Results 41 to 50 of about 21,656 (280)

A ThDP-dependent enzymatic carboligation reaction involved in Neocarazostatin A tricyclic carbazole formation [PDF]

open access: yes, 2016
Acknowledgements This work was supported by grants from the National Natural Science Foundation of China (31570033 to Y. Y.) and the Leverhulme Trust-Royal Society Africa Award (AA090088 to K. K and H. D.).
Deng, Hai   +5 more
core   +1 more source

Metabolic fate of the carboxyl groups of malate and pyruvate and their influence on δ13C of leaf respired CO2 during light enhanced dark respiration

open access: yesFrontiers in Plant Science, 2016
The enhanced CO2 release of illuminated leaves transferred into darkness, termed light enhanced dark respiration (LEDR), is often associated with an increase in the carbon isotope ratio of the respired CO2 (δ13CLEDR). The latter has been hypothesized to
Marco M Lehmann   +8 more
doaj   +1 more source

Human 2-Oxoglutarate Dehydrogenase Complex E1 Component Forms a Thiamin-derived Radical by Aerobic Oxidation of the Enamine Intermediate. [PDF]

open access: yes, 2014
Herein are reported unique properties of the human 2-oxoglutarate dehydrogenase multienzyme complex (OGDHc), a rate-limiting enzyme in the Krebs (citric acid) cycle.
Ambrus, Attila   +5 more
core   +4 more sources

Dichloroacetate, the Pyruvate Dehydrogenase Complex and the Modulation of mESC Pluripotency. [PDF]

open access: yesPLoS ONE, 2015
The pyruvate dehydrogenase (PDH) complex is localized in the mitochondrial matrix catalyzing the irreversible decarboxylation of pyruvate to acetyl-CoA and NADH.
Ana Sofia Rodrigues   +6 more
doaj   +1 more source

Electron bifurcation mechanism and homoacetogenesis explain products yields in mixed culture anaerobic fermentations [PDF]

open access: yes, 2017
Anaerobic fermentation of organic wastes using microbial mixed cultures is a promising avenue to treat residues and obtain added-value products. However, the process has some important limitations that prevented so far any industrial application.
González-Cabaleiro, R.   +4 more
core   +4 more sources

On-Surface Decarboxylation Coupling Facilitated by Lock-to-Unlock Variation of Molecules upon the Reaction [PDF]

open access: yesAngewandte Chemie International Edition, Wiley-VCH Verlag, 2021, 2021
On-surface synthesis (OSS) involving relatively high energy barriers remains challenging due to a typical dilemma: firm molecular anchor is required to prevent molecular desorption upon the reaction, whereas sufficient lateral mobility is crucial for subsequent coupling and assembly.
arxiv  

Current Methods for Hyperpolarized [1-13C]pyruvate MRI Human Studies [PDF]

open access: yes, 2023
MRI with hyperpolarized (HP) 13C agents, also known as HP 13C MRI, can measure processes such as localized metabolism that is altered in numerous cancers, liver, heart, kidney diseases, and more. It has been translated into human studies during the past 10 years, with recent rapid growth in studies largely based on increasing availability of ...
arxiv   +1 more source

Thirdhand cigarette smoke leads to age‐dependent and persistent alterations in the cecal microbiome of mice

open access: yesMicrobiologyOpen, 2021
The gut microbiome composition is influenced by many factors including environmental exposures. Here, we investigated the effect of thirdhand cigarette smoke (THS) and exposure age on gut microbiome diversity.
Li He   +9 more
doaj   +1 more source

Characteristics of C-4 photosynthesis in stems and petioles of C-3 flowering plants [PDF]

open access: yes, 2002
Most plants are known as C-3 plants because the first product of photosynthetic CO2 fixation is a three-carbon compound. C-4 plants, which use an alternative pathway in which the first product is a four-carbon compound, have evolved independently many ...
A Ben Zioni   +29 more
core   +1 more source

Radical-induced Hetero-Nuclear Mixing and Low-field $^{13}$C Relaxation in Solid Pyruvic Acid [PDF]

open access: yes, 2022
Radicals serve as source in dynamic nuclear polarization, but may also act as polarization sink. If the coupling between the electron spins and different nuclear reservoirs is stronger than any of the reservoirs' couplings to the lattice, radicals can mediate hetero-nuclear mixing.
arxiv   +1 more source

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