BIOL 2020 Lecture Notes - Lecture 18: Pyrophosphate, Gluconeogenesis, Phosphoenolpyruvic Acid
29 Apr 2016
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Document Summary
R is the gas constant (8. 314472 j x k-1 x mol-1) Go" (as opposed to g) refers to the change in gibbs free energy at standard state: keq for the reactants is that for 25oc (t = 298 k, pressure is equal to 1 atm, ph is 7. 0. In steps 4, 5, and 6, reactions that are normally endergonic are able to occur favourably in the cell because the product is converted to the next product in the next step of the pathway. Exergonic reactions under normal conditions but inside the cell they can proceed since as the products are being formed, they are used up in the next step. In almost all cases, a dehydrogenase enzyme is a dehydration reaction that involves the oxidation/ reduction of nad+/ Step 7 is one of two atp synthesizing. Step 9 is dehydration since water is being removed. Which steps are reversible: everything but steps 1, 3, 10.
