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Your search keyword '"de Boeck, S."' showing total 4 results
Start Over Author "de Boeck, S." Topic purines
4 results on '"de Boeck, S."'

2. Purine and pyrimidine derivatives in the hen's egg.

Author

De Boeck S and Stockx J

Subjects
Chromatography, Ion Exchange, DNA metabolism, Deoxyuridine isolation & purification, Egg Yolk analysis, Female, Hydrogen-Ion Concentration, Hypoxanthines isolation & purification, Nucleosides isolation & purification, RNA metabolism, Uracil isolation & purification, Uric Acid isolation & purification, Uridine isolation & purification, Xanthines isolation & purification, Egg White analysis, Purines isolation & purification, Pyrimidines isolation & purification
Published
1970
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3. Metabolism of purine bases in the hen's egg.

Author

de Boeck S and Stockx J

Subjects
Animals, Chickens, Chromatography, Gel, Egg Yolk, Female, Spectrophotometry, Ultraviolet, Ovum metabolism, Purines metabolism
Published
1973

4. A purine N1-C6 hydrolase activity in the chicken egg yolk: a vestigial enzyme?

Author

De Boeck S and Stockx J

Subjects
Purine, Xanthine Oxidase, food.ingredient, Urate Oxidase, Chick Embryo, Biochemistry, Substrate Specificity, chemistry.chemical_compound, Hydrolysis, food, Clostridium, Aminohydrolases, Yolk, Blood plasma, Animals, Allantoin, Xanthine oxidase, chemistry.chemical_classification, biology, Xanthine, biology.organism_classification, Egg Yolk, Enzyme, chemistry, Liver, Purines, Female, Chickens
Abstract

All attempts to prove the presence of xanthine oxidase and uricase in yolk preparations failed. We were able instead to show that yolk preparations could hydrolyze the N1-C6 bond of certain purine bases. In the case of xanthine, 4-ureido-imidazole-5-carboxylic acid and 4-ureido-imidazole are formed. Activity only becomes apparent during purification. An analogous enzyme was described earlier in Clostridium cyclindrosporum. The liver and the blood plasma of actively laying hens do not contain the enzyme. A scheme for the degradation of egg ribonucleic acids is presented.

Published
1978

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