Results 31 to 40 of about 19,936 (198)

DNA Renaturation at the Water-Phenol Interface [PDF]

open access: yes, 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.
121   +161 more
core   +4 more sources

Prebiotic Competition between Information Variants, With Low Error Catastrophe Risks

open access: yesEntropy, 2015
During competition for resources in primitive networks increased fitness of an information variant does not necessarily equate with successful elimination of its competitors.
Radu Popa, Vily Marius Cimpoiasu
doaj   +1 more source

Lipid-Assisted Polymerization of Nucleotides

open access: yesLife, 2019
In addition to being one of the proponents of the “Lipid World hypothesis”, David Deamer, together with other colleagues, pioneered studies involving formation of RNA-like oligomers from their ‘non-activated’, prebiotically ...
Felix Olasagasti, Sudha Rajamani
doaj   +1 more source

Twenty years of "Lipid World": a fertile partnership with David Deamer [PDF]

open access: yes, 2019
"The Lipid World" was published in 2001, stemming from a highly effective collaboration with David Deamer during a sabbatical year 20 years ago at the Weizmann Institute of Science in Israel.
Kahana, Amit   +2 more
core   +1 more source

Nitrogen Oxide Concentrations in Natural Waters on Early Earth

open access: yes, 2019
A key challenge in origins-of-life studies is estimating the abundances of species relevant to the chemical pathways proposed to have contributed to the emergence of life on early Earth.
Babbin, Andrew R.   +4 more
core   +1 more source

On the Theory of Evolution Versus the Concept of Evolution: Three Observations [PDF]

open access: yes, 2011
Here we address three misconceptions stated by Rice et al. in their observations of our article Paz-y-Miño and Espinosa (Evo Edu Outreach 2:655–675, 2009), published in this journal.
A Lazcano   +24 more
core   +2 more sources

Organic Molecules in the Icy Bodies of Planetary Systems – Accepted Notions and New Ideas

open access: yesOpen Astronomy, 2018
Cometary bodies are acknowledged to contain some of the most pristine matter in the Solar System, including ices and minerals. Certain number of previously unidentified spectral emission features detected in comets can be explained as emission by ...
Simonia Irakli, Cruikshank Dale P.
doaj   +1 more source

The origin of life: chemical evolution of a metabolic system in a mineral honeycomb? [PDF]

open access: yes, 2009
For the RNA-world hypothesis to be ecologically feasible, selection mechanisms acting on replicator communities need to be invoked and the corresponding scenarios of molecular evolution specified.
A Ricardo   +41 more
core   +2 more sources

Chemical Diversity of Metal Sulfide Minerals and Its Implications for the Origin of Life

open access: yesLife, 2018
Prebiotic organic synthesis catalyzed by Earth-abundant metal sulfides is a key process for understanding the evolution of biochemistry from inorganic molecules, yet the catalytic functions of sulfides have remained poorly explored in the context of the ...
Yamei Li, Norio Kitadai, Ryuhei Nakamura
doaj   +1 more source

Insights into Early Steps of Decanoic Acid Self-Assemblies under Prebiotic Temperatures Using Molecular Dynamics Simulations

open access: yesMembranes, 2023
The origin of life possibly required processes in confined systems that facilitated simple chemical reactions and other more complex reactions impossible to achieve under the condition of infinite dilution.
Romina V. Sepulveda   +5 more
doaj   +1 more source

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