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:
“Optimism is the content of small men in high places.”
—F. Scott Fitzgerald (1896–1940)
“The tendencies of the times favor the idea of self-government, and leave the individual, for all code, to the rewards and penalties of his own constitution, which work with more energy than we believe, whilst we depend on artificial restraints.”
—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)