The role of the pyridine nucleotide cycle in the biosynthesis of ricinine

Competitive feeding experiments were performed using castor bean seedlings to determine the effect of NAD on the incorporation of radioactive quinolinic acid into the alkaloid ricinine. The exogenous NAD did not cause a decrease in the total radioactivity incorporated into the ricinine as expected,...

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Bibliographic Details
Published inPhytochemistry (Oxford) Vol. 8; no. 10; pp. 1927 - 1930
Main Authors Hiles, R.A., Byerrum, R.U.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.01.1969
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Summary:Competitive feeding experiments were performed using castor bean seedlings to determine the effect of NAD on the incorporation of radioactive quinolinic acid into the alkaloid ricinine. The exogenous NAD did not cause a decrease in the total radioactivity incorporated into the ricinine as expected, but instead caused an increase. Data previously presented by other investigators was re-examined in light of this new finding. It was concluded that the existing evidence supports the hypothesis that NAD and ricinine are made from quinolinic acid by separate pathways.
ISSN:0031-9422
1873-3700
DOI:10.1016/S0031-9422(00)88078-4