Pdr1p

Pdr1p (Pleiotropic Drug Resistance 1 protein) is a regulatory protein found in certain yeast, particularly in *Saccharomyces cerevisiae* (baker's yeast). It is a transcription factor that plays a crucial role in the cellular response to various drugs and toxic compounds. Pdr1p is involved in the regulation of a number of genes associated with multidrug resistance, which helps the yeast cell to survive in the presence of potentially harmful substances.