Results 21 to 30 of about 1,119,388 (379)

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

A monomeric form of pyruvate kinase in human pyruvate kinase deficiency. [PDF]

Proceedings of the National Academy of Sciences, 1977
A mutant pyruvate kinase (ATP:pyruvate 2-O-phosphotransferase, EC 2.7.1.40) from human erythrocytes which is easily separated into monomers and dimers by gel chromatography is described. Tht mutant enzyme shows almost the same pH optimum and thermostability as normal enzyme, but has a decreased stability on shaking with air, a decreased Km for ...
Toshio Asakura, Patricia K. Ghory, Elias Schwartz, Kazuhiko Adachi   +3 more
openaire   +3 more sources

Role of pyruvate kinase M2-mediated metabolic reprogramming during podocyte differentiation

Cell Death and Disease, 2020
Podocytes, a type of highly specialized epithelial cells, require substantial levels of energy to maintain glomerular integrity and function, but little is known on the regulation of podocytes’ energetics.
Qi Yuan, Jiao Miao, Qianqian Yang, Li Fang, Yi Fang, Hao Ding, Yang Zhou, Lei Jiang, C. Dai, Ke Zen, Qi Sun, Junwei Yang   +11 more
semanticscholar   +1 more source

E2F1 Suppresses Oxidative Metabolism and Endothelial Differentiation of Bone Marrow Progenitor Cells [PDF]

, 2018
RATIONALE: The majority of current cardiovascular cell therapy trials use bone marrow progenitor cells (BM PCs) and achieve only modest efficacy; the limited potential of these cells to differentiate into endothelial-lineage cells is one of the major ...
Boriboun, Chan, Chandel, Navdeep S., Cheng, Min, Dong, Nian-Guo, Harris, Robert A., Huang, Kai, Liu, Qinghua, Losordo, Douglas W., Qin, Gangjian, Qiu, Hongyu, Shi, Jiawei, Sun, Tianjiao, Tao, Jun, Xu, Shiyue, Yang, Liu, Zhang, Eric, Zhao, Ting C., Zhou, Junlan   +17 more
core   +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

The Allosteric Regulation of Pyruvate Kinase [PDF]

Journal of Biological Chemistry, 2000
Pyruvate kinase (PK) is critical for the regulation of the glycolytic pathway. The regulatory properties of Escherichia coli were investigated by mutating six charged residues involved in interdomain salt bridges (Arg(271), Arg(292), Asp(297), and Lys(413)) and in the binding of the allosteric activator (Lys(382) and Arg(431)).
VALENTINI, GIOVANNA, CHIARELLI, LAURENT, SPERANZA, MARIA LUISA, GALIZZI, ALESSANDRO, MATTEVI, ANDREA, FORTIN R   +5 more
openaire   +5 more sources

Pyruvate Kinase Deficiency

Exploration of Host Genetic Factors associated with Malaria, 2020
Pyruvate kinase deficiency is an inherited disorder that affects red blood cells, which carry oxygen to the body's tissues. People with this disorder have a condition known as chronic hemolytic anemia, in which red blood cells are broken down (undergo ...
T. Qidwai
semanticscholar   +1 more source

Mutations in the PKM2 exon-10 region are associated with reduced allostery and increased nuclear translocation. [PDF]

, 2019
PKM2 is a key metabolic enzyme central to glucose metabolism and energy expenditure. Multiple stimuli regulate PKM2's activity through allosteric modulation and post-translational modifications.
Chen, Tsan-Jan, Cheng, Hsin-Hung, Hsu, Sheng-Chieh, Kung, Hsing-Jien, Liu, Jai-Shin, Liu, Ying-Yuan, Lu, Chien-Hung, Wang, Hung-Jung, Wang, Wen-Ching, Wu, Jing-Wen, Wu, Meng-Chen, Wu, Yu-Fang   +11 more
core   +3 more sources

Pyruvate Kinase Deficiency Causing Priapism

Case Reports in Hematology, 2023
Pyruvate kinase deficiency (PKD) is an autosomal recessive defect of the enzyme pyruvate kinase (PK) which is involved in catalyzing a reaction that produces ATP in the glycolytic pathway. It is the most common defect of the glycolytic pathway associated
Vinay Hanyalu Shankar, Bharadwaj Adithya-Sateesh, Nicole Gousy, Girma Ayele, Freyr Petursson, Rediet Atalay, Miriam Michael   +6 more
doaj   +1 more source

The allosteric regulation of pyruvate kinase [PDF]

FEBS Letters, 1996
Crystallographic and mutagenesis studies have unravelled the general features of the allosteric transition mechanism in pyruvate kinase. The enzyme displays a dramatic conformational change in going from the T‐ to the R‐state. All three domains forming each subunit of the tetrameric enzyme undergo simultaneous and concerted rotations, in such a way ...
MATTEVI, ANDREA, VALENTINI, GIOVANNA, BOLOGNESI M.   +2 more
openaire   +4 more sources