Die Fermente des Auf- und Abbaus (besonders die speziellen Heterosidasen)

Veibel, Stig

doi:10.1007/978-3-642-94731-5_24

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1984

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“…The enzyme is known to hydrolyze fl-D-glucopyranosides, galactopyranosides, -xylopyranosides, -fucopyranosides, as well as a-L-arabinopyranosides (22). These five tryptophol glycosides were synthesized as standards, and only the glucoside and the galactoside co-chromatographed with the Euglena metabolites (Table I).…”

Section: Resultsmentioning

confidence: 99%

Formation of Tryptophol Galactoside and an Unknown Tryptophol Ester in Euglena gracilis

Laćan

Magnus²,

Jeričević³

et al. 1984

Plant Physiol.

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The unicellular alga Euglena grailis Klebs 'Z' converted exogenous indole-3-ethanol (tryptophol) to two major metabolites: tryptophol galactoside and an unknown compound, and to minor amounts of indole-3-acetic acid, tryptophol acetate, and tryptophol glucoside. The unknown was hydrolyzed to tryptophol by methanolic ammonia and should therefore be a tryptophol ester. The galactoside was identified as 24indol-3-yl)ethyl-,6-D-galactopyranoside. This structure was established by comparison with an authentic standard involving chromatographic methods, ultraviolet and mass spectroscopy, enzymic and acid hydrolysis, and identification of the galactose in the hydrolysate. By forming tryptophol galactoside, Eugkna differs from the higher plants examined so far, for which the corresponding glucoside is the only sugar conjupte of tryptophol detected.

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Section: Resultsmentioning

confidence: 99%