The Chemical Potentials of Hydrothermal Systems and the Formation of Coupled Modular Metabolic Pathways

Marakushev, S.A.; Belonogova, O.V.

Авторы: Marakushev S.A., Belonogova O.V.
Журнал: Biophysics
Том: 60
Номер: 4
Год издания: 2015
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 542
Последняя страница: 552
DOI: 10.1134/S0006350915040168
Аннотация: According to J.W. Gibbs, the number of independent components is the smallest number of those chemical components whose combination yields the compositions of all possible phases of a system; at the first stages of the development of the primary metabolism of a threecomponent C–H–O system, the source of energy for it consists of various hydrocarbons and molecular hydrogen. Under the Archean hydrothermal conditions via the energy of the chemical potential of phosphorus, the threecomponent C–H–O system was transformed into a fourcomponent C–H–O–P system with the formation of gluconeogenesis, which became the basis for supplementing the protometabolism with energy and for the formation of a new cycle of CO2 fixation (the reductive pentosephosphate pathway). It is shown that modular constructions of the central metabolism of the C–H–O–P system are formed from parageneses (associations) of certain substances, and the emerging modules, in turn, are in paragenesis with each other under definite physical and chemical hydrothermal conditions. Malate, oxaloacetate, pyruvate, and phosphoenolpyruvate make up a reversible “turnstilelike” mechanism for switching the direction of a reaction.
Добавил в систему: Маракушев Сергей Алексеевич

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