Results 261 to 270 of about 24,261 (292)
Bioelectrocatalysis of Pyruvate with PQQ-dependent Pyruvate Dehydrogenase [PDF]
ECS Transactions, 2010 Although pyruvate has not been considered as a fuel for an enzymatic biofuel cell, there are dehydrogenase enzyme capable of oxidizing pyruvate. This paper details the discovery of a pyrroloquinoline quinone-dependent pyruvate dehydrogenase (PQQ-PDH) in Gluconobacter species.
Becky L. Treu +2 more
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Amperometric sensor for pyruvate with immobilized pyruvate oxidase
Analytica Chimica Acta, 1987Abstract Several procedures for immobilization of pyruvate oxidase by chemical bonding are reported. Attachment to nylon net was unsatisfactory in terms of yield and stability. Polyazetidine, a new commercially available prepolymer and a new nylon membrane with surface carboxyl groups provided good long-term stability, up to 30 days in the case of ...
M. Mascini, MAZZEI, Franco
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The International Journal of Biochemistry & Cell Biology, 1998
Pyruvate carboxylase [EC 6.4.1.1] is a member of the family of biotin-dependent carboxylases and is found widely among eukaryotic tissues and in many prokaryotic species. It catalyses the ATP-dependent carboxylation of pyruvate to form oxaloacetate which may be utilised in the synthesis of glucose, fat, some amino acids or their derivatives and several
Wallace, J. +2 more
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Pyruvate carboxylase [EC 6.4.1.1] is a member of the family of biotin-dependent carboxylases and is found widely among eukaryotic tissues and in many prokaryotic species. It catalyses the ATP-dependent carboxylation of pyruvate to form oxaloacetate which may be utilised in the synthesis of glucose, fat, some amino acids or their derivatives and several
Wallace, J. +2 more
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Analytica Chimica Acta, 1980
Abstract Pyruvate oxidase (E.C. 1.2.3.3.) is immobilized by adsorption on a porous acetylcellulose membrane, and combined with an oxygen electrode to provide a sensor for pyruvate (0.1–0.8 mM). The response time is 2 min. Glutamate pyruvate transaminase (0.5–180 × 10 -3 I.U. ml -1 ) is determined by its effect on pyruvate production by the alanine—α-
Kunio Matsumoto +4 more
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Abstract Pyruvate oxidase (E.C. 1.2.3.3.) is immobilized by adsorption on a porous acetylcellulose membrane, and combined with an oxygen electrode to provide a sensor for pyruvate (0.1–0.8 mM). The response time is 2 min. Glutamate pyruvate transaminase (0.5–180 × 10 -3 I.U. ml -1 ) is determined by its effect on pyruvate production by the alanine—α-
Kunio Matsumoto +4 more
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Pyruvate carboxylase deficiency
Journal of Inherited Metabolic Disease, 1984AbstractThe causes of congenital lactic acidaemia are outlined. Isolated pyruvate carboxylase deficiency is reviewed in detail with a report of a recent case and a discussion of the biochemical consequences. Other causes of defective pyruvate carboxylation are described, particularly the combined carboxylase defects.
Janet-H. Stirk +4 more
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Pyruvate carboxylase: Affinity labelling of the pyruvate binding site
Biochemical and Biophysical Research Communications, 1975Abstract The active-site-directed reagent, bromopyruvate has been used to covalently label the pyruvate binding site of pyruvate carboxylase (E.C.6.4.1.1.) isolated from sheep liver. Oxalo-acetate proved to be the most effective reaction component in protecting the enzyme against inactivation; pyruvate was less effective although its efficiency was ...
John C. Wallace +2 more
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Effects of pyruvate on pyruvate dehydrogenase kinase of rat heart
Molecular and Cellular Biochemistry, 1995Sensitivity of rat heart pyruvate dehydrogenase kinase (PDHK) to pyruvate inhibition was tested under various conditions using pyruvate dehydrogenase complex (PDC) in mitochondria (mPDC) and in a high speed precipitate of whole tissue homogenates (hPDC).
Haldane G. Coore, Tonia C. Carter
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Pyruvate inhibition of pyruvate dehydrogenase kinase is a physiological variable
Biochemical and Biophysical Research Communications, 1985Pyruvate inhibited pyruvate dehydrogenase kinase activity in mitochondria from adipose tissue, heart, brain and kidney of fed rats. Starvation for 24 h led to increased kinase activity in mitochondria from adipose tissue and heart but not from brain or kidney and to reduction of pyruvate inhibition of the enzyme from adipose tissue, heart and brain ...
Deborah Lyn, Haldane G. Coore
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Pyruvate Carboxylase and Pyruvate Dehydrogenase Deficiency [PDF]
, 2014 Pyruvate carboxylase and pyruvate dehydrogenase deficiency are the most common disorders in pyruvate metabolism and almost always affect the central nervous system. The severity and the clinical phenotypes vary, with a range from overwhelming neonatal lactic acidosis and early death to milder presentations.
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Regulation of pyruvate carboxylase activity by pyruvate in mice liver
International Journal of Biochemistry, 1979Abstract 1. 1. In order to study in vivo the possible regulatory role of pyruvate concentrations on pyruvate carboxylase activity. fed or 24 hr-fasted mice received various overloads of unlabeled pyruvate. 2. 2. The effect of these overloads on the incorporation of [2- 14 C]pyruvate into blood glucose was studied. 3. 3.
P. Favarger, Simonne Rous, Sylvette Bas
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