The Production of Bio-energy and its Properties of Transport in the Living systems

We here introduced the form of bio-energy in living system and eluciduted again the new theory of bio-energy transport along protein molecules in living systems based on the changes of structure and conformation of molecules arising from the energy, which is released by hydrolysis of adenosine triphosphate (ATP). In this theory, the Davydov’s Hamiltonian and wave function of the systems are simultaneously improved and extended. A new interaction have been added into the original Hamiltonian. The original wave function of the excitation state of single particles have been replaced by a new wave function of two-quanta quasicoherent state. In such a case, bio-energy is carried and transported by the new soliton along protein molecular chains. The soliton is formed through self- trapping of two excitons interacting amino acid residues. The exciton is generated by vibrations of amide-I (C=O stretching) arising from the energy of hydrolysis of ATP. The properties of the soliton are extensively studied by analytical method and its lifetime for a wide ranges of parameter values relevant to protein molecules is calculated using the nonlinear quantum perturbation theory. The lifetime of the new soliton at the biological temperature 300 K is enough large and belongs to the order of 10- 10 second orτ/τ0≥700. The different properties of the new soliton are further studied. The results show that the new soliton in the new model is a better carrier of bio-energy transport and it can play an important role in biological processes. This model is a candidate of the bio-energy transport mechanism in protein molecules. Keywords: Form; Living system; Bio-energy; protein; Biological energy; Soliton; ATP hydrolysis; Amide; Exciton; Life time; Amino acid; Quasi-coherent state