="Quaid D." last="Morris">Quaid D. Morris</name>
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<country name="États-Unis">
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<name sortKey="Berger, Michael F" sort="Berger, Michael F" uniqKey="Berger M" first="Michael F." last="Berger">Michael F. Berger</name>
</region>
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<name sortKey="Bulyk, Martha L" sort="Bulyk, Martha L" uniqKey="Bulyk M" first="Martha L." last="Bulyk">Martha L. Bulyk</name>
<name sortKey="Bulyk, Martha L" sort="Bulyk, Martha L" uniqKey="Bulyk M" first="Martha L." last="Bulyk">Martha L. Bulyk</name>
<name sortKey="Bulyk, Martha L" sort="Bulyk, Martha L" uniqKey="Bulyk M" first="Martha L." last="Bulyk">Martha L. Bulyk</name>
<name sortKey="Bulyk, Martha L" sort="Bulyk, Martha L" uniqKey="Bulyk M" first="Martha L." last="Bulyk">Martha L. Bulyk</name>
<name sortKey="Gehrke, Andrew R" sort="Gehrke, Andrew R" uniqKey="Gehrke A" first="Andrew R." last="Gehrke">Andrew R. Gehrke</name>
<name sortKey="Philippakis, Anthony A" sort="Philippakis, Anthony A" uniqKey="Philippakis A" first="Anthony A." last="Philippakis">Anthony A. Philippakis</name>
<name sortKey="Philippakis, Anthony A" sort="Philippakis, Anthony A" uniqKey="Philippakis A" first="Anthony A." last="Philippakis">Anthony A. Philippakis</name>
<name sortKey="Philippakis, Anthony A" sort="Philippakis, Anthony A" uniqKey="Philippakis A" first="Anthony A." last="Philippakis">Anthony A. Philippakis</name>
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