Results 11 to 20 of about 6,446,269 (330)

Chemical Evolution of a Bacterial Proteome. [PDF]

Angew Chem Int Ed Engl, 2015
AbstractWe have changed the amino acid set of the genetic code of Escherichia coli by evolving cultures capable of growing on the synthetic noncanonical amino acid L‐β‐(thieno[3,2‐b]pyrrolyl)alanine ([3,2]Tpa) as a sole surrogate for the canonical amino acid L‐tryptophan (Trp).
Hoesl MG, Oehm S, Durkin P, Darmon E, Peil L, Aerni HR, Rappsilber J, Rinehart J, Leach D, Söll D, Budisa N.   +10 more
europepmc   +4 more sources

The chemical evolution of oligonucleotide therapies of clinical utility. [PDF]

Nat Biotechnol, 2017
Khvorova A, Watts JK.
europepmc   +2 more sources

Chemical evolution of atmospheric organic carbon over multiple generations of oxidation. [PDF]

Nat Chem, 2018
Isaacman-VanWertz G, Massoli P, O'Brien R, Lim C, Franklin JP, Moss JA, Hunter JF, Nowak JB, Canagaratna MR, Misztal PK, Arata C, Roscioli JR, Herndon ST, Onasch TB, Lambe AT, Jayne JT, Su L, Knopf DA, Goldstein AH, Worsnop DR, Kroll JH.   +20 more
europepmc   +2 more sources

Modelling the chemical evolution of the Milky Way [PDF]

The Astronomy and Astrophysics Review, 2021
In this review, I will discuss the comparison between model results and observational data for the Milky Way, the predictive power of such models as well as their limits.
F. Matteucci
semanticscholar   +1 more source

Differential Oligomerization of Alpha versus Beta Amino Acids and Hydroxy Acids in Abiotic Proto-Peptide Synthesis Reactions

Life, 2022
The origin of biopolymers is a central question in origins of life research. In extant life, proteins are coded linear polymers made of a fixed set of twenty alpha-L-amino acids.
Moran Frenkel-Pinter, Kaitlin C. Jacobson, Jonathan Eskew-Martin, Jay G. Forsythe, Martha A. Grover, Loren Dean Williams, Nicholas V. Hud   +6 more
doaj   +1 more source

Role of the Oxide Support on the Structural and Chemical Evolution of Fe Catalysts during the Hydrogenation of CO2

ACS Catalysis, 2021
Iron-based catalysts are considered active for the hydrogenation of CO2 toward high-order hydrocarbons.
Mauricio Lopez Luna, J. Timoshenko, David Kordus, Clara Rettenmaier, See Wee Chee, A. Hoffman, S. Bare, S. Shaikhutdinov, B. Roldán Cuenya   +8 more
semanticscholar   +1 more source

The Thermo‐Chemical Evolution of Mars With a Strongly Stratified Mantle

Journal of Geophysical Research: Planets, 2021
The Martian mantle probably experienced an early global magma ocean stage. The crystallization and the fractionation and overturn of such a magma ocean likely led to the formation of a compositionally distinct layer at the bottom of the mantle.
H. Samuel, M. Ballmer, S. Padovan, N. Tosi, A. Rivoldini, A. Plesa   +5 more
semanticscholar   +1 more source

Thioesters provide a plausible prebiotic path to proto-peptides

Nature Communications, 2022
One of the early processes enabling the origins of life is thought to be the condensation of building blocks into oligomers and polymers. In this article, the authors report the synthesis of thiodepsipeptides and HS-peptides under mild temperatures and ...
Moran Frenkel-Pinter, Marcos Bouza, Facundo M. Fernández, Luke J. Leman, Loren Dean Williams, Nicholas V. Hud, Aikomari Guzman-Martinez   +6 more
doaj   +1 more source

De re metallica: the cosmic chemical evolution of galaxies [PDF]

The Astronomy and Astrophysics Review, 2018
The evolution of the content of heavy elements in galaxies, the relative chemical abundances, their spatial distribution, and how these scale with various galactic properties, provide unique information on the galactic evolutionary processes across the ...
R. Maiolino, F. Mannucci
semanticscholar   +1 more source

Mutually stabilizing interactions between proto-peptides and RNA

Nature Communications, 2020
Cooperative relationships are widespread among different classes of biopolymers and are predicted to have existed during emergence of life. This study shows that proto-peptides engage in mutually stabilizing interactions with RNA, providing support for ...
Moran Frenkel-Pinter, Jay W. Haynes, Ahmad M. Mohyeldin, Martin C, Alyssa B. Sargon, Anton S. Petrov, Ramanarayanan Krishnamurthy, Nicholas V. Hud, Loren Dean Williams, Luke J. Leman   +9 more
doaj   +1 more source