Affiliation:
1. 1Behringwerke, D-3550 Marburg.
2. 2Lehrstuhl für Biochemie der Pflanzen, Westfälische Wilhelms-Universität, Hindenburgplatz 55, D-4400 Münster
Abstract
Abstract Application of [6-14C]-or [7-14C]nicotinic acid to parsley cell suspension cultures led to the accumulation of labelled nicotinamide mononucleotide, nicotinamide adenine dinucleotide, nicotinamide N-riboside, nicotinamide and nicotinic acid, indicating the operation of the pyridine nucleotide cycle in these cells. As main conjugates, nicotinic acid N-glucoside and nicotinic acid glucose ester were found. For nicotinic acid degradation the following sequence is suggested: nicotinic acid → 6-hydroxynicotinic acid → 2,5-dihydroxypyridine → a C4/C3 unit of unknown structure → CO2. In aseptically grown parsley seedlings nicotinic acid is also degraded to CO2
Subject
General Biochemistry, Genetics and Molecular Biology
Cited by
4 articles.
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