Results 1 to 10 of about 128,438 (311)

Pyruvate kinase directly generates GTP in glycolysis, supporting growth and contributing to guanosine toxicity [PDF]

mBio
Guanosine triphosphate (GTP) is essential for macromolecular biosynthesis, and its intracellular levels are tightly regulated in bacteria. Loss of the alarmone (p)ppGpp disrupts GTP regulation in Bacillus subtilis, causing cell death in the presence of ...
Fukang She, Kuanqing Liu, Brent W. Anderson, Tippapha Pisithkul, Yanxiu Li, Danny K. Fung, Tyler McCue, William Mulhern, Daniel Amador-Noguez, Jue D. Wang   +9 more
doaj   +2 more sources

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

mSystems
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, Brent W. Anderson, Daven B. Khana, Shenwei Zhang, Wieland Steinchen, Danny K. Fung, Nathalie G. Lesser, Lauren N. Lucas, David M. Stevenson, Theresa J. Astmann, Gert Bange, Jan-Peter van Pijkeren, Daniel Amador-Noguez, Jue D. Wang   +13 more
doaj   +2 more sources

A Sri Lankan girl with a new genetic variant in the PKLR gene causing pyruvate kinase deficiency: a case report

Journal of Medical Case Reports, 2021
Background Erythrocyte pyruvate kinase is expressed under the control of the PKLR gene located on chromosome 1q21. Pyruvate kinase catalyzes the final steps of the glycolytic pathway and creates 50% of the red cell total adenosine triphosphate.
Ahalyaa Sivashangar, Lallindra Gooneratne, Barnaby Clark, David Rees, Saroj Jayasinghe, Claire Laas   +5 more
doaj   +1 more source

Ethyl pyruvate protects SHSY5Y cells against 6-hydroxydopamine-induced neurotoxicity by upregulating autophagy

PLoS ONE, 2023
Parkinson disease is a chronic progressive neurodegenerative disorder with a prevalence that increases with age. The glycolytic end-product pyruvate, has antioxidant and neuroprotective feature. Here, we investigated the effects of ethyl pyruvate (EP), a
Yuening Luo, Kazuichi Sakamoto
doaj   +2 more sources

Suppressed “Warburg Effect” in Nasopharyngeal Carcinoma Via the Inhibition of Pyruvate Kinase Type M2-Mediated Energy Generation Pathway

Technology in Cancer Research & Treatment, 2020
Warburg effect describes the abnormal energy metabolism in cancer cells and pyruvate kinase type M2 is involved in the regulation of this effect.
Penglong Zhao MBBS, Mengyan Zhou MMed, Ruixiang Chen MBBS, Renjie Su MMed   +3 more
doaj   +1 more source

Protein kinase function of pyruvate kinase M2 and cancer

Cancer Cell International, 2020
Pyruvate kinase is a terminal enzyme in the glycolytic pathway, where it catalyzes the conversion of phosphoenolpyruvate to pyruvate and production of ATP via substrate level phosphorylation.
Xun Chen, Shangwu Chen, Dongsheng Yu
doaj   +1 more source

Crystal structure of Cryptosporidium parvum pyruvate kinase. [PDF]

PLoS ONE, 2012
Pyruvate kinase plays a critical role in cellular metabolism of glucose by serving as a major regulator of glycolysis. This tetrameric enzyme is allosterically regulated by different effector molecules, mainly phosphosugars.
William J Cook, Olga Senkovich, Khadijah Aleem, Debasish Chattopadhyay   +3 more
doaj   +1 more source

Transcriptional and Biochemical Characterization of Cytosolic Pyruvate Kinases in Arabidopsis thaliana

Plants, 2020
Glycolysis is a central catabolic pathway in every living organism with an essential role in carbohydrate breakdown and ATP synthesis, thereby providing pyruvate to the tricarboxylic acid cycle (TCA cycle).
Sabine Wulfert, Sören Schilasky, Stephan Krueger   +2 more
doaj   +1 more source

Rapid inhibition of pyruvate dehydrogenase: an initiating event in high dietary fat-induced loss of metabolic flexibility in the heart. [PDF]

PLoS ONE, 2013
Cardiac function depends on the ability to switch between fatty acid and glucose oxidation for energy production in response to changes in substrate availability and energetic stress.
Clair Crewe, Michael Kinter, Luke I Szweda   +2 more
doaj   +1 more source

From Glucose to Lactate and Transiting Intermediates Through Mitochondria, Bypassing Pyruvate Kinase: Considerations for Cells Exhibiting Dimeric PKM2 or Otherwise Inhibited Kinase Activity

Frontiers in Physiology, 2020
A metabolic hallmark of many cancers is the increase in glucose consumption coupled to excessive lactate production. Mindful that L-lactate originates only from pyruvate, the question arises as to how can this be sustained in those tissues where pyruvate
Christos Chinopoulos
doaj   +1 more source