ource of ener rgy for muscle口 Hydrolysis of adenosine triphosphate(ATP) creating adenosine diphosphate(ADP) ATP →ADP+P ATPase △G=AGn-67l ATP ADPIIP or approximately -25 kT(displacement -5 nm) Power/weight same as an automobile engineSource of energy for muscle� Hydrolysis of adenosine triphosphate (ATP) creating adenosine diphosphate (ADP): ATP æ Æ actomy æææsin ADP + Pi ATPase Ê [ATP] ˆ DG = DG0 - kT lnÁ ˜ Ë [ADP][ ] Pi ¯ or approximately -25 kT (displacement ~ 5 nm) Power/weight ~ same as an automobile engine 4