Abstract

The in vivo footprinting method identifies protein-targeted DNA regions under different conditions such as carbon sources. Dimethyl sulfate (DMS) generates methylated purine bases at DNA sites which are not bound by proteins or transcription factors. The DNA is cleaved by HCl, and the resulting DNA fragments are 5'-end [6-FAM]-labeled by a linker-mediated PCR (LM-PCR). Fluorescent fragments are separated and analyzed on a capillary sequencer, followed by automated data analysis using the software tool ivFAST.

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