منابع مشابه
Studies in Protein Metabolism
There is no doubt that animals can synthesize certain amino acids, the ultimate source of the nitrogen being that of the food protein. This process probably occurs under normal conditions, as the average composition of food proteins is never the same as that of the body proteins into which they have to be converted. According to the generally accepted theory, amino acid synthesis in the animal ...
متن کاملPlasma Protein Metabolism—electrophoretic Studies
The findings on electrophoretic analysis of plasma proteins during many weeks of low protein feeding in dogs accord in general with those of chemical analysis as concerns the alterations in plasma albumin and globulin concentrations. Long continued restriction of dietary protein results in decreased albumin levels while plasma globulin concentrations remain essentially normal. The degree of dep...
متن کاملThe Use of Radioactive Lysine in Studies of Protein Metabolism
Racemic lysine labeled with C(14) in the epsilon carbon position was fed to dogs. The distribution of C(14) in blood and tissue fractions is recorded. In normal dogs sacrificed at 24 hours, approximately one-third of the C(14) was found in the urine, one-third in expired air, and one-third in the body, mostly in protein, predomantly as lysine residues. The rate of C(14) excretion as CO(2), hour...
متن کاملStudies in Inorganic Metabolism
Although considerable data have been gathered on the metabolism of the ash constituents, the literature concerning the interrelations between calcium and magnesium metabolism is very limited. This experiment was undertaken to ascertain whether an increased intake of calcium would affect the urinary and fecal excretion of magnesium and eice r’ersn, thus showing intcrrclations between the metabol...
متن کاملStudies in fetal metabolism.
The origin of the constituents of the mammalian fetus has been the subject of controversy, the literature of which has been exhaust,ively reviewed by Needham (1, 2) and Huggett (3). Two processes come into consideration: transplacental absorption from the maternal circulation and synthesis in t,he tissues of the fetus proper. In regard to the transplacental passage of fat,ty acids, the most imp...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1939
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)73484-4