Results 1 to 10 of about 54,963 (194)

Increased ethylene production by overexpressing phosphoenolpyruvate carboxylase in the cyanobacterium Synechocystis PCC 6803

open access: yesBiotechnology for Biofuels, 2020
Background Cyanobacteria can be metabolically engineered to convert CO2 to fuels and chemicals such as ethylene. A major challenge in such efforts is to optimize carbon fixation and partition towards target molecules.
Claudia Durall   +3 more
doaj   +2 more sources

Inhibition of triosephosphate isomerase by phosphoenolpyruvate in the feedback-regulation of glycolysis [PDF]

open access: yesOpen Biology, 2014
The inhibition of triosephosphate isomerase (TPI) in glycolysis by the pyruvate kinase (PK) substrate phosphoenolpyruvate (PEP) results in a newly discovered feedback loop that counters oxidative stress in cancer and actively respiring cells.
Nana-Maria Grüning   +4 more
doaj   +2 more sources

Enzyme I facilitates reverse flux from pyruvate to phosphoenolpyruvate in Escherichia coli

open access: yesNature Communications, 2017
Enzyme I, a component of the phosphoenolpyruvate-carbohydrate phosphotransferase system (PTS), converts phosphoenolpyruvate to pyruvate. Here, the authors show that Enzyme I facilitates also the reverse reaction during both gluconeogenic and glycolytic ...
Christopher P. Long   +4 more
doaj   +2 more sources

Phosphoenolpyruvate carboxykinase in cell metabolism: Roles and mechanisms beyond gluconeogenesis

open access: yesMolecular Metabolism, 2021
Background: Phosphoenolpyruvate carboxykinase (PCK) has been almost exclusively recognized as a critical enzyme in gluconeogenesis, especially in the liver and kidney.
Shuo Yu   +3 more
doaj   +2 more sources

Nur77 suppresses hepatocellular carcinoma via switching glucose metabolism toward gluconeogenesis through attenuating phosphoenolpyruvate carboxykinase sumoylation

open access: yesNature Communications, 2017
Gluconeogenesis is downregulated in hepatocellular carcinoma. Here, the authors show that nuclear receptor Nur77 acts as a tumour suppressor sustaining gluconeogenesis by enhancing phosphoenolpyruvate carboxykinase (PEPCK1) stability via regulating its ...
Xue-li Bian   +14 more
doaj   +2 more sources

Allosteric regulation of pyruvate kinase enables efficient and robust gluconeogenesis by preventing metabolic conflicts and carbon overflow [PDF]

open access: yesmSystems
Gluconeogenesis, the reciprocal pathway of glycolysis, is an energy-consuming process that generates glycolytic intermediates from non-carbohydrate sources. In this study, we demonstrate that robust and efficient gluconeogenesis in bacteria relies on the
Fukang She   +13 more
doaj   +2 more sources

The requirement of phosphoenolpyruvate carboxykinase 1 for angiogenesis in vitro and in vivo

open access: yesScience Advances, 2022
We here examined the potential biological function of phosphoenolpyruvate carboxykinase 1 (PCK1) in angiogenesis. shRNA- or CRISPR-Cas9–induced PCK1 depletion potently inhibited endothelial cell proliferation, migration, sprouting, and tube formation ...
Jin Yao   +10 more
semanticscholar   +1 more source

sRNA scr5239 Involved in Feedback Loop Regulation of Streptomyces coelicolor Central Metabolism

open access: yesFrontiers in Microbiology, 2020
In contrast to transcriptional regulation, post-transcriptional regulation and the role of small non-coding RNAs (sRNAs) in streptomycetes are not well studied. Here, we focus on the highly conserved sRNA scr5239 in Streptomyces coelicolor.
Franziska Engel   +4 more
doaj   +1 more source

Millisecond mix-and-quench crystallography (MMQX) enables time-resolved studies of PEPCK with remote data collection

open access: yesIUCrJ, 2021
Time-resolved crystallography of biomolecules in action has advanced rapidly as methods for serial crystallography have improved, but the large number of crystals and the complex experimental infrastructure that are required remain serious obstacles to ...
Jonathan A. Clinger   +4 more
doaj   +1 more source

Comprehensive Analysis of C. glutamicum Anaplerotic Deletion Mutants Under Defined d-Glucose Conditions

open access: yesFrontiers in Bioengineering and Biotechnology, 2021
Wild-type C. glutamicum ATCC 13032 is known to possess two enzymes with anaplerotic (C4-directed) carboxylation activity, namely phosphoenolpyruvate carboxylase (PEPCx) and pyruvate carboxylase (PCx). On the other hand, C3-directed decarboxylation can be
Jannick Kappelmann   +8 more
doaj   +1 more source

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