On the Prebiotic Role of Iron and Sulfur

Details On the Prebiotic Role of Iron and Sulfur On the Prebiotic Role of Iron and Sulfur

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997oleb...27..481o&link_type=abstract

Origins of Life and Evolution of the Biosphere, v. 27, Issue 5/6, p. 481-484 (1997).

Physics

Scientific paper

Thermodynamic data (Sillén, L. G.: 1966, Arkiv Kemi, 25, 159) indicate that there is little support for the idea that metabolic sulfur cycles were involved in prebiotic and early life processes, since under reducing conditions the `equilibrium' concentration of sulfur in the primordial seas should have been very low, < 10^-8 M. However, it is suggested that metabolic sulfur cycles may have become important when oxygen evolved, when iron(II) ions disappeared from the seas, and when large amounts of sulfur were released from their iron sulfide sources.

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