• amino
  • It is not quite clear so far to what extent the requirement for total non-essential N can be influenced by the presence or absence of different non-essential amino acids. (karelsavry.us)
  • There are a number of studies indicating that some amino acids, commonly classified as non-essential, may have essential character (Breuer et al. (karelsavry.us)
  • Therefore, both the specific requirements for non-essential amino acids and the value of these amino acids in supplying the organism with non-specific nitrogen should be taken into account when studying the optimum E:T ratio and formulating amino acid diets . (karelsavry.us)
  • Results of studies aimed at identification of non-essential amino acids needed for normal performance have been controversial. (karelsavry.us)
  • This discrepancy might be due to the differences in dietary levels of metaboli-cally related amino acids. (karelsavry.us)
  • 1970) found in rats that if two amino acids of the pro-line-arginine-glutamate group were omitted from the diet, growth was markedly reduced. (karelsavry.us)
  • Glutamate plays an important role in protein metabolism since it serves as the main medium in amino-N exchange and is readily converted into other non-essential amino acids. (karelsavry.us)
  • 1975) investigated the effects of asparagine, aspartic acid, glutamine and glutamate in all possible combinations on growth of weanling rats, and concluded that only asparagine is essential regardless of the presence or absence of any combination of other related amino acids. (karelsavry.us)
  • A positive effect of glycine addition to diets with a high concentration of essential amino acids observed in kittens (Taylor et al. (karelsavry.us)
  • 1996) probably resulted from the ability of glycine to alleviate the toxic effects associated with excessive intake of sulphur amino acids (Benevenga and Steele, 1984). (karelsavry.us)
  • To date, it is not known whether there is a specific requirement for non-essential and semi-essential amino acids for maintenance. (karelsavry.us)
  • It is generally believed that, owing to the low needs for total N under maintenance conditions, both non-essential and semi-essential amino acids can be readily synthesized from their precursors. (karelsavry.us)
  • However, as discussed earlier, the maintenance requirement for nonessential N is relatively high and the synthesis of some non-essential or semi-essential amino acid(s) may not be sufficient to meet endogenous losses and specific requirements not related to protein metabolism. (karelsavry.us)
  • It was the aim of this study to examine the abundant myelin protein, myelin basic protein (MBP), to determine if there are sites of modification that may be characteristic for MS. MBP from the cerebellum was examined from controls and MS patients across the age range using mass spectrometry and amino acid analysis. (biomedcentral.com)
  • Amino acid racemization data indicated that myelin basic protein is long-lived and proteomic analysis of MBP showed it to be highly modified. (biomedcentral.com)