The theory of bio-energy transport in the protein molecules and its properties

The bio-energy transport is a basic problem in life science and related to many biological processes. Therefore to establish the mechanism of bio-energy transport and its theory have an important significance. Based on different properties of structure of α-helical protein molecules some theories of bio-energy transport along the molecular chains have been proposed and established, where the energy is released by hydrolysis of adenosine triphosphate (ATP). A brief survey of past researches on different models and theories of bio-energy, including Davydovʼs, Takenoʼs, Yomosaʼs, Brown et al.ʼs, Schweitzerʼs, Cruzeiro-Hanssonʼs, Fornerʼs and Pangʼs models were first stated in this paper. Subsequently we studied and reviewed mainly and systematically the properties, thermal stability and lifetimes of the carriers (solitons) transporting the bio-energy at physiological temperature 300 K in Pangʼs and Davydovʼs theories. From these investigations we know that the carrier (soliton) of bio-energy transport in the α-helical protein molecules in Pangʼs model has a higher binding energy, higher thermal stability and larger lifetime at 300 K relative to those of Davydovʼs model, in which the lifetime of the new soliton at 300 K is enough large and belongs to the order of 10−10 s or τ/τ0⩾700τ/τ0⩾700. Thus we can conclude that the soliton in Pangʼs model is exactly the carrier of the bio-energy transport, Pangʼs theory is appropriate to α-helical protein molecules.

► Investigating the properties of bio-energy released by ATP hydrolysis. ► Investigating the mechanism of bio-energy transport in protein molecules. ► Finding the solutions dynamic equation of bio-energy transport in protein molecules. ► Obtaining the properties of bio-energy transport in protein molecules. ► Giving the correctness of theory of bio-energy transport in protein molecules.