One step beyond a ribosome: The ancient anaerobic core
- BiologyBiochimica et biophysica acta
Proton gradients at the origin of life
- BiologyBioEssays : news and reviews in molecular, cellular and developmental biology
A counterpoint is intended to set the record straight after a paper by Baz Jackson concluded that natural pH gradients were unlikely to have played any role in the origin of life.
Very early evolution from the perspective of microbial ecology.
- BiologyEnvironmental microbiology
Here, the current understanding of organismal and genome evolution from the perspective of microbial ecology is synthesized and broad evolutionary modes pertaining to horizontal gene transfer, pangenome structure, and microbial mat communities are applied.
The last universal common ancestor between ancient Earth chemistry and the onset of genetics
- BiologyPLoS genetics
This paper argues that a different view of LUCA is needed, one that fits well with the harsh geochemical setting of early Earth and resembles the biology of prokaryotes that today inhabit the Earth's crust.
Serpentinization: Connecting Geochemistry, Ancient Metabolism and Industrial Hydrogenation
It is suggested that at the onset of life, essential reactions leading to reduced carbon and reduced nitrogen occurred with catalysts that were synthesized during the serpentinization process, connecting the chemistry of life and Earth to industrial chemistry in unexpected ways.
Catalysts, autocatalysis and the origin of metabolism
- BiologyInterface Focus
Identifying geochemical catalysts that activate gasses en route to nitrogenous organic compounds and small autocatalytic networks will be an important step towards understanding prebiotic chemistry that operates only on the basis of chemical energy, without input from solar radiation.
Is life supernatural?
- PhysicsSPIE Optical Engineering + Applications
The big question of the origin of life is examined. The paradox created by Pasteur’s resounding edict: Life only comes from life, pitted against the need for spontaneous generation is explored. This…
Effects of Pressure and pH on the Hydrolysis of Cytosine: Implications for Nucleotide Stability around Deep‐Sea Black Smokers
- ChemistryChembiochem : a European journal of chemical biology
S scant support is provided for the notion that RNA‐based life forms originated in high‐temperature, high‐pressure, acidic environments for cytosine and cytidine.
To What Inanimate Matter Are We Most Closely Related and Does the Origin of Life Harbor Meaning?
The question concerning the meaning of life is important, but it immediately confronts the present authors with insurmountable obstacles from a philosophical standpoint, as it would require us to…
Origin of Life: The Point of No Return
A definition and a mechanism for Darwinian evolution are provided together with a critical analysis of some of the hypotheses for the origin of life andinctive features of Darwinian Evolution and life rooted in the interaction between information and its corresponding structure/function are reviewed.
SHOWING 1-10 OF 28 REFERENCES
A Bioenergetic Basis for Membrane Divergence in Archaea and Bacteria
- BiologyPLoS biology
This work shows that the deepest split in the tree of life is between archaea and bacteria can be explained by the late evolution of impermeable membranes, for energetic reasons.
Methanogens: a window into ancient sulfur metabolism.
- Environmental ScienceTrends in microbiology
The two-domain tree of life is linked to a new root for the Archaea
- BiologyProceedings of the National Academy of Sciences
The results robustly indicate a sister relationship of eukaryotes with the TACK superphylum that is strongly associated with a distinct root of the Archaea that lies within the Euryarchaeota, challenging the traditional topology of the archaeal tree.
Biochemical fossils of the ancient transition from geoenergetics to bioenergetics in prokaryotic one carbon compound metabolism.
- BiologyBiochimica et biophysica acta
Microbial life under extreme energy limitation
- BiologyNature Reviews Microbiology
A revised understanding of microbial energy requirements will require identifying the factors that comprise true basal maintenance and the adaptations that might serve to minimize these factors.
Evidence from fluid inclusions for microbial methanogenesis in the early Archaean era
- Environmental Science, GeologyNature
This work reports crushing extraction and carbon isotope analysis of methane-bearing fluid inclusions in ∼3.5-Gyr-old hydrothermal precipitates from Pilbara craton, Australia, and indicates that the extracted fluids contain microbial methane with carbon isotopic compositions of less than -56‰ included within original precipitates.
Submarine hydrothermal vents and associated gradient environments as sites for the origin and evolution of life
- GeologyOrigins of life and evolution of the biosphere
Submarine hydrothermal vents are the only comtemporary geological environment which may be called truly primeval; they continue to be a major source of gases and dissolved elements to the modern…
Serpentinites, Hydrogen, and Life
The process of serpentinization creates strongly reducing conditions and produces fluids that are highly enriched in molecular hydrogen and methane. Some microorganisms are able to exploit these…
Energetics of Biomolecule Synthesis on Early Earth
Among the most plausible environments for the origin of life are marine hydrothermal systems, where geochemical energy sources and refugia from sterilizing meteorite impacts would have been…
Carbonyl Sulfide-Mediated Prebiotic Formation of Peptides
It is shown that carbonyl sulfide (COS), a simple volcanic gas, brings about the formation of peptides from amino acids under mild conditions in aqueous solution.