MITOMI: A Microfluidic Platform for In Vitro Characterization of Transcription Factor–DNA Interaction
- 21 August 2011
- book chapter
- protocol
- Published by Springer Science and Business Media LLC in Methods in molecular biology (Clifton, N.J.)
- Vol. 786, 97-114
- https://doi.org/10.1007/978-1-61779-292-2_6
Abstract
Gene regulatory networks (GRNs) consist of transcription factors (TFs) that determine the level of gene expression by binding to specific DNA sequences. Mapping all TF–DNA interactions and elucidating their dynamics is a major goal to generate comprehensive models of GRNs. Measuring quantitative binding affinities of large sets of TF–DNA interactions requires the application of novel tools and methods. These tools need to cope with the difficulties related to the facts that TFs tend to be expressed at low levels in vivo, and often form only transient interactions with both DNA and their protein partners. Our approach describes a high-throughput microfluidic platform with a novel detection principle based on the mechanically induced trapping of molecular interactions (MITOMI). MITOMI allows the detection of transient and low-affinity TF–DNA interactions in high-throughput.This publication has 10 references indexed in Scilit:
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