The formation of 3 alpha- and 3 beta-acetoxytropanes by Datura stramonium transformed root cultures involves two acetyl-CoA-dependent acyltransferases.

Abstract:

:Tropine (tropan-3 alpha-ol) is an intermediate in the formation of hyoscyamine. An acyltransferase activity that can acetylate tropine using acetylcoenzyme A as cosubstrate has been found in transformed root cultures of Datura stramonium. A further acyltransferase activity that acetylates pseudotropine (tropan-3 beta-ol) with acetyl-coenzyme A is also present. These two activities can be partially resolved by anion-exchange chromatography, some fractions containing only the pseudotropine-utilizing activity. The basic properties of these two enzymes are reported and their roles in forming the observed alkaloid spectrum of D. stramonium roots discussed.

journal_name

FEBS Lett

journal_title

FEBS letters

authors

Robins RJ,Bachmann P,Robinson T,Rhodes MJ,Yamada Y

doi

10.1016/0014-5793(91)80887-9

subject

Has Abstract

pub_date

1991-11-04 00:00:00

pages

293-7

issue

1-2

eissn

0014-5793

issn

1873-3468

pii

0014-5793(91)80887-9

journal_volume

292

pub_type

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