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Project description:Aspergillus fumigatus transcription factor AtrR is a critical determinant of the azole resistance phenotype of this organism. AtrR positively regulates expression of a range of genes involved in azole resistance including the ATP-binding cassette transporter-encoding locus abcG1 (cdr1B/abcC) as well as the gene that encodes the enzymatic target of azole drugs cyp51A. Homology searches of A. fumigatus AtrR against a range of fungal species identified highly conserved 25 amino acid region in the carboxy-terminus. To determine the contribution of this region to AtrR function, we prepared a mutant from of the atrR that lacked this region (Δ855-879). We compared the response of an isogenic wild-type strain to a strain expressing the Δ855-879 AtrR derivative using RNA-seq, both in the absence and the presence of voriconazole challenge. The resulting data indicate that this 25 amino acid segment of AtrR is required for expression of some but not all AtrR target genes.
2024-08-08 | GSE267651 | GEO