Basic leucine zipper (bZIP) transcription factor%3B required for oxidative stress tolerance%3B activated by H2O2 through the multistep formation of disulfide bonds and transit from the cytoplasm to the nucleus%3B Yap1p is degraded in the nucleus after the oxidative stress has passed%3B mediates resistance to cadmium%3B relative distribution to the nucleus increases upon DNA replication stress%3B YAP1 has a paralog%2C CAD1%2C that arose from the whole genome duplication