The transcriptional response of Saccharomyces cerevisiae to proapoptotic concentrations of Pichia membranifaciens killer toxin

► PMKT has been reported to have antimicrobial activity against yeasts. ► Higher doses of PMKT were ionophoric whereas lower doses were proapoptotic. ► The transcriptional response was also different when low or high doses were used. ► Genes related with oxidative stress were transcribed in response to proapototic doses.