Amino acidMinimum requirement Empty CellInfants(mg kg−1)Men(g)Women(g) Arginine * 0 0 Histidine 34 0 0 Isoleucine 126 0·7 0·55 Leucine 150 1·1 0·73 Lysine 103 0·8 0·54 Methionine (in the presence of cysteine) 45 1·1 0·70 Phenylalanine (in the presence of tyrosine) 90...
1. The effects of short-term starvation and refeeding on the free amino acid concentrations of the intestinal mucosa were characterized in male subjects (n = 6), using endoscopically obtained biopsy specimens from the duodenum and from all four segments of the colon. 2. The alterations in the...
28,29,30,31]. We have recently found that short-term deprivation of a single essential amino acid can enhance nicotine tolerance of young adult flies, with 7-day exposure to an isoleucine dropout diet providing the greatest benefit of the pre-treatment durations ...
Amino acid metabolism is also reglulated by biosynthetic enzyme and catabolic enzyme. Numerous pharmacological inhibitors targeting key enzymes in amino acid metabolism undergo extensive research. Asparagine is the most successful and well-documented target in amino acid depletion therapy, especially in acu...
aged AF mice. Aged AF mice had lower levels of Betaine, L-histidine, L-alanine, L-arginine, L-Pyroglutamic acid, and L-Citrulline compared with adult AF mice. Aged AF mice also presented a different gut microbiota pattern, and its functional prediction analysis showed AA metabolism alteration...
Short and practical syntheses of (R)-(−)-carnitine and (R)-(−)-γ-amino-β-hydroxybutyric acid have been developed, both commencing with the catalytic asymmetric dihydroxylation of allyl bromide.DOI: 10.1016/S0957-4166(00)86023-1 年份...
Based on the information in this chapter, it is deduced that proline is unquestionably not the only amino acid accumulated by plants in response to different abiotic stresses, and that genomic resources and related pathways associated with the other amino acids must be characterized to further our...
These and other mutations that affected amino acid residues either side of the region from 127 to 133, previously shown to be essential to the nuclear localisation of large-T [D. Kalderon, W. D. Richardson, A. F. Markham, and ... D Kalderon,AE Smith - 《Virology》 被引量: 414发表:...
Proteins differ from one another in the number, modification, and sequence of amino acid residues in the polypeptide chains and in the number of chains making up the protein molecule. Hence, proteins differ widely in molecular weight. In addition, some proteins, the conjugated proteins, contain ...
2,2-Dimethylaziridine and 400ml dilute sulfuric acid aqueous solution, keep the temperature and slightly acidic condition, drop 2,2-dimethylaziridine, then continue to react at this temperature 1h, then under reduced pressure distillation to remove 80% of the water, add 500ml ethanol to the ...