THE AMINO ACID COMPOSITION OF ALDOLASE AND d-GLYCERALDEHYDE PHOSPHATE DEHYDROGENASE
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چکیده
منابع مشابه
Mechanism of glyceraldehyde-3-phosphate transfer from aldolase to glyceraldehyde-3-phosphate dehydrogenase.
The catalytic interaction of glyceraldehyde-3-phosphate dehydrogenase with glyceraldehyde 3-phosphate has been examined by transient-state kinetic methods. The results confirm previous reports that the apparent Km for oxidative phosphorylation of glyceraldehyde 3-phosphate decreases at least 50-fold when the substrate is generated in a coupled reaction system through the action of aldolase on f...
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Glyceraldehyde 3-phosphate exists as the geminal diol and the free aldehyde in the molar ratio 29:1 in aqueous solution. The rate constant of the conversion of diol into aldehyde is 8.7x10(-2)sec.(-1) in the pH range 7.3-8.6 at 20 degrees . The free aldehyde is the substrate for d-glyceraldehyde 3-phosphate dehydrogenase. Over a wide concentration range of enzyme the rate of conversion of diol ...
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e.g. phosphoglucomutase, glucose 6-phosphate dehydrogenase and fructose 6-phosphate kinase. However, if the reaction occurs distant from the anomeric carbon atom of the substrate the enzymes show no anomeric specificity, e.g. hexokinase, glucokinase and glucose 6-phosphatase (Wurster & Hess, 1974~). A search for enzymes catalysing anomerization reactions leads to the following conclusion. For D...
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Fructose diphosphate aldolase and glyceraldehyde 3-phosphate dehydrogenase have been crystallized from rabbit livers after single or sequential injections of [‘“Cland (3H]lysine. The specific radioactivity of the lysine in the dehydrogenase rises continuously and reaches a maximum during the 5th day after injection, whereas that of the aldolase declines exponentially from the middle of the 1st ...
متن کاملAmino acid control of the human glyceraldehyde 3-phosphate dehydrogenase gene transcription in hepatocyte.
Glutamine (Gln) is the most potent of the amino acids (AAs) that regulate liver anabolism, and its effect is similar to that of insulin in peripheral tissues. However, the influence of AAs on regulation of metabolic enzyme-encoding genes is not known at the molecular level in liver. We now report that Gln and some essential AAs activate the human GAPDH gene that codes for GAPDH, a central enzym...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1948
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)57434-2