Potassium at the Origins of Life: Did Biology Emerge from Biotite in Micaceous Clay? [PDF]
Life, 2022 Intracellular potassium concentrations, [K+], are high in all types of living cells, but the origins of this K+ are unknown. The simplest hypothesis is that life emerged in an environment that was high in K+.
Helen Greenwood Hansma
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Positive Microbiology in the Movies. [PDF]
Microb BiotechnolHow ‘Positive Microbiology’ is portrayed in commercial movies and its potential as a tool for education and engaging general audiences to counteract germaphobia. Image done with freepik. ABSTRACT Microbes are essential for sustaining life in our planet.
Sánchez-Angulo M.
europepmc +2 more sources
Amniotic Fluid and Ocean Water: Evolutionary Echoes, Chemical Parallels, and the Infiltration of Micro- and Nanoplastics [PDF]
ToxicsBackground: Abiogenesis is hypothesized to have occurred in the aquatic environments of the early Earth approximately 3.8–4.0 billion years ago, in oceans containing high concentrations of ions (Na+ ≈ 470 mmol/L, Cl− ≈ 545 mmol/L, Mg2+ ≈ 51–53 mmol/L ...
Antonio Ragusa
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The hierarchical organization of autocatalytic reaction networks and its relevance to the origin of life. [PDF]
PLoS Computational Biology, 2022 Prior work on abiogenesis, the emergence of life from non-life, suggests that it requires chemical reaction networks that contain self-amplifying motifs, namely, autocatalytic cores.
Zhen Peng, Jeff Linderoth, David A Baum
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The Coevolution of Biomolecules and Prebiotic Information Systems in the Origin of Life: A Visualization Model for Assembling the First Gene [PDF]
Life, 2022 Prebiotic information systems exist in three forms: analog, hybrid, and digital. The Analog Information System (AIS), manifested early in abiogenesis, was expressed in the chiral selection, nucleotide formation, self-assembly, polymerization ...
Sankar Chatterjee, Surya Yadav
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An Objective Bayesian Analysis of Life's Early Start and Our Late Arrival [PDF]
Proc Natl Acad Sci U S A, 2020 Life emerged on the Earth within the first quintile of its habitable window, but a technological civilization did not blossom until its last. Efforts to infer the rate of abiogenesis, based on its early emergence, are frustrated by the selection effect ...
Kipping, David
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The HOMO-LUMO Gap as Discriminator of Biotic from Abiotic Chemistries [PDF]
LifeLow-molecular-mass organic chemicals are widely discussed as potential indicators of life in extraterrestrial habitats. However, demarcation lines between biotic chemicals and abiotic chemicals have been difficult to define.
Roman Abrosimov, Bernd Moosmann
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Reproducible Ala-Gly oligomerization catalyzed by the natural Borate colemanite in prebiotic conditions [PDF]
Scientific ReportsThe abiogenesis of complex peptides is a yet unsolved problem concerning the origin of life, as it is unclear how specific amino acid sequences could be formed in the absence of a regulation mechanism.
Isabella Rimoldi +8 more
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Exploring the space of self-reproducing ribozymes using generative models [PDF]
Nature CommunicationsEstimating the plausibility of RNA self-reproduction is central to origin-of-life scenarios. However, this property has been shown in only a handful of catalytic RNAs.
Camille N. Lambert +8 more
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The Dissipative Photochemical Origin of Life: UVC Abiogenesis of Adenine
Entropy, 2021 The non-equilibrium thermodynamics and the photochemical reaction mechanisms are described which may have been involved in the dissipative structuring, proliferation and complexation of the fundamental molecules of life from simpler and more common ...
Karo Michaelian
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