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Name: R. M.
Status: Educator
Grade:  9-12
Location: N/A
Country: United States
Date: March 2005


Question:
I am trying to find out how may Joules (kjoul.) are bound up in the high energy phosphate bond of ATP? In other words when ADP is converted to ATP how much energy is in that new single covalent bond?



Replies:
There are several interesting posts regarding the energy stored by ATP in the NEWTON AAS Molecular Biology Archive

( http://www.newton.dep.anl.gov/askasci/mole00.htm ).

The most directly relevant to your inquiry is a fairly old answer to a question on ATP Energy, in which Dr. Peter Faletra indicates that "the amount of energy released when

[ATP-->ADP+ PHO4~substrate] is about -30.5 kilojoules.mole-1"

( http://www.newton.dep.anl.gov/askasci/mole00/mole00072.htm ).

My apologies for the delay in responding & I hope that this info. is still helpful,

Jeff Buzby, Ph.D.
CHOC Research Institute



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