| Literature DB >> 18585359 |
Michael F Berger1, Gwenael Badis, Andrew R Gehrke, Shaheynoor Talukder, Anthony A Philippakis, Lourdes Peña-Castillo, Trevis M Alleyne, Sanie Mnaimneh, Olga B Botvinnik, Esther T Chan, Faiqua Khalid, Wen Zhang, Daniel Newburger, Savina A Jaeger, Quaid D Morris, Martha L Bulyk, Timothy R Hughes.
Abstract
Most homeodomains are unique within a genome, yet many are highly conserved across vast evolutionary distances, implying strong selection on their precise DNA-binding specificities. We determined the binding preferences of the majority (168) of mouse homeodomains to all possible 8-base sequences, revealing rich and complex patterns of sequence specificity and showing that there are at least 65 distinct homeodomain DNA-binding activities. We developed a computational system that successfully predicts binding sites for homeodomain proteins as distant from mouse as Drosophila and C. elegans, and we infer full 8-mer binding profiles for the majority of known animal homeodomains. Our results provide an unprecedented level of resolution in the analysis of this simple domain structure and suggest that variation in sequence recognition may be a factor in its functional diversity and evolutionary success.Entities:
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Year: 2008 PMID： 18585359 PMCID： PMC2531161 DOI： 10.1016/j.cell.2008.05.024
Source DB: PubMed Journal: Cell ISSN： 0092-8674 Impact factor: 41.582