ABSTRACT
The way Saccharomyces cerevisiae (the yeast par excellence for alcoholic fermentation), utilizes oxygen could be described as follows:
1) in the mitochondrial respiratory chain, oxygen acts as acceptor of the hydrogen (protons) generated from glycolysis;
2) as a reagent in many biosynthetic reactions, oxygen acts as a modulator of reactions such as the oxidation of stearoylCoA to unsaturated oleyl-CoA, cyclization of squalene (Fig. 63 b,c), and the (lxidation of sterols involving de-methylation, de-saturation of the B ring and methylation at position 24.
