Results 131 to 140 of about 3,067,292 (342)

Exobiology and the origin of life [PDF]

Research supported wholly or in part by NASA is summarized, Topics covered include the molecular analysis of ultraviolet-photoproduced organic solids synthesized under simulated Jovian conditions; the molecular analysis of organic solids produced by ...
Sagan, C.
core   +4 more sources

Characteristics of synbiotics and lactobionic acid

Journal of Functional Foods
This analysis delves into the combined advantages of synbiotics - a mix of probiotics and prebiotics, in supporting gut health and overall wellness. Synbiotics have displayed potential in enhancing function reducing inflammation and promoting digestion ...
Kamila Goderska, Peace Oluwamuyiwa Obey
doaj   +1 more source

Natural pH Gradients in Hydrothermal Alkali Vents Were Unlikely to Have Played a Role in the Origin of Life

Journal of Molecular Evolution, 2016
The hypothesis that a natural pH gradient across inorganic membranes lying between the ocean and fluid issuing from hydrothermal alkali vents provided energy to drive chemical reactions during the origin of life has an attractive parallel with ...
J. Baz Jackson
semanticscholar   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source

Better than Membranes at the Origin of Life?

Life, 2017
Organelles without membranes are found in all types of cells and typically contain RNA and protein. RNA and protein are the constituents of ribosomes, one of the most ancient cellular structures.
H. Hansma
semanticscholar   +1 more source

The Caenorhabditis elegans DPF‐3 and human DPP4 have tripeptidyl peptidase activity

FEBS Letters, EarlyView.
The dipeptidyl peptidase IV (DPPIV) family comprises serine proteases classically defined by their ability to remove dipeptides from the N‐termini of substrates, a feature that gave the family its name. Here, we report the discovery of a previously unrecognized tripeptidyl peptidase activity in DPPIV family members from two different species.
Aditya Trivedi, Rajani Kanth Gudipati
wiley   +1 more source

Ribozyme Activity of RNA Nonenzymatically Polymerized from 3′,5′-Cyclic GMP

Entropy, 2013
3′,5′-Cyclic GMP spontaneously nonenzymatically polymerizes in a base-catalyzed reaction affording G oligonucleotides. When reacted with fully or partially sequence-complementary RNA (oligo C), the abiotically generated oligo G RNA displays a typical ...
Samanta Pino, Giovanna Costanzo, Alessandra Giorgi, Jiří Šponer, Judit E. Šponer, Ernesto Di Mauro   +5 more
doaj   +1 more source

Geological and Geochemical Constraints on the Origin and Evolution of Life

Astrobiology, 2018
The traditional tree of life from molecular biology with last universal common ancestor (LUCA) branching into bacteria and archaea (though fuzzy) is likely formally valid enough to be a basis for discussion of geological processes on the early Earth ...
N. Sleep
semanticscholar   +1 more source

Tunguska similar impacts and origin of life [PDF]

, 2013
Andrei E. Zlobin
openalex   +1 more source

The Long-Term Life-Cycle of Nevado de Toluca Volcano (Mexico): Insights Into the Origin of Petrologic Modes [PDF]

, 2020
Gregor Weber, Luca Caricchi, José Luis Arce   +2 more
openalex   +1 more source