The "high Energy" Phosphate Bond
The energy released in ATP hydrolysis,
- ATP4- + H2O → ADP3- + Pi-
at ΔG -36.8 kJ mol−1 is large by biological standards. Pi stands for inorganic phosphate, which is protonated at biological pH. However, it is not large by inorganic standards. The term "high energy" refers to the fact that it is high relative to the amount of energy released in the organic chemical reactions that can occur in living systems.
Read more about this topic: Polyphosphate
Famous quotes containing the words high, energy and/or bond:
“What’s brave, what’s noble,
Let’s do’t after the high Roman fashion,
And make death proud to take us.”
—William Shakespeare (1564–1616)
“The persons who constitute the natural aristocracy, are not found in the actual aristocracy, or, only on its edge; as the chemical energy of the spectrum is found to be greatest just outside of the spectrum.”
—Ralph Waldo Emerson (1803–1882)
“Wedding is great Juno’s crown,
O blessed bond of board and bed!
‘Tis Hymen peoples every town,
High wedlock then be honorèd.
Honor, high honor, and renown
To Hymen, god of every town!”
—William Shakespeare (1564–1616)