Fosforylaatiojännitteet
Fosforylaatiojännitteet, or phosphorylation potentials, refer to the concentration-dependent differences in the free energy of ATP hydrolysis in biological systems. ATP (adenosine triphosphate) is the primary energy currency of the cell, and its hydrolysis to ADP (adenosine diphosphate) and inorganic phosphate (Pi) releases energy. However, the actual energy released is not constant; it varies with the prevailing concentrations of ATP, ADP, and Pi within a specific cellular compartment.
The standard free energy of hydrolysis (ΔG°') is a fixed value under defined laboratory conditions. In contrast,
These potentials are crucial for driving energetically unfavorable cellular processes, such as biosynthesis, active transport, and