منابع مشابه
The synthesis of neuramin lactose by preparations of rat mammary gland and its relation to the synthesis of lactose.
Lactose and neuramin lactose were produced by incubating subcellular particles from rat mammary gland in a system containing glucose, uridine diphosphate galactose, and cytidine monophosphate N-acetylneuraminic acid. The K, values for glucose in the synthesis of neuramin lactose were fairly constant for three similarly prepared enzyme preparations (0.25, 0.17, and 0.22 m&r), but were widely dis...
متن کاملThe Synthesis of Neuramin Lactose by Preparations of Rat Mammary Gland and Its Relation to the Symthesis of Lactose*
Lactose and neuramin lactose were produced by incubating subcellular particles from rat mammary gland in a system containing glucose, uridine diphosphate galactose, and cytidine monophosphate N-acetylneuraminic acid. The K, values for glucose in the synthesis of neuramin lactose were fairly constant for three similarly prepared enzyme preparations (0.25, 0.17, and 0.22 m&r), but were widely dis...
متن کاملFrom 'lactose intolerance' to 'lactose nutrition'.
The concept of lactose intolerance has become embedded in Western medicine and developing economy medicine. It is based on evidence that intestinal lactase activity persists into later childhood and throughout life in only a minority of the world's population, notably northern European-derived populations. These people have the T single nucleotide polymorphism (SNP) of the rs49882359 allele (C/...
متن کاملLactose synthesis. VI. Labeling of lactose precursors by glycerol-1,3-C-14 and glucose-2-C-14.
It is generally agreed that blood glucose is the major source of carbon for the synthesis of both hexose portions of lactose by the mammary gland (1, 2), but the exact mechanism of lactose synthesis remains in doubt. An abridged outline of some possible pathways of labeled carbon in the biosynthesis of lactose is presented in Fig. 1. In Reaction A of Fig. 1, uridine diphosphate galactose is the...
متن کاملLactose synthesis. II. The distribution of C14 in lactose of milk from the perfused isolated cow udder.
The distribution of Cl4 in milk lactose after intravenous injection of various labeled compounds has been determined by Schambye, Wood, and Kleiber (l), who found that the Cl4 pattern of the glucose differed from that of the galactose particularly when acetate-l-Cl4 or NaHC403 was administered. They proposed that free glucose (in equilibrium with blood glucose) was the precursor of the glucose ...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1958
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)49325-8