ChIP-seq analysis of transcription factor AtrR binding across the Aspergillus fumigatus genome

To determine the genomic binding sites for the Aspergillus fumigatus transcription factor AtrR, we utilized three different strains. One was the wild-type AfS35 which contains a wild-type copy of atrR but lacks any HA tag. The other two are both derived from AfS35 but contain a 3X HA tag replacing the stop codon of atrR. These strains are SPF89 and SPF112, respectively. SPF89 uses the wild-type atrR promoter to drive expression of the epitope-tagged allele while SPF112 uses the much strong hspA promoter to drive production of the same protein. ChIP-seq using AtrR-3X HA expressed from either the wild-type or strong hspA promoter