When anaerobes encounter oxygen: mechanisms of oxygen toxicity, tolerance and defence

Z Lu, JA Imlay - Nature reviews microbiology, 2021 - nature.com
The defining trait of obligate anaerobes is that oxygen blocks their growth, yet the underlying
mechanisms are unclear. A popular hypothesis was that these microorganisms failed to …

Recent advances in N-heterocyclic carbene-based radical catalysis

T Ishii, K Nagao, H Ohmiya - Chemical Science, 2020 - pubs.rsc.org
In nature, a number of enzymes use thiamine diphosphate as a coenzyme to catalyze the
pyruvate decarboxylation. The resultant enamine, a so-called “Breslow intermediate,” is …

Radical NHC catalysis

K Liu, M Schwenzer, A Studer - ACS Catalysis, 2022 - ACS Publications
Radical/radical cross-coupling reactions represent an efficient and straightforward approach
for the construction of chemical bonds and accordingly have drawn increasing attention over …

Organocatalytic reactions enabled by N-heterocyclic carbenes

DM Flanigan, F Romanov-Michailidis, NA White… - Chemical …, 2015 - ACS Publications
Organocatalytic Reactions Enabled by N-Heterocyclic Carbenes | Chemical Reviews ACS
ACS Publications C&EN CAS Find my institution Log In Chemical Reviews ACS Publications …

N-Heterocyclic carbene-based catalysis enabling cross-coupling reactions

H Ohmiya - ACS Catalysis, 2020 - ACS Publications
N-Heterocyclic carbene (NHC) organocatalysis to promote so-called umpolung reactions
has emerged as a powerful tool for modern organic synthesis. NHC-bound nucleophiles …

N-Heterocyclic Carbene-Catalyzed Decarboxylative Alkylation of Aldehydes

T Ishii, Y Kakeno, K Nagao… - Journal of the American …, 2019 - ACS Publications
We found that N-heterocyclic carbene catalysis promoted the unprecedented
decarboxylative coupling of aryl aldehydes and tertiary or secondary alkyl carboxylic acid …

Autotrophy at the thermodynamic limit of life: a model for energy conservation in acetogenic bacteria

K Schuchmann, V Müller - Nature Reviews Microbiology, 2014 - nature.com
Life on earth evolved in the absence of oxygen with inorganic gases as potential sources of
carbon and energy. Among the alternative mechanisms for carbon dioxide (CO2) fixation in …

[HTML][HTML] Functions of elements in soil microorganisms

M Hemkemeyer, SA Schwalb, S Heinze… - Microbiological …, 2021 - Elsevier
The soil microbial community fulfils various functions, such as nutrient cycling and carbon
(C) sequestration, therefore contributing to maintenance of soil fertility and mitigation of …

Carbene and photocatalyst-catalyzed decarboxylative radical coupling of carboxylic acids and acyl imidazoles to form ketones

SC Ren, X Yang, B Mondal, C Mou, W Tian… - Nature …, 2022 - nature.com
The carbene and photocatalyst co-catalyzed radical coupling of acyl electrophile and a
radical precursor is emerging as attractive method for ketone synthesis. However, previous …

[HTML][HTML] Microbial respiration and formate oxidation as metabolic signatures of inflammation-associated dysbiosis

ER Hughes, MG Winter, BA Duerkop, L Spiga… - Cell host & …, 2017 - cell.com
Intestinal inflammation is frequently associated with an alteration of the gut microbiota,
termed dysbiosis, which is characterized by a reduced abundance of obligate anaerobic …