The ammonium ion also serves as an allosteric regulator for one of the enzymes used in glycolysis .
The ammonium ion also may also have an effect on how the yeast cell transports glucose and fructose into the cell .
The ammonium ion also serves as an allosteric regulator for one of the enzymes used in glycolysis and may also have an effect on how the yeast cell transports glucose and fructose into the cell .