BIOLOGICAL RELATIONSHIPS OF CHOLINE, ETHANOLAMINE, AND RELATED COMPOUNDS
نویسندگان
چکیده
منابع مشابه
Yeast mutants auxotrophic for choline or ethanolamine.
Three mutants of the yeast Saccharomyces cerevisiae which require exogenous ethanolamine or choline were isolated. The mutants map to a single locus (cho1) on chromosome V. The lipid composition suggests that cho1 mutants do not synthesize phosphatidylserine under any growth conditions. If phosphatidylethanolamine or phosphatidylcholine, which are usually derived from phosphatidylserine, were s...
متن کاملThe biosynthesis of choline from serine and related compounds.
The reactions whereby the ethanolamine and methyl groups of choline are synthesized from serine and glycine in the rat have been briefly reported earlier (1). In the synthesis of the methyl groups from serine-p-Cl*D,OH, it was further shown that carbon-hydrogen bonds are not broken (2). This suggested that if a compound analogous to 5-formyl-5,6,7, S-tetrahydrofolic acid participates in the tra...
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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 کاملPurification and characterization of choline/ethanolamine kinase from rat liver.
Choline kinase, the first enzyme in the CDP-choline pathway for phosphatidylcholine biosynthesis, was purified 26,000-fold from rat liver to a specific activity of 143,000 nmol.min-1.mg-1 protein. The subunit molecular mass was 47 kDa by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, while the apparent native molecular mass was 160 kDa by size exclusion chromatography, suggesting a ...
متن کاملthe evaluation of language related engagment and task related engagment with the purpose of investigating the effect of metatalk and task typology
abstract while task-based instruction is considered as the most effective way to learn a language in the related literature, it is oversimplified on various grounds. different variables may affect how students are engaged with not only the language but also with the task itself. the present study was conducted to investigate language and task related engagement on the basis of the task typolog...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1941
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)51449-6