Further Studies on the Biosynthesis of Stizolobinic Acid and Stizolobic Acid in the Etiolated Seedlings of Stizolobium hassjoo
Open Access
- 1 February 1976
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung C
- Vol. 31 (1-2) , 15-17
- https://doi.org/10.1515/znc-1976-1-206
Abstract
Incorporation of doubly labelled tyrosine into stizolobinic acid and stizolobic acid by the etiolated seedlings of Stizolobium hassjoo was studied. The retention of tritium activity in stizolobinic acid was 55%, while that in stizolobic acid was only 4.4% in average. The results strongly suggest that the heterocyclic rings of these two amino acids may be derived from 3,4-dihydroxyphenyl-alanine (DOPA) by extradiol cleavage of the aromatic ring.Keywords
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