Synthesis of Methylated Ethanolamine Moieties
نویسندگان
چکیده
منابع مشابه
Synthesis of methylated ethanolamine moieties: regulation by choline in lemna.
The results of experiments in which intact plants of Lemna paucicostata were labeled with either l-[(3)H(3)C]methionine, l-[(14)CH(3)]methionine, or [1,2-(14)C]ethanolamine support the conclusion that growth in concentrations of choline of 3.0 micromolar or above brings about marked decreases in the rate of biosynthesis of methylated forms of ethanolamine (normally present chiefly as phosphatid...
متن کاملSynthesis of methylated ethanolamine moieties: regulation by choline in soybean and carrot.
Cultured cell suspensions of both carrot (Daucus carota L.) and soybean (Glycine max) take up exogenous choline efficiently from their respective growth media. During sustained growth at a concentration near 50 micromolar choline, this compound was taken up at rates which exceeded those at which phosphatidylcholine, is synthesized by cells growing in standard (i.e. choline-free) media. In 50 mi...
متن کاملSynthesis of ethanolamine phosphoglycerides by human platelets.
Platelet homogenates contain an ethanolaminephosphotransferase (EC 2.7.8.1) that catalyzes the synthesis of ethanolamine phosphoglycerides from cytidine-5'-diphosphate ethanolamine and 1-radyl-2-acyl-sn-glycerols. The enzyme is particulate-bound and requires Mn2+ and bile salts for optimal activity. The apparent Km of the enzyme for cytidine-5'-diphosphate ethanolamine is 1.6 X 10(-5) M when th...
متن کاملThe enzymic synthesis of ethanolamine plasmalogens.
Enzymic synthesis of ethanolamine plasmalogens from l-14C-hexadecanol in cell-free systems from Ehrlich ascites and Freputial gland tumors of mice is documented. Identiiication of the ethanolamine plasmalogens is based on the preparation and chromatographic behavior of a number of chemical derivatives that take into account all three positions on the glycerol moiety. 14C-Derivatives isolated fr...
متن کاملThe utilization of ethanolamine and serine for ethanolamine phosphoglyceride synthesis by human Y79 retinoblastoma cells.
Phospholipid synthesis was investigated in human Y79 retinoblastoma cells, a cultured cell line of retinal origin that retains many neural characteristics. Ethanolamine is taken up by Y79 cells through a high-affinity transport system and is utilized to synthesize ethanolamine and choline phosphoglycerides. High-affinity ethanolamine uptake has a K'm of 40.6 microM and a V'max of 1.06 nmol/min/...
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: Plant Physiology
سال: 1989
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.90.1.296