Results 31 to 40 of about 10,842 (176)

The Chemistry of Branched Condensed Phosphates [PDF]

open access: yes, 2021
Our manuscript explores the uncharted territory of the linear branched ultraphosphates by developing and combining synthesis, purification, analysis, and computational approaches.
Andreas, Mayer   +9 more
core   +1 more source

A robotic prebiotic chemist probes long term reactions of complexifying mixtures

open access: yesNature Communications, 2021
The transition of prebiotic chemistry to present-day chemistry lasted a very long period of time, but the current laboratory investigations of this process are mostly limited to a couple of days.
Silke Asche   +4 more
doaj   +1 more source

A physicochemical orthophosphate cycle via a kinetically stable thermodynamically activated intermediate enables mild prebiotic phosphorylations

open access: yesNature Communications, 2021
Transfer of scarce phosphate to organic molecules is a significant challenge for prebiotic chemistry. Here authors show a prebiotic physicochemical cycle to activate orthophosphate and via a kinetically stable, thermodynamically activated molecule ...
Oliver R. Maguire   +2 more
doaj   +1 more source

The Effects of Iron on In Silico Simulated Abiotic Reaction Networks

open access: yesMolecules, 2022
Iron is one of the most abundant elements in the Universe and Earth’s surfaces, and undergoes a redox change of approximately 0.77 mV in changing between its +2 and +3 states.
Sahil Rajiv Shahi, H. James Cleaves
doaj   +1 more source

Geochemical and Photochemical Constraints on S[IV] Concentrations in Natural Waters on Prebiotic Earth

open access: yesAGU Advances, 2023
Aqueous S[IV] species (HSO3−, SO32−) derived from volcanogenic atmospheric SO2 are important to planetary habitability through their roles in proposed origins‐of‐life chemistry and influence on atmospheric sulfur haze formation, but the early cycling of ...
Sukrit Ranjan   +8 more
doaj   +1 more source

Thermally Accessible Prebiotic Pathways for Forming RNA and Protein Precursors [PDF]

open access: yes, 2022
The search for prebiotic chemical pathways to biologically relevant molecules is a long- standing puzzle that has generated a menagerie of competing hypotheses with limited experimental prospects for falsification.
Qiyuan, Zhao   +2 more
core   +1 more source

Prebiotic Reaction Networks in Water

open access: yesLife, 2020
A prevailing strategy in origins of life studies is to explore how chemistry constrained by hypothetical prebiotic conditions could have led to molecules and system level processes proposed to be important for life’s beginnings. This strategy has yielded
Quoc Phuong Tran   +2 more
doaj   +1 more source

Phosphorus in prebiotic chemistry [PDF]

open access: yesPhilosophical Transactions of the Royal Society B: Biological Sciences, 2006
The prebiotic synthesis of phosphorus-containing compounds—such as nucleotides and polynucleotides—would require both a geologically plausible source of the element and pathways for its incorporation into chemical systems on the primitive Earth. The mineral apatite, which is the only significant source of phosphate on Earth, has long been thought to be
openaire   +2 more sources

A Chemist’s Perspective on the Role of Phosphorus at the Origins of Life

open access: yesLife, 2017
The central role that phosphates play in biological systems, suggests they also played an important role in the emergence of life on Earth. In recent years, numerous important advances have been made towards understanding the influence that phosphates ...
Christian Fernández-García   +2 more
doaj   +1 more source

A Universal Geochemical Scenario for Formamide Condensation and Prebiotic Chemistry [PDF]

open access: yesChemistry - A European Journal, 2019
Ernesto Di Mauro   +2 more
exaly   +2 more sources

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