Transamination non enzymatique des acides aminés phosphoniques
The authors have performed a comparative study of the non-enzymic transamination of ten aminophosphonic acids and their carboxylic analogues with some carbonyl compounds (α-oxo acids, pyridoxal, pyridoxal phosphate). An unfavourable influence of the phosphonic group towards the yield of the transami...
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Published in | Biochimica et biophysica acta. General subjects Vol. 252; no. 3; pp. 506 - 515 |
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Main Authors | , , |
Format | Journal Article |
Language | French |
Published |
Elsevier B.V
1971
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Subjects | |
Online Access | Get full text |
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Summary: | The authors have performed a comparative study of the non-enzymic transamination of ten aminophosphonic acids and their carboxylic analogues with some carbonyl compounds (α-oxo acids, pyridoxal, pyridoxal phosphate). An unfavourable influence of the phosphonic group towards the yield of the transamination reaction is shown by chromatography. On the other hand, a great affinity of α-aminophosphonic acids for pyridoxal phosphate is demonstrated using spectrophotometric methods. These results will emphasize the influence of the acid function, besides other structural factors, in the transamination reaction of amino acids.
Nous avons réalisé une étude comparée de la transamination non enzymatique de dix acides aminés phosphoniques et de leurs analogues carboxyliques en présence de neuf acides α-carbonylés, du pyridoxal et du phosphate de pyridoxal. La chromatographie permet de montrer l'influence défavorable du groupement phosphonique sur le rendement de la transamination. En revanche, les tracés spectrophotométriques révèlent la grande affinité des acides phosphoniques α-aminés pour le pyridoxal-phosphate. Ces résultats soulignent l'influence importante que joue la fonction acide, à côté d'autres facteurs structuraux, dans la transamination des aminoacides. |
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ISSN: | 0304-4165 1872-8006 |
DOI: | 10.1016/0304-4165(71)90153-X |