For the reactions shown in Figure 3−21, sketch an energy diagram similar to that in Figure 3−12 for the two reactions alone and for the combined reactions. Indicate the standard free-energy changes for the reactions X → Y, Y → Z, and X → Z in the graph. Indicate how enzymes that catalyze these reactions would change the energy diagram.

Transcribed Image Text:

(A) (C) X X unco equilibrium point for X → Y reaction sann Y (B) Y Z equilibrium point for Y→ Z reaction i Z 1212 equilibrium point for the coupled reaction X→Y→ Z