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Relationship of Mitochondrial Phosphoenolpyruvate Carboxykinase to Neonatal Gluconeogenesis
Biology of the Neonate, 2009Gluconeogenesis from (U-14C)-lactate occurred in hepatocytes prepared from term fetuses which lack cytosolic phosphoenolpyruvate carboxykinase and was almost completely inhibited by 3-mercaptopicolinate but was relatively insensitive to amino-oxyacetate. 12 h after birth when up to 32% of the total hepatic phosphoenolpyruvate carboxykinase activity was
M, Parameswaran, I J, Arinze
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Retinoid regulation of the phosphoenolpyruvate carboxykinase gene in liver
Molecular and Cellular Endocrinology, 2002The cytosolic PEPCK gene is a model gene for assessing retinoid regulation of liver-specific genes encoding enzymes of carbohydrate metabolism. In vivo, we have demonstrated that the PEPCK gene is inhibited by vitamin A deficiency. Specifically, under conditions of food deprivation, induction of the PEPCK gene is inhibited in the vitamin A deficient ...
Dong-Ju, Shin +4 more
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A mitochondrial phosphoenolpyruvate carboxykinase from rat brain
Archives of Biochemistry and Biophysics, 1972Phosphoenolpyruvate carboxykinase from the rat brain has been purified approximately 6000-fold. This purified enzyme was stable at −20 °C for several months. Phosphoenolpyruvate carboxykinase from the rat brain was found to be mitochondrial, in contrast to that in the rat liver where this enzyme was always present in the soluble form.
S C, Cheng, R H, Cheng
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Nucleotide specificity of pyruvate kinase and phosphoenolpyruvate carboxykinase
Biochimica et Biophysica Acta (BBA) - Enzymology, 1976Various analogues of adenosine 5'-diphosphate with modifications in the heterocyclic base residue were tested as substrates of rabbit muscle pyruvate kinase (ATP:pyruvate 2-O-phosphotransferase, EC. 2.7.1.40) and guinea pig liver mitochondrial phosphoenolpyruvate carboxykinase (GTP:oxaloacetate carboxy-lyase (transphosphorylating), EC 4.1.1.32).
Bârzu, O. +8 more
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Phosphoenolpyruvate carboxykinase and gluconeogenesis in cotyledons of Cucurbita pepo
Biochimica et Biophysica Acta (BBA) - Enzymology, 19781. The aim of this work was to investigate the role of phosphoenolpyruvate carboxykinase (ATP:oxaloacetate carboxy-lyase (transphosphorylating) EC 4.1.1.49) in the conversion of fat to sugar by the cotyledons of seedlings of Cucurbita pepo. 2. The enzyme was partially purified from the cotyledons of 5-day-old seedlings.
R C, Leegood, T, ap Rees
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Analogs of oxalacetate as potential substrates for phosphoenolpyruvate carboxykinase
Archives of Biochemistry and Biophysics, 1990Structural analogs of the substrate oxalacetate were examined as potential substrates and inhibitors for chicken liver mitochondrial phosphoenolpyruvate (P-enolpyruvate) carboxykinase. Steady-state kinetics were employed to characterize the inhibitory effects of these substrate analogs with the enzyme.
P F, Guidinger, T, Nowak
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phosphoenolpyruvate carboxykinase
Catalysis from A to Z, 2020F.‐S. Liang
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Enzymes | Phosphoenolpyruvate Carboxykinases
2021Matthew J. McLeod, Todd Holyoak
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Phosphoenolpyruvate carboxykinase activity in Ascaris suum muscle
Comparative Biochemistry and Physiology, 1969Abstract 1. 1. Phosphoenolpyruvate (PEP) carboxykinase activity was measured for four subcellular fractions of Ascaris suum muslce. Mos activity was associated with the soluble fraction. 2. 2. The reaction had a pH optimum of about 7·2. 3. 3. Mn ++ was a more effective promoter of the reaction than Mg ++ . 4. 4.
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