title: Loss of sporulation ability in a yeast mutant with low proteinase A levels.
mesh_terms: D004171:Diploidy; D010450:Endopeptidases / Q000378:metabolism*; D006238:Haploidy; D006579:Heterozygote; D006720:Homozygote; D009154:Mutation; D012441:Saccharomyces cerevisiae / Q000201:enzymology*; D013045:Species Specificity; D013172:Spores, Fungal / Q000201:enzymology
chemical_list: D010450:Endopeptidases