Niacin Biosynthesis in Seedlings of Zea mays1

AUTOR(ES)

Tarr, John B.

RESUMO

Evidence obtained from incubation of corn (Zea mays cv. Golden Bantam) seedlings in dl-[benzene ring-U-14C]tryptophan, l-[5-3H]tryptophan, l-[U-14C]aspartate and [U-14C]glycerol indicates that niacin is synthesized in these plants via oxidative degradation of tryptophan. Aspartate and glycerol do not appear to be precursors of niacin in corn seedlings.

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