Results 241 to 250 of about 924,617 (340)

Organic Reactivity Matters for the Emergence of Life: Kinetic Barriers and Molecular Diversity Are Suggested as Crucial Factors by Emerging Autonomous System Models

ChemSystemsChem, EarlyView.
Self‐organisation may result from organic systems fed with free energy provided that reactivity becomes a determining factor. The propensity of carbon to form covalent bonds can give rise to kinetically stable thermodynamically activated compounds possibly undergoing non‐linear kinetic processes.
Robert Pascal
wiley   +1 more source

Elementary Reactions and Their Role in Gas-Phase Prebiotic Chemistry [PDF]

, 2009
Nadia Balucani
openalex   +1 more source

Prebiotic synthesis of simple sugars by photoredox systems chemistry [PDF]

, 2012
Dougal J. Ritson, John D. Sutherland
openalex   +1 more source

Simple Hydroxybenzene Molecules as Thermally Stable Catalysts

ChemSystemsChem, EarlyView.
Hydroxybenzene molecules, including tannic acid, catalyze the hydrolysis of p‐nitrophenylacetate (pNPA) to p‐nitrophenol and thioacetylcholine (tAChI) to thiocholine. The catalytic performance is governed by the number and arrangement of hydroxyl groups, as well as polymer formation during incubation.
Omer Agazani, Daniel Boas, Vinay Shankar Tiwari, Or Cohen, Deborah E. Shalev, Meital Reches   +5 more
wiley   +1 more source

15 Combinatorial chemistry in the prebiotic environment [PDF]

, 2013
David W. Deamer
openalex   +1 more source

In vitro digestibility of Urochloa decumbens inoculated with fungi isolated from the gastrointestinal tract of sheep

Annals of Applied Biology, EarlyView.
The forage digestibility decreases in the dry season. Fungus isolates from the gastrointestinal tract of healthy sheep were evaluated. Aspergillus terreus isolate was identified by analysis of rDNA and encoding β‐tubulin gene and Trichoderma longibrachiatum was identified by analysis of rDNA and elongation factor 1‐α gene. The T.
Claudio Eduardo Silva Freitas, Mara Lúcia Albuquerque Pereira, Higor Alexandre Rodrigues Maia, Angélica Alves De Moura Freitas, Herymá Giovane De Oliveira Silva, Fernando Santos Magaço, Vera Lúcia Dos Santos, Aline Daniela Lopes Júlio, Felipe Gomes Da Silva, Luciana Castro Geraseev, Eduardo Robson Duarte   +10 more
wiley   +1 more source

Cutting‐Edge Advancements in the Antibiotics‐Gut Microbiota‐Urinary Tumour Axis

Cell Proliferation, EarlyView.
Gut microbiota regulates urological tumors. Antibiotics induce dysbiosis, altering tumor progression/therapy: reducing carcinogen metabolism but impairing immunity. Specific bacteria enhance immune responses and combat endocrine resistance. Future research should unravel microbiota‐cancer links and develop microbiome‐targeted therapies to optimize ...
Jie Wang, Dengxiong Li, Ruicheng Wu, Dechao Feng   +3 more
wiley   +1 more source

Taming Prebiotic Chemistry: The Role of Heterogeneous and Interfacial Catalysis in the Emergence of a Prebiotic Catalytic/Information Polymer System [PDF]

, 2016
Pierre‐Alain Monnard
openalex   +1 more source

Conversion of pyridoxal to pyridoxamine with NH3 and H2 on nickel generates a protometabolic nitrogen shuttle under serpentinizing conditions

The FEBS Journal, EarlyView.
Recent studies show that Ni0 catalyzes amino acid synthesis from 2‐oxoacids via reductive amination. We show that the cofactor pyridoxal is reductively aminated to pyridoxamine, the NH2‐transferring intermediate of transaminations, with NH3 (~ 5 mm) and H2 (5 bar) on Ni0 catalysts within hours in water under serpentinizing hydrothermal vent conditions (
Manon Laura Schlikker, Max Brabender, Loraine Schwander, Carolina Garcia Garcia, Maximillian Burmeister, Sabine Metzger, Joseph Moran, William F. Martin   +7 more
wiley   +1 more source

Protometabolic functions of pyridoxal: A link between early amino acid synthesis and enzyme evolution

The FEBS Journal, EarlyView.
Schlikker et al. characterized the conversion of pyridoxal to pyridoxamine under conditions mimicking the ones likely existing at the origin of metabolism. These conditions triggered nitrogen incorporation into amino acids in solution before the origins of enzymes.
Mariarita Bertoldi, Gianluca Molla
wiley   +1 more source