The Biosynthesis of Cyanogenic Glycosides in Higher Plants

The Biosynthesis of Cyanogenic Glycosides in Higher Plants

An enzyme which catalyzes the transfer of glucose from UDP-glucose to a-hydroxyisobutyronitrile (acetone cyanohydrin) has been isolated from flax seedlings (Zinum usifafissimum L). The product of this reaction was shown to be identical with linamarin, one of the two cyanogenic glucosides produced by the flax plant. The partially purified UDP-glucose-ketone cyanohydrm /3-glucosyltransferase exhi...

Cyanogenic Glycosides in Plant Foods

The biosynthesis of cyanogenic glycosides in higher plants. I. Purification and properties of a uridine diphosphate-glucose-ketone cyanohydrin beta-glucosyltransferase from Linum usitatissimum L.

An enzyme which catalyzes the transfer of glucose from UDP-glucose to a-hydroxyisobutyronitrile (acetone cyanohydrin) has been isolated from flax seedlings (Zinum usifafissimum L). The product of this reaction was shown to be identical with linamarin, one of the two cyanogenic glucosides produced by the flax plant. The partially purified UDP-glucose-ketone cyanohydrm /3-glucosyltransferase exhi...

Cyanogenic and non-cyanogenic glycosides from Manihot esculenta.

In addition to lotaustralin and linamarin, a novel cyanogenic glycoside, 2-((6-O-(beta-D-apiofuranosyl)-beta-D-glucopyranosyl)oxy)-2-met hylbutanenitrile , two novel non-cyanogenic glycosides, (2S)-((6-O-(beta-D-apiofuranosyl)-beta-D- glucopyranosyl)oxy)butane and 2-((6-O-(beta-D-apiofuranosyl)-beta-D-glucopyranosyl)oxy)propane, and a simple non-cyanogenic glycoside, ethyl beta-D-glucopyranosid...

The biosynthesis of sterols in higher plants.

1. [2-(14)C]Mevalonate was incorporated into squalene and the major phytosterols of pea and maize leaves; it was also incorporated into compounds belonging to the 4,4-dimethyl and 4alpha-methyl steroid groups and which may be possible phytosterol intermediates. 2. l-[Me-(14)C]Methionine was incorporated into the major sterols and also into the 4,4-dimethyl and 4alpha-methyl steroid groups. No r...