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- W1842983285 abstract "This chapter describes geometrical properties of H-bonds related to thermodynamic properties. The chapter focuses on the equilibrium values Q0, θ0, and ϕ0 of the three coordinates Qs, θ and ϕ, respectively. They define the geometries of H-bonds X–H···Y at equilibrium. Departing from these equilibrium positions provokes the appearance of “intermonomer” vibrations. The coordinate of the “stretching intermonomer” vibration is then Qs – Q0 and those of the two “bending intermonomer” vibrations are θ – θ0 and ϕ – ϕ0. The three kinds of structures described are representative of the central structuring role of H-bonds that takes on a special importance in molecular biology. The helicoidal double strand of DNA thus displays such stability while at the same time allowing a sufficient reactivity that it appears certainly the best compromise to build a material capable of keeping the genetic memory of all living species and transmitting it to all newly born organisms. Its universality, together with that of the amino acids that compose proteins, is one of the strongest arguments that firmly establish the foundation of the theory of evolution proposed in the 19th century by C. Darwin at an epoch when DNA was unknown. It strongly suggests that all living organisms have a unique and common ancestor cell." @default.
- W1842983285 created "2016-06-24" @default.
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- W1842983285 date "2007-01-01" @default.
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- W1842983285 title "Geometrical Properties of H-Bonds and H-Bonded Organized Supramolecular Structures" @default.
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- W1842983285 doi "https://doi.org/10.1016/b978-044451957-3.50003-2" @default.
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