Describe the structure of the $ATPase$ enzyme.

(N/A) The $ATPase$ enzyme consists of two major components:
- $F_{0}$: This part is embedded in the thylakoid membrane and forms a transmembrane channel that facilitates the diffusion of protons ($H^+$ ions) across the membrane.
- $F_{1}$: This portion protrudes on the outer surface of the thylakoid membrane,specifically on the side facing the stroma.
- Mechanism: The breakdown of the proton gradient provides sufficient energy to induce a conformational change in the $F_{1}$ particle of the $ATPase$ enzyme,which catalyzes the synthesis of $ATP$ molecules from $ADP$ and inorganic phosphate $(Pi)$.