Abstract
Chromatin immunoprecipitation (ChIP) coupled with genome tiling array hybridization (ChIP-chip) and ChIP followed by massively parallel sequencing (ChIP-seq) are high-throughput approaches to profiling genome-wide protein-DNA interactions. Both technologies are increasingly used to study transcription-factor binding sites and chromatin modifications. CisGenome is an integrated software system for analyzing ChIP-chip and ChIP-seq data. This unit describes basic functions of CisGenome and how to use them to find genomic regions with protein-DNA interactions, visualize binding signals, associate binding regions with nearby genes, search for novel transcription-factor binding motifs, and map existing DNA sequence motifs to user-supplied genomic regions to define their exact locations.