Degradation of nicotinamide adenine dinucleotide in cell suspension cultures |
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Authors: | Heiner Neuhann Karl-Wilhelm Leienbach Wolfgang Barz |
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Affiliation: | Lehrstuhl für Biochemie der Pflanzen der Universität, 4400 Münster, W. Germany |
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Abstract: | Metabolites of [carbonyl-14C]-NAD in cell suspension cultures of mung bean, soybean and garbanzo bean are trigonelline and compounds of the pyridine nucleotide cycle. Degradation of nicotinate does not occur. In parsley cell cultures nicotinate degradation and formation of nicotinic acid N-α-l-arabinoside were observed. These conjugates are alternative reservoir forms of nicotinic acid. The adenine moiety of NAD is degraded in cell cultures via hypoxanthine-xanthine-allantoin-allantoic acid, with accumulation of the latter two compounds. |
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Keywords: | Leguminosae Umbelliferae cell suspension cultures catabolism NAD trigonelline adenine allantoin. |
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