Results 41 to 50 of about 31,847 (287)
Organic compounds in fluid inclusions of Archean quartz-Analogues of prebiotic chemistry on early Earth. [PDF]
PLoS ONE, 2017 The origin of life is still an unsolved mystery in science. Hypothetically, prebiotic chemistry and the formation of protocells may have evolved in the hydrothermal environment of tectonic fault zones in the upper continental crust, an environment where ...
Ulrich Schreiber +9 more
doaj +1 more source
Scum of the Earth: A Hypothesis for Prebiotic Multi-Compartmentalised Environments
Life, 2021 Compartmentalisation by bioenergetic membranes is a universal feature of life. The eventual compartmentalisation of prebiotic systems is therefore often argued to comprise a key step during the origin of life.
Craig Robert Walton, Oliver Shorttle
doaj +1 more source
Prebiotic Chemistry that Could Not Not Have Happened [PDF]
Life, 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.
Steven A. Benner +2 more
openaire +2 more sources
The Surface UV Environment on Planets Orbiting M-Dwarfs: Implications for Prebiotic Chemistry & Need for Experimental Follow-Up [PDF]
Ranjan, S., Wordsworth, R., & Sasselov, D. D., 2017, ApJ, 843, 11, 2017 Potentially-habitable planets orbiting M-dwarfs are of intense astrobiological interest because they are the only rocky worlds accessible to biosignature search over the next 10+ years due to a confluence of observational effects. Simultaneously, recent experimental and theoretical work suggests that UV light may have played a key role in the origin of
arxiv +1 more source
The emergence of interstellar molecular complexity explained by interacting networks [PDF]
PNAS 119 (30) e2119734119 (2022), 2022 Recent years have witnessed the detection of an increasing number of complex organic molecules in interstellar space, some of them being of prebiotic interest. Disentangling the origin of interstellar prebiotic chemistry and its connection to biochemistry and ultimately to biology is an enormously challenging scientific goal where the application of ...
arxiv +1 more source
UV-light-driven prebiotic synthesis of iron–sulfur clusters [PDF]
, 2017 Iron–sulfur clusters are ancient cofactors that play a fundamental role in metabolism and may have impacted the prebiotic chemistry that led to life.
Bonfio, Claudia +13 more
core +1 more source
Quenching to fix metastable states in models of prebiotic chemistry [PDF]
Phys. Rev. E 102, 062412 (2020), 2020 For prebiotic chemistry to succeed in producing a starting metastable, autocatalytic and reproducing system subject to evolutionary selection it must satisfy at least two apparently contradictory requirements: Because such systems are rare, a search among vast numbers of molecular combinations must take place naturally, requiring rapid rearrangement ...
arxiv +1 more source
, 1974 The origin of life is in a sense a genetic problem, for, as H. J. Muller pointed out many years ago, the essential attribute that identifies living matter is its capacity to replicate itself and its variants (1). Because this uniquely biological property
Horowitz, N. H., Hubbard, Jerry S.
core +1 more source
ChemPlusChem, Volume 87, Issue 12, December 2022., 2022 A deeper understanding regarding the enzyme‐carrier interactions and the enzyme conformation may bring clues about the inherent processes that occur during enzyme immobilization. In this study, the enzyme β‐galactosidase was immobilized on a meso‐macroporous silica carrier, and infrared spectroscopy allowed the search for such clues to explain the ...
Diogo Videira‐Quintela +3 more
wiley +1 more source
The Origin of RNA Precursors on Exoplanets [PDF]
Science Advances 01 Aug 2018: Vol. 4, no. 8, eaar3302, 2018 Given that the macromolecular building blocks of life were likely produced photochemically in the presence of ultraviolet (UV) light, we identify some general constraints on which stars produce sufficient UV for this photochemistry. We estimate how much light is needed for the UV photochemistry by experimentally measuring the rate constant for the UV ...
arxiv +1 more source