Enol esters of 2-substituted-3-oxoalkanoates of (Z)-configuration were reduced by bakers' yeast to chiral 2-substituted-3-hydroxyalkanoates. The sy/f-selectivities of this reaction increased compared with those of the reduction of the corresponding racemic keto esters. The reaction mayproceed via an asymmetric hydrolysis of the enol esters, followed by the reduction of the resulting carbonyl gr...

Jeener and Brachet (1) found that the absorption of inorganic phosphate by bakers’ yeast is greatly enhanced when the incubation of the yeast in a phosphate-containing nutrient (period of P absorption) is preceded by a period of incubation in a medium devoid of phosphate (period of P starvation). The Belgian authors had already demonstrated that a large part of the absorbed phosphate appears in...

Catalase from bakers’ yeast has been purified to homogeneity in the analytical ultracentrifuge and in gel electrophoresis; sedimentation measurements permit an estimation of its molecular weight as 248,000. Under denaturing conditions, polyacrylamide gel electrophoresis revealed dissociation of a major component of molecular weight 61,000, which constituted 90% of the total protein of the stain...