Amino Acid Activation in Plant Tissues

Amino acid metabolism in locust tissues.

Free amino acid contents in guinea pig tissues.

Free amino acid contents in various guinea pig tissues were determined with an amino acid analyzer. The most abundant amino acids in these tissues were: Gly and Glu in the liver and kidney, Gln, Glu and Ala in the heart, Glu and Gln in the brain, Gly in the blood plasma and Lys in erythrocytes. Glutathione was present as the reduced form in these tissues. Cystine was not detected except in the ...

The Estimation of Amino Acid Nitrogen in Animal Tissues

Of the existing methods for the determination of amino acid nitrogen in animal tissues, those of Folin and Denis (1) and of Van Slyke (2) are best known and most extensively employed. Both of them are long and tedious and call for rather large tissue samples. Also methyl alcohol containing zinc chloride is employed as an extractive by Folin and Denis and ethyl alcohol as a protein precipitant b...

Endocrine regulation of amino acid levels in blood and tissues.

Evidence has accumulated which indicates that hormones play an important r81e in protein metabolism. For example, according to the current concept growth hormone stimulates protein anabolism (1) and adrenal cortical extract increases glucose neogenesis at the expense of protein (2). Various invest,igators have tried to relate changes in the free amino acid of the blood to the endocrine regulati...

Activation of a system A amino acid transporter, ATA1/SLC38A1, in human hepatocellular carcinoma and preneoplastic liver tissues.

The expression of amino acid transporter (AT) mRNAs including A system (ATA1/SNAT1/SLC38A1, ATA2/SNAT2/SLC38A2 and ATA3/SNAT3/SLC38A4), L system (LAT1/SLC7A5 and LAT2/SLC7A8), and y+ (CAT2/SLC7A2) genes, were compared among hepatocellular carcinoma (HCC) and non-cancerous liver cells. Among them the ATA1 mRNA expression was significantly elevated in all HCC cell lines (HepG2, HLF, HuH7 and JHH4...