[Estimation of the amount of energy transformed in the actomyosin--ATP system according to kinetics findings].
A kinetic scheme for actomyosin ATPase reaction, including two different states of the energy-rich actomyosin intermediate and different ways of its formation and decomposition, is considered. The energy, liberated in this reaction, amounts to 9 kcal. mol-1. Energy liberation is coupled with myosin head rotation. The energy-rich intermediate is stabilized by hindrances to head motion. By this mechanism the energy transduction in a filamentous actomyosin system can occur only after a dissociation act, and an ordered cyclical reaction can take place.
D000205:Actomyosin; D000255:Adenosine Triphosphate; D055598:Chemical Phenomena; D002621:Chemistry; D004735:Energy Transfer; D007700:Kinetics
D000255:Adenosine Triphosphate; D000205:Actomyosin
Otsenka velichiny énergii, preobrazuenoĭ v sisteme aktomiozin--ATF, op dannym kinetiki