scholarly journals DIFFERENT INTERACTION OF ENANTIOMERIC ISOMERS OF AMINO ACIDS WITH OXYGEN ADDUCT OF EUTECTIC COMPOUND OF SODIUM CHLORIDE AND WATER

1991 ◽  
Vol 7 (Supple) ◽  
pp. 801-802
Author(s):  
SHIZUO FUJIWARA ◽  
YUKO NISHIMOTO
Keyword(s):  
Amino Acids ◽  
Sodium Chloride

scholarly journals The influence of the size and nature of basic activators on Clostridium perfringens polynucleotide phosphorylase-catalysed polyadenylic acid synthesis

1969 ◽  
Vol 112 (4) ◽  
pp. 497-503 ◽  
Author(s):  
P. S. Fitt ◽  
Helga Wille
Keyword(s):  
Amino Acids ◽  
Sodium Chloride ◽  
Chain Length ◽  
Clostridium Perfringens ◽  
Acid Synthesis ◽  
Weight Basis ◽  
Polynucleotide Phosphorylase ◽  
Enzymic Hydrolysis ◽  
Limited Effect ◽  
Polyadenylic Acid

1. Basic oligo- and poly-(amino acids) stimulate polyadenylic acid synthesis by purified Clostridium perfringens polynucleotide phosphorylase (nucleoside diphosphate–polyribonucleotide nucleotidyltransferase, EC 2.7.7.8). 2. The effectiveness of the activators increases with chain length up to approx. 20–30 residues. 3. Polymers of the l and dl series are equally effective on a weight-for-weight basis. 4. l-Lysine, d-lysine, diethylamine and triethylamine, as hydrochlorides or hydrobromides, all stimulate the reaction markedly if their concentration is high enough. Their effect is similar to that of sodium chloride. 5. The size of the product depends primarily on the Mg2+ concentration and basic polymers have a relatively limited effect on it. 6. Polyadenylic acid itself undergoes an Mg2+-catalysed non-enzymic hydrolysis.

A Study of Relations between the Absorption of Amino Acids, Dipeptides, Water and Electrolytes in the Normal Human Jejunum

1975 ◽  
Vol 49 (5) ◽  
pp. 401-408 ◽  
Author(s):  
D. B. A. Silk ◽  
P. D. Fairclough ◽  
Nicola J. Park ◽  
Annette E. Lane ◽  
Joan P. W. Webb ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Sodium Chloride ◽  
Human Subjects ◽  
Sodium Content ◽  
Sodium Chloride Solutions ◽  
Electrolyte Absorption ◽  
Wide Range ◽  
Osmotic Solution ◽  
Normal Human

1. A double-lumen perfusion technique was used to study the effect of a wide range of concentrations of the dipeptide glycyl-l-alanine and its constituent amino acids on water and electrolyte absorption from iso-osmotic solutions in the upper jejunum of normal human subjects. 2. There was no significant absorption of water and electrolytes from sodium chloride solution (150 mmol/l) but the presence of the dipeptide or its constituent amino acids stimulated water and electrolyte absorption. 3. Water absorption reached a peak at increasing amino acid and dipeptide concentrations and then tailed off. Our data suggest that the tailing off is not solely due to the diminished sodium content of the solutions. 4. During perfusion of the dipeptide-sodium chloride and amino acid-sodium chloride solutions solute and water were absorbed as an iso-osmotic solution. Analysis of the results indicates that this could occur at high dipeptide concentrations only if the majority of the dipeptide enters the cell intact.

scholarly journals Investigations on the Effects of Salts and Carbohydrates on L-Lysine in Aqueous System at T=293.15K

2021 ◽  
Vol 37 (3) ◽  
pp. 704-709
Author(s):  
Rajesh Kumar Sharma ◽  
Priyanka Sharma
Keyword(s):  
Experimental Data ◽  
Amino Acids ◽  
Surface Tension ◽  
Sodium Chloride ◽  
Physicochemical Parameters ◽  
Aqueous System ◽  
Specific Conductance ◽  
Stabilization Mechanism ◽  
Solvent Interactions ◽  
Physicochemical Studies

Physicochemical studies of amino acids in an aqueous medium can provide significant knowledge about the stabilization mechanism of proteins.In this study, the viscosity (ƞ), surface tension (γ), density (ρ) and the specific conductance (κ) measurements have been carried out for amino acid L-lysine (0.02 to 1.6M) in aqueous solutions at 293.15K. The experimental data shows that there is an increase in the viscosity, surface tension, conductance, and density of the L-lysine with and without glucose, sucrose, sodium chloride, and potassium chloride with concentration.The solute-solute and solute-solvent interactions have been discussed on the basis of all physicochemical parameters.

VIBRIO CHOLERAE IN FLUID MEDIA

1950 ◽  
Vol 28e (6) ◽  
pp. 257-261
Author(s):  
L. E. Ranta ◽  
Mary McLeod
Keyword(s):  
Carbon Dioxide ◽  
Amino Acids ◽  
Sodium Chloride ◽  
Sodium Bicarbonate ◽  
Inorganic Salts ◽  
Distilled Water ◽  
Hydrogen Phosphate ◽  
Fluid Medium ◽  
Dipotassium Hydrogen Phosphate ◽  
Fluid Media

Studies have been made of the growth of V. cholerae in fluid media of chemically defined compositions. The addition of three amino acids, tyrosine, asparagine, and glycine, to a fluid medium containing inorganic salts produced a growth of V. cholerae equivalent to a 450 p.p.m. silica standard. Under conditions of aeration with an air and carbon dioxide mixture, yields comparable to the turbidity of a 1600 p.p.m. silica standard were obtained with a medium composed of 0.67 gm. of tyrosine, 0.42 gm. of asparagine, 0.51 gm. of glycine, 5.0 gm. of sodium chloride, 5.0 gm. of ammonium sulphate, 0.75 gm. of dipotassium hydrogen phosphate, 0.1 gm. of magnesium sulphate, 10.0 gm. of glucose, and 15.0 gm. of sodium bicarbonate dissolved in one liter of distilled water.

Amino Acid and Protein Metabolism in Hospitalized Patients as Measured by l-[U-14C]Tyrosine and l-[1-14C]Leucine

1983 ◽  
Vol 65 (5) ◽  
pp. 499-505 ◽  
Author(s):  
Sukumar P. Desai ◽  
Lyle L. Moldawer ◽  
Bruce R. Bistrian ◽  
George L. Blackburn
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Sodium Chloride ◽  
Hospitalized Patients ◽  
Whole Body ◽  
Protein Kinetics ◽  
Body Protein ◽  
Sodium Chloride Solutions ◽  
Isotonic Sodium Chloride ◽  
Plasma Tyrosine

1. Plasma amino acid kinetics were determined in hospitalized patients receiving one of three intravenous solutions: isotonic amino acids, isotonic sodium chloride, or total parenteral nutrition. 2. Whole body amino acid appearance, oxidation and incorporation into protein were estimated with two different isotopically labelled amino acids: l-[1-14C]leucine and l-[U-14C]tyrosine. 3. A positive correlation was obtained between whole body amino acid appearance, oxidation and incorporation into protein with the two isotopically labelled amino acids. 4. Derivation of whole body protein kinetics with l-[U-14C]tyrosine consistently gave higher values than those obtained from l-[1-14C]leucine, presumably due in part to the contribution of phenylalanine hydroxylation to plasma tyrosine appearance. However, the percentages of amino acid appearance oxidized and used for protein synthesis were similar. 5. It can be concluded that estimates of whole body protein kinetics are qualitatively similar when measured with l-[U-14C]tyrosine and l-[1-14C]leucine in hospitalized patients receiving either isotonic sodium chloride solutions or balanced amino acid intakes.

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