Prebiotic Phosphorylation Reactions on the Early Earth

Maheen Gull
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Maheen Gull: School of Geoscience, University of South Florida, 4202 E Fowler Ave., Tampa, FL 33620, USA

Challenges, 2014, vol. 5, issue 2, 1-20

Abstract: Phosphorus (P) is an essential element for life. It occurs in living beings in the form of phosphate, which is ubiquitous in biochemistry, chiefly in the form of C-O-P (carbon, oxygen and phosphorus), C-P, or P-O-P linkages to form life. Within prebiotic chemistry, several key questions concerning phosphorus chemistry have developed: what were the most likely sources of P on the early Earth? How did it become incorporated into the biological world to form the P compounds that life employs today? Can meteorites be responsible for the delivery of P? What were the most likely solvents on the early Earth and out of those which are favorable for phosphorylation? Or, alternatively, were P compounds most likely produced in relatively dry environments? What were the most suitable temperature conditions for phosphorylation? A route to efficient formation of biological P compounds is still a question that challenges astrobiologists. This article discusses these important issues related to the origin of biological P compounds.

Keywords: phosphorus; phosphorylation; prebiotic chemistry; mineral catalysis; phosphate esters; meteorites; reduced phosphates; phosphate minerals (search for similar items in EconPapers)
JEL-codes: A00 C00 Z00 (search for similar items in EconPapers)
Date: 2014
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