Yeast genes that were found to confer resistance to acetic, propionic, sorbic, and mycophenolic acids, based on the results of (Desmoucelles et al., 2002; Mira et al., 2009; Mollapour et al., 2004; and our unpublished results) were selected and clustered according to their biological function using the MIPS functional catalog. The classes considered enriched in the different gene lists (associated p-value below 0.01) are shown.