title: On sulfhydrylation of O-acetylserine and O-acetylhomoserine in homocysteine synthesis in yeast.
abstract: Considerable differences in the activities of cysteine and homocysteine synthase (EC 4.2.99.8), and in the ratio of these activities were observed in yeast strains representing different genera and species. This suggests that homocysteine synthesis directly from O-acetylhomoserine may predominate in some strains, whereas in the others homocysteine is formed from cysteine via cystathionine.
mesh_terms: D002175:Candida / Q000201:enzymology; D003547:Cysteine Synthase / Q000378:metabolism*; D006710:Homocysteine / Q000096:biosynthesis*; D008190:Lyases / Q000378:metabolism*; D012442:Saccharomycopsis / Q000201:enzymology; D013045:Species Specificity; D013438:Sulfhydryl Compounds / Q000378:metabolism; D015003:Yeasts / Q000201:enzymology*
chemical_list: D013438:Sulfhydryl Compounds; D006710:Homocysteine; D003547:Cysteine Synthase; D008190:Lyases