Results 1 to 10 of about 60,465 (252)

Discovery of a second citric acid cycle complex [PDF]

open access: yesHeliyon, 2023
Together, Nobel Prize honoured work, mathematics, physics and the laws of nature have drawn a concept of clockwise cycling carboxylic acids in Krebs’ Citric Acid Cycle. A Citric Acid Cycle complex is defined by specific substrate, product and regulation.
Dirk Roosterman, Graeme Stuart Cottrell
doaj   +6 more sources

Changes in TCA cycle and TCA cycle-related metabolites in plasma upon citric acid administration in rats

open access: yesHeliyon, 2021
Recent studies have reported that plasma levels of tricarboxylic acid (TCA) cycle metabolites and TCA cycle-related metabolite change in patients with chronic fatigue syndrome (CFS) and in healthy humans after exercise.
Yurie Hara   +3 more
doaj   +3 more sources

Citric acid cycle and the origin of MARS. [PDF]

open access: yesTrends Biochem Sci, 2013
The vertebrate multiaminoacyl tRNA synthetase complex (MARS) is an assemblage of nine aminoacyl tRNA synthetases (ARSs) and three non-synthetase scaffold proteins, aminoacyl tRNA synthetase complex-interacting multifunctional protein (AIMP)1, AIMP2, and AIMP3.
Eswarappa SM, Fox PL.
europepmc   +4 more sources

Linked cycles of oxidative decarboxylation of glyoxylate as protometabolic analogs of the citric acid cycle [PDF]

open access: yesNature Communications, 2018
The citric acid cycle (TCA) is a fundamental metabolic pathway to release stored energy in living organisms. Here, the authors report two linked cycles of reactions that each oxidize glyoxylate into CO2 and generate intermediates shared with the modern ...
Greg Springsteen   +4 more
doaj   +2 more sources

6-PPD quinone at environmentally relevant concentrations disrupts citric acid cycle in Caenorhabditis elegans: Role of reduction in acetyl CoA and pyruvate contents

open access: yesEnvironmental Chemistry and Ecotoxicology
The 6-PPD quinone (6-PPDQ) is derived from 6-PPD, an antioxidant added in tires. Citric acid cycle plays a pivotal role in biochemical metabolisms. In Caenorhabditis elegans, we examined effect of 6-PPDQ exposure on citric acid cycle and the role of ...
Xin Wan, Geyu Liang, Dayong Wang
doaj   +3 more sources

Abiotic origin of the citric acid cycle intermediates. [PDF]

open access: yesProc Natl Acad Sci U S A
The molecular framework for protometabolism—chemical reactions in a prebiotic environment preceding modern metabolism—has remained unknown in evolutionary biology. Mono-, di-, and tricarboxylic acids that comprise contemporary metabolism, such as the Krebs cycle, are of particular prebiotic relevance and are theorized to predate life on Earth ...
McAnally M   +6 more
europepmc   +4 more sources

Metabolomics and Gene Expression Analysis Reveal Down-regulation of the Citric Acid (TCA) Cycle in Non-diabetic CKD Patients

open access: yesEBioMedicine, 2017
Chronic kidney disease (CKD) is a public health problem with very high prevalence and mortality. Yet, there is a paucity of effective treatment options, partly due to insufficient knowledge of underlying pathophysiology.
Stein Hallan   +12 more
doaj   +3 more sources

Citric Acid in Endodontics: A Review [PDF]

open access: yesJournal of Dental Materials and Techniques, 2021
Naturally occurring in citrus fruits, citric acid is categorized as a weak organic acid, which may exist both as a monohydrate or in an anhydrous form.
Zahed Mohammadi   +4 more
doaj   +1 more source

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