The end goal: understanding exactly what happens to sugars that are transported into the cell, and what byproducts result from these metabolic pathways, and their significance to the final product whether it be wine, mead or beer. You should be able to understand, and navigate this superpathway map by the end of these:
free H+ ion, and represents the last expenditure of ATP in the process. This is also the point of no return for the process so far, F1,6BP has to continue through the process in order to be beneficial
Once pyruvate is created, the cell will shunt it through different metabolic pathways to meat the cells needs given it's present state. This entire process, glycolysis, has several branch points where certain intermediates can follow other metabolic pathways, creating many more compounds than just ethanol. These branch points will be discussed in following articles.
- Yeast can use glucose or fructose as an energy source by converting it to different compounds and "capturing" the released energy for other uses
- These processes all require enzymes, which are made out of amino acids, showing how important amino acids truly are
- Lots of phosphate groups are used throughout this and other biochemical processes, showing that yeast need some form of PO4- for healthy metabolism, whether it's from DAP or organic sources
- Magnesium is also important for yeast (and other organisms') metabolism due to it's use throughout the process
- Zinc is needed at a very critical point in glycolysis, and we will see its pivotal role in ethanol fermentation as well, making proper levels very important for yeast health
- From a single hexose, two pyruvate molecules, and a net gain of two ATP molecules, can be produced, making this process very energy efficient
- Most importantly, glycolysis is only a single pathway that molecules can follow that branches out into many other pathways and fuels almost every action the cell can make; while its individual importance can not be underestimated, it is the holistic understanding of all the branches, and where they lead, that truly matters.