Results 51 to 60 of about 924,617 (340)

The Prebiotic Kitchen: A Guide to Composing Prebiotic Soup Recipes to Test Origins of Life Hypotheses

open access: yesLife, 2021
“Prebiotic soup” often features in discussions of origins of life research, both as a theoretical concept when discussing abiological pathways to modern biochemical building blocks and, more recently, as a feedstock in prebiotic chemistry experiments ...
Lena Vincent   +4 more
doaj   +1 more source

Chirality in Organic and Mineral Systems: A Review of Reactivity and Alteration Processes Relevant to Prebiotic Chemistry and Life Detection Missions

open access: yesSymmetry, 2022
Chirality is a central feature in the evolution of biological systems, but the reason for biology’s strong preference for specific chiralities of amino acids, sugars, and other molecules remains a controversial and unanswered question in origins of life ...
Carina Lee   +6 more
semanticscholar   +1 more source

Prebiotic Chemistry of Pluto [PDF]

open access: yesAstrobiology, 2019
We present the case for the presence of complex organic molecules, such as amino acids and nucleobases, formed by abiotic processes on the surface and in near-subsurface regions of Pluto. Pluto's surface is tinted with a range of non-ice substances with colors ranging from light yellow to red to dark brown; the colors match those of laboratory organic ...
Cruikshank, D.P.   +18 more
openaire   +7 more sources

Did minerals perform prebiotic combinatorial chemistry?

open access: bronzeChemistry & Biology, 1996
It has long been suspected that mineral surfaces may have been important in prebiotic chemistry. The recent demonstrations of extended oligomerization of nucleotides, amino acids and carbohydrates on mineral surfaces add support to the potential prebiotic importance of minerals, but leave a number of questions unanswered.
Alan W. Schwartz
openalex   +5 more sources

Prebiotic Chemistry that Could Not Not Have Happened. [PDF]

open access: yesLife (Basel), 2019
We present a direct route by which RNA might have emerged in the Hadean from a fayalite–magnetite mantle, volcanic SO2 gas, and well-accepted processes that must have created substantial amounts of HCHO and catalytic amounts of glycolaldehyde in the Hadean atmosphere.
Benner SA, Kim HJ, Biondi E.
europepmc   +4 more sources

Automated Exploration of Prebiotic Chemical Reaction Space: Progress and Perspectives

open access: yesLife, 2021
Prebiotic chemistry often involves the study of complex systems of chemical reactions that form large networks with a large number of diverse species.
Siddhant Sharma   +3 more
doaj   +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

Atmospheric Prebiotic Chemistry and Organic Hazes [PDF]

open access: greenCurrent Organic Chemistry, 2013
Earth's atmospheric composition at the time of the origin of life is not known, but it has often been suggested that chemical transformation of reactive species in the atmosphere was a significant source of prebiotic organic molecules. Experimental and theoretical studies over the past half century have shown that atmospheric synthesis can yield ...
M. G. Trainer
openalex   +4 more sources

Prebiotic Chemistry and the Origin of the RNA World [PDF]

open access: greenCritical Reviews in Biochemistry and Molecular Biology, 2004
The demonstration that ribosomal peptide synthesis is a ribozyme-catalyzed reaction makes it almost certain that there was once an RNA World. The central problem for origin-of-life studies, therefore, is to understand how a protein-free RNA World became established on the primitive Earth. We first review the literature on the prebiotic synthesis of the
Robyn E. O’Hehir
openalex   +4 more sources

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

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