A new hypothesis for the evolution of biological electron transport |
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Authors: | Herrick Baltscheffsky |
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Affiliation: | 1. Botaniska och Biokemiska institutionerna, Stockholms universitet, 50, Stockholm, Sweden
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Abstract: | A new hypothesis for the evolution of biological electron transport is presented. According to this hypothesis biological electron transport originated close to the potential of the hydrogen electrode and evolved in various advantageous directions including, when molecular oxygen became available on the Earth, that of the oxygen electrode. This implies stepwise evolution along and across the potential scale. The hypothesis is based mainly on existing information obtained from studies of primary and tertiary structural relationships of proteins. It is hoped to provide a framework for closer understanding of both evolution and mechanisms of cellular oxidation-reduction as well as energy coupling reactions. |
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