Results 11 to 20 of about 31,847 (287)
Komatiites as Complex Adsorption Surfaces for Amino Acids in Prebiotic Environments, a Prebiotic Chemistry Essay [PDF]
Life, 2022 Komatiites represent the oldest known terrestrial rocks, and their composition has been cataloged as the closest to that of the first terrestrial crust after the cooling of the magma ocean.
Abigail E. Cruz-Hernández +3 more
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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
Alan W. Schwartz
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Life, 2022 The origin of life on Earth required myriads of chemical and physical processes. These include the formation of the planet and its geological structures, the formation of the first primitive chemicals, reaction, and assembly of these primitive chemicals ...
Arpita Saha +4 more
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Prebiotic Chemistry of Pluto [PDF]
Astrobiology, 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 ...
D. P. Cruikshank +18 more
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The evolution of the surface of the mineral schreibersite in prebiotic chemistry
Physical Chemistry Chemical Physics, 2016 We demonstrate a synthesis of the meteoritic mineral schreibersite (Fe,Ni)3P, study its surface chemistry, and show prebiotic phosphorylation.
Nikita L. La Cruz +8 more
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Chemistry of Homocysteine Thiolactone in A Prebiotic Perspective [PDF]
Life, 2019 Homocysteine is a non-proteinogenic sulfur-containing amino acid. Like cysteine, it can form disulfide bridges and complex metallic cations. It is also closely related to methionine, the first amino acid in the synthesis of all contemporary proteins ...
Ibrahim Shalayel, Yannick Vallée
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Atmospheric Constraints on the Surface UV Environment of Mars at 3.9 Ga Relevant to Prebiotic Chemistry [PDF]
, 2017 Recent findings suggest Mars may have been a clement environment for the emergence of life, and may even have compared favorably to Earth in this regard. These findings have revived interest in the hypothesis that prebiotically important molecules or even nascent life may have formed on Mars and been transferred to Earth.
Sukrit Ranjan +2 more
arxiv +3 more sources
Did minerals perform prebiotic combinatorial chemistry?
Chemistry & 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
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Electrostatic activation of prebiotic chemistry in substellar atmospheres [PDF]
International Journal of Astrobiology, 2013 Charged dust grains in the atmospheres of exoplanets may play a key role in the formation of prebiotic molecules, necessary to the origin of life. Dust grains submerged in an atmospheric plasma become negatively charged and attract a flux of ions that are accelerated from the plasma.
Stark, Craig Ronald +3 more
arxiv +8 more sources
Prebiotic Chemistry and the Origin of the RNA World [PDF]
Critical 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
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