Results 31 to 40 of about 27,504 (316)

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

Nature 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, Iris B. A. Smokers, Wilhelm T. S. Huck   +2 more
doaj   +1 more source

The Effects of Iron on In Silico Simulated Abiotic Reaction Networks

Molecules, 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

AGU 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, Khaled Abdelazim, Gabriella G. Lozano, Sangita Mandal, Cindy Y. Zhou, Corinna L. Kufner, Zoe R. Todd, Nita Sahai, Dimitar D. Sasselov   +8 more
doaj   +1 more source

Prebiotic Reaction Networks in Water

Life, 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, Zachary R. Adam, Albert C. Fahrenbach   +2 more
doaj   +1 more source

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

Life, 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, Adam J. Coggins, Matthew W. Powner   +2 more
doaj   +1 more source

Organic compounds in fluid inclusions of Archean quartz-Analogues of prebiotic chemistry on early Earth. [PDF]

PLoS ONE, 2017
The origin of life is still an unsolved mystery in science. Hypothetically, prebiotic chemistry and the formation of protocells may have evolved in the hydrothermal environment of tectonic fault zones in the upper continental crust, an environment where ...
Ulrich Schreiber, Christian Mayer, Oliver J Schmitz, Pia Rosendahl, Amela Bronja, Markus Greule, Frank Keppler, Ines Mulder, Tobias Sattler, Heinz F Schöler   +9 more
doaj   +1 more source

Scum of the Earth: A Hypothesis for Prebiotic Multi-Compartmentalised Environments

Life, 2021
Compartmentalisation by bioenergetic membranes is a universal feature of life. The eventual compartmentalisation of prebiotic systems is therefore often argued to comprise a key step during the origin of life.
Craig Robert Walton, Oliver Shorttle
doaj   +1 more source

DNA Renaturation at the Water-Phenol Interface [PDF]

, 2003
We study DNA adsorption and renaturation in a water-phenol two-phase system, with or without shaking. In very dilute solutions, single-stranded DNA is adsorbed at the interface in a salt-dependent manner.
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The Origin of Life [PDF]

, 1974
The origin of life is in a sense a genetic problem, for, as H. J. Muller pointed out many years ago, the essential attribute that identifies living matter is its capacity to replicate itself and its variants (1). Because this uniquely biological property
Horowitz, N. H., Hubbard, Jerry S.
core   +1 more source

Phosphorus in prebiotic chemistry [PDF]

Philosophical 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