A third unsaturated amino acid in groundnut plants: evidence for the occurrence of γ-amino-α-methylenebutyric acid
- 1 November 1953
- journal article
- research article
- Published by Portland Press Ltd. in Biochemical Journal
- Vol. 55 (4), 548-553
- https://doi.org/10.1042/bj0550548
Abstract
A third unsaturated amino acid was isolated in small quantity from groundnut plants (Arachis hypogaea). Elementary analysis indicated the empirical formula C5H9O2N. Chromatographic and other evidence indicated that the new compound is probably identical with the product of enzymic decarboxylation of [gamma]-methylene-glutamic acid, [gamma]-amino-[alpha]-methylenebutyric acid (4-amino-2-methylene-butanoic acid). Extracts of the fruits of a Capsicum sp. (red pepper) and of barley roots possess high decarboxylase activity for the [alpha]-carboxyl group of [gamma]-methyleneglutamic acid.Keywords
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