iDamIDseq and iDEAR: an improved method and computational pipeline to profile chromatin-binding proteins

Skip to Next Section - DNA adenine methyltransferase identification (DamID) has emerged as an alternative method to profile protein-DNA interactions; however, critical issues limit its widespread applicability. Here, we present iDamIDseq, a protocol that improves specificity and sensitivity by inver...

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Hauptverfasser: Gutiérrez Triana, José Arturo (VerfasserIn) , Mateo, Juan L. (VerfasserIn) , Ibberson, David (VerfasserIn) , Ryu, Soojin (VerfasserIn) , Wittbrodt, Joachim (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 6 September 2016
In: Development
Year: 2016, Jahrgang: 143, Heft: 22, Pages: 4272-4278
ISSN:1477-9129
DOI:10.1242/dev.139261
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1242/dev.139261
Verlag, lizenzpflichtig, Volltext: https://dev.biologists.org/content/143/22/4272
Volltext
Verfasserangaben:Jose Arturo Gutierrez-Triana, Juan L. Mateo, David Ibberson, Soojin Ryu and Joachim Wittbrodt

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520 |a Skip to Next Section - DNA adenine methyltransferase identification (DamID) has emerged as an alternative method to profile protein-DNA interactions; however, critical issues limit its widespread applicability. Here, we present iDamIDseq, a protocol that improves specificity and sensitivity by inverting the steps DpnI-DpnII and adding steps that involve a phosphatase and exonuclease. To determine genome-wide protein-DNA interactions efficiently, we present the analysis tool iDEAR (iDamIDseq Enrichment Analysis with R). The combination of DamID and iDEAR permits the establishment of consistent profiles for transcription factors, even in transient assays, as we exemplify using the small teleost medaka (Oryzias latipes). We report that the bacterial Dam-coding sequence induces aberrant splicing when it is used with different promoters to drive tissue-specific expression. Here, we present an optimization of the sequence to avoid this problem. This and our other improvements will allow researchers to use DamID effectively in any organism, in a general or targeted manner. 
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