title: Energy transport mechanism in the form of proton soliton in a one-dimensional hydrogen-bonded polypeptide chain.
abstract: The dynamics of protons in a one-dimensional hydrogen-bonded (HB) polypeptide chain (PC) is investigated theoretically. A new Hamiltonian is formulated with the inclusion of higher-order molecular interactions between peptide groups (PGs). The wave function of the excitation state of a single particle is replaced by a new wave function of a two-quanta quasi-coherent state. The dynamics is governed by a higher-order nonlinear Schrödinger equation and the energy transport is performed by the proton soliton. A nonlinear multiple-scale perturbation analysis has been performed and the evolution of soliton parameters such as velocity and amplitude is explored numerically. The proton soliton is thermally stable and very robust against these perturbations. The energy transport by the proton soliton is more appropriate to understand the mechanism of energy transfer in biological processes such as muscle contraction, DNA replication, and neuro-electric pulse transfer on biomembranes.
authors.affiliation: Department of Physics, School of Basic and Applied Sciences, Central University of Tamilnadu, Thiruvarur, 610 101, Tamilnadu, India. louiskavitha@yahoo.co.in.|The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy. louiskavitha@yahoo.co.in.
authors.forename: L
authors.initials: L
authors.lastname: Kavitha
authors.affiliation: Department of Physics, Periyar University, Salem, 636 011, Tamilnadu, India.
authors.forename: R
authors.initials: R
authors.lastname: Priya
authors.affiliation: Department of Physics, School of Basic and Applied Sciences, Central University of Tamilnadu, Thiruvarur, 610 101, Tamilnadu, India.
authors.forename: N
authors.initials: N
authors.lastname: Ayyappan
authors.affiliation: Center for Nanoscience and Nanotechnology, Periyar University, Salem, 636 011, Tamilnadu, India.|Department of Chemistry, Periyar University, Salem, 636 011, Tamilnadu, India.
authors.forename: D
authors.initials: D
authors.lastname: Gopi
authors.affiliation: Department of Physics, Periyar University, Salem, 636 011, Tamilnadu, India.
authors.forename: S
authors.initials: S
authors.lastname: Jayanthi
mesh_terms: D004735:Energy Transfer; D006860:Hydrogen Bonding; D056004:Molecular Dynamics Simulation; D017711:Nonlinear Dynamics; D010455:Peptides / Q000737:chemistry* / Q000378:metabolism*; D011522:Protons
chemical_list: D010455:Peptides; D011522:Protons
keywords: Hydrogen bond; Proton transfer; Solitons