Description
We provide data from several targeted deletions of transcriptional enhancer clusters within mouse F1 embryonic stem (ES) cells.  We targeted these regions for deletion with CRISPR/Cas9 genome editing tools.  We demonstrate through heterozygous enhancer cluster deletion and  allele specific RNA-seq that enhancer clusters differ in their regulatory activity as the magnitude of the observed change in transcription upon enhancer cluster deletion varies greatly. Overall design: Strand specific RNA-seq after heterozygous or homozygous enhancer cluster deletion in mouse F1 ES cells (M. musculus129 x M. castaneus)