Bisoliton mechanism of electron transport in biological systems

A nonlinear mechanism describing the transport of paired electrons in protein molecules is suggested. It is shown that electron-phonon interaction leads to the pairing of two electrons with local chain deformation in a state called a bisoliton. The parameters of the bisoliton and the stability conditions with respect to its decay into two-soliton state are estimated.I dedicate this paper to the memory of my teacher Professor A.S. Davydov, who attracted me to nonlinear science and was my colleague.