Geochemical Sources and Availability of Amidophosphates on the Early Earth. (8th May 2019)

• Record Type: Journal Article
• Authors: Gibard, Clémentine; Gorrell, Ian B.; Jiménez, Eddy I.; Kee, Terence P.; Pasek, Matthew A.; Krishnamurthy, Ramanarayanan
• Is Part Of: Angewandte Chemie. Volume 131:Number 24(2019)
• Page Start: 8235
• Page End: 8239
• Publication Date: 2019-05-08
• Subjects: Amidophosphate -- Diamidophosphate -- Frühe Erde -- Phosphorylierung -- Präbiotische Chemie; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201903808
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Phosphorylation of (pre)biotically relevant molecules in aqueous medium has recently been demonstrated using water‐soluble diamidophosphate (DAP). Questions arise relating to the prebiotic availability of DAP and other amidophosphosphorus species on the early earth. Herein, we demonstrate that DAP and other amino‐derivatives of phosphates/phosphite are generated when Fe3 P (proxy for mineral schreibersite), condensed phosphates, and reduced oxidation state phosphorus compounds, which could have been available on early earth, are exposed to aqueous ammonia solutions. DAP is shown to remain in aqueous solution under conditions where phosphate is precipitated out by divalent metals. These results show that nitrogenated analogues of phosphate and reduced phosphite species can be produced and remain in solution, overcoming the thermodynamic barrier for phosphorylation in water, increasing the possibility that abiotic phosphorylation reactions occurred in aqueous environments on early earth. Abstract : Phosphorylierung auf der frühen Erde : Amidophosphate, für die gezeigt wurde, dass sie (prä)biotisch relevante Moleküle phosphorylieren, werden auf den gleichen Reaktionswegen produziert, auf denen Phosphate entstehen, wenn verschiedene Phosphorquellen mit wässrigem Ammoniak umgesetzt werden. Der Befund zeigt, dass wasserlösliche Amidophosphate auf der frühen Erde verfügbar gewesen sein könnten, was die Wahrscheinlichkeit abiotischer Phosphorylierungen auf der frühen Erde erhöht.