Understanding Distal Transcriptional Regulation from Sequence Motif, Network Inference and Interactome Perspectives

Details Understanding Distal Transcriptional Regulation from Sequence Motif, Network Inference and Interactome Perspectives Understanding Distal Transcriptional Regulation from Sequence Motif, Network Inference and Interactome Perspectives

2008-03-21

arxiv.org/abs/0803.3180v1

Biology

Quantitative Biology

Genomics

Scientific paper

Gene regulation in higher eukaryotes involves a complex interplay between the gene proximal promoter and distal genomic elements (such as enhancers) which work in concert to drive spatio-temporal expression. The experimental characterization of gene regulatory elements is a very complex and resource-intensive process. One of the major goals in computational biology is the \textit{in-silico} annotation of previously uncharacterized elements using results from the subset of known, annotated, regulatory elements. The computational annotation of these hitherto uncharacterized regions would require an identification of features that have good predictive value for regulatory behavior. In this work, we study transcriptional regulation as a problem in heterogeneous data integration, across sequence, expression and interactome level attributes. Using the example of the \textit{Gata2} gene and its recently discovered urogenital enhancers \cite{Khandekar2004} as a case study, we examine the predictive value of various high throughput functional genomic assays in characterizing these enhancers and their regulatory role. Observing results from the application of modern statistical learning methodologies for each of these data modalities, we propose a set of attributes that are most discriminatory in the localization and behavior of these enhancers.

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