C14-Oxylipin glucosides isolated from Lemna paucicostata
نویسندگان
چکیده
منابع مشابه
C14-oxylipin glucosides isolated from Lemna paucicostata.
Oxylipin glucosides (2-4) were isolated from Lemna paucicostata with their structures and absolute configurations elucidated by spectroscopic and chemical methods. Compounds 2-4 were glucosides of C14 oxylipin which were synthesized from alpha-linolenic acid via the 9-lipoxygenase pathway.
متن کاملThreonine Synthase of Lemna paucicostata Hegelm. 6746.
Threonine synthase (TS) was purified approximately 40-fold from Lemna paucicostata, and some of its properties determined by use of a sensitive and specific assay. During the course of its purification, TS was separated from cystathionine gamma-synthase, establishing the separate identity of these enzymes. Compared to cystathionine gamma-synthase, TS is relatively insensitive to irreversible in...
متن کاملAspartokinase of Lemna paucicostata Hegelm. 6746.
A sensitive and specific method was developed for assay of aspartokinase (EC 2.7.2.4) in crude extracts of Lemna paucicostata. Lysine inhibited approximately 93%, and threonine approximately 6%; together, these amino acids inhibited 99%. Inhibition by lysine was synergistically increased by S-adenosylmethionine, which by itself had no effect on activity. Essentially complete inhibition of threo...
متن کاملAntibacterial aromatic compound and steroid glycoside isolated from duckweed Lemna paucicostata Hegelm
Lemna paucicostata Hegelm is traditionally used as healthy feed for fish, broilers and as a source for vitamin A. In the present study, we report the isolation of an aromatic compound and a steroid glycoside from Lemna pauciscostata . The methanolic extract of dried and powdered Lemna paucicostata was fractionated using solid phase extraction (SPE). The compound was collected in a series of fra...
متن کاملUptake of Choline and Ethanolamine by Lemna paucicostata Hegelm. 6746.
Lemna paucicostata Hegelm. 6746 possesses specific systems for uptake of choline and ethanolamine. Each is distinct from the six other systems for uptake of organic compounds so far identified in this plant. Both systems show biphasic kinetics, so that uptake by them can be described as the composite result of two Michaelis-Menten processes. Inhibitor studies are reported which indicate the ver...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Phytochemistry
سال: 2010
ISSN: 0031-9422
DOI: 10.1016/j.phytochem.2010.04.015