Articles | Volume 12, issue 16
Biogeosciences, 12, 4913–4937, 2015
https://doi.org/10.5194/bg-12-4913-2015
Biogeosciences, 12, 4913–4937, 2015
https://doi.org/10.5194/bg-12-4913-2015

Research article 19 Aug 2015

Research article | 19 Aug 2015

Fundamental molecules of life are pigments which arose and co-evolved as a response to the thermodynamic imperative of dissipating the prevailing solar spectrum

K. Michaelian and A. Simeonov

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Short summary
We show that the fundamental molecules of life (those common to all three domains of life: Archaea, Bacteria, Eukaryota), including nucleotides, amino acids, enzyme cofactors, and porphyrin agglomerates, absorb light strongly from 230 to 280nm (in the UV-C) and have chemical affinity to RNA and DNA. This supports the "thermodynamic dissipation theory for the origin of life", which suggests that life arose and evolved as a response to dissipating the prevailing Archaean UV-C sunlight into heat.
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