D-amino acids are predominantly produced and utilized by bacteria. They are involved in the synthesis and cross-linking of peptidoglycan. Furthermore, oxidative catabolism of D-amino acids, via the D-amino acid dehydrogensae pathway, sustains energy production for cellular functions. Only a few decades ago, it was largely believed that free D-amino acids were restricted to bacteria. Often, D-am...

I. Amino Acids A. Alkylamino Acids: :-Alkylamino acids, L-proline, L-valine. B. Hydroxyamino Acids: L-Serine, L-threonine, D-allothreonine, L-isoserine. C. Amino-amino Acids: L-2,3-Diaminopropionic acid, L-2,4-diaminobutyric acid. D. Carboxyamino Acids: L-Aspartic acid, 3-amino-pentanedioic acids. E. Thioamino Acids: D-Penicillamine, DOr L-methylcysteine, L-cysteine, L-methionine. F. Amido-amin...

background : immunogenicity of streptokinase (stk), as a thrombolytic drug, have limited its clinical use. elimination of the amino acid residues that are responsible for immunogenicity while don’t affect the bioactivity of stk is worthy. recently, we modified the stk through elimination of 42 amino acids from its’ c-terminal and assessed its bioactivity in vitro . objective : in this study, bi...

inib-the main external virulence factor of the bacterium listeria monueytogenes- contains seven parallelb-strands at its concave face with a patches of five exposed aromatic amino acids as a hot spot for host receptor(met) binding. for better understanding of energetic and physicochemical pmpendes, (u)folding transition,binding affinity and makmetic shielding censors of jab-crp-ii-sheet ab hull...

amino acids (aa) are important in poultry nutrition not only for protein deposition, but also for other metabolic functions; such as improving immune and gut functions. although, some table values are available on amino acids requirement, aa requirements may vary due to changes in dietary composition and breeding selection. thus amino acids requirements have remained an ongoing research topic. ...

abstract        background and objective: measurement of amino acids is an important tool for metabolic studies and evaluation of patients’ clinical condition. the aim of this study was to analyze the plasma amino acids using reverse phase high performance liquid chromatography techniques (rp-hplc) with pre-column derivatization by o-phthalaldehyde (opa) in combination with 3- mercaptopropionic...

arginine (arg) requirements of male broilers (ross 308) reared at high altitude (2100 mabove sea level) during the 1-to 3-week period was estimated in a graded supplementationmethod, in which six diets (230 g kg-1 cp and 3200 kcal me kg-1) with arg increments of1.25 g kg-1 were applied to four pens of fifteen birds each. dietary arg content of theexperimental groups ranged from 10 g kg-1 (80% o...