prebiotic phosphorus chemistry reconsidered

Details prebiotic phosphorus chemistry reconsidered prebiotic phosphorus chemistry reconsidered

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997oleb...27..505s&link_type=abstract

Origins of Life and Evolution of the Biosphere, v. 27, Issue 5/6, p. 505-512 (1997).

Computer Science

4

Scientific paper

The available evidence indicates that the origin of life on Earth certainly occurred earlier than 3.5 billion years ago and perhaps substantially earlier. The time available for the chemical evolution which must have preceded this event is more difficult to estimate. Both endogenic and exogenic contributions to chemical evolution have been considered; i.e., from chemical reactions in a primitive atmosphere, or by introduction in the interiors of comets and/or meteorites. It is argued, however, that the phosphorus chemistry of Earth's earliest hydrosphere, whether primarily exogenic or endogenic in origin, was most likely dominated by compounds less oxidized than phosphoric acid and its esters. A scenario is presented for the early production of a suite of reactive phosphonic acid derivatives, the properties of which may have foreshadowed the later appearance of biophosphates.

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