“…Since then, a number of apoptosis-related genes have been discovered and characterized in yeast, including the caspase-like protease Yca1 (2), the inhibitor of apoptosis (IAP) 2 Bir1 (3, 4), the apoptosis-inducing factor Aif1 (5, 6), the BH3-containing Bcl-2 family homologue YBP (7), and others (8). To date, Yca1, also known as Mca1 (2) and Yor197w (9), remains the only identified metacaspase in S. cerevisiae.…”