Abstract
The present experiment was conducted to investigate the rate of oxygen consumption in relation to the several amino acids in the Mang-Kong frog ,Gallula tornieri VOGT. 1. When the liver tissue was suspended in the Ringer's solution (0.85% NaCl), the amount of oxygen consumption per hour was 0.043$\mu$l/mg , whereas when it was suspended in M/15, pH 5.8 phosphate buffer the oxygen consumption reached 0.93$\mu$l/mg. 2. When 0.5ml of 1% alanine and 0.5ml of 0.5% arginine were used as respiratory material the amount of oxygen consumption increased remarkably, while on the other hand glycine showed little influence on the amount of oxygen consumption. 3. When 0.5ml of 0.1% , 0.5% alanine-arginine mixture, 0.5ml of 0.1% , 0.5% alanine-glycine mixture and 0.5ml of 1 % arginine-glycine were added the oxygen consumption in the liver tissue increased somewhat in comparison to the case in which single amino acid was used. 4. Glycine appeared to have influence on the respiration of the liver tissue but the amount of oxygen consumption increased as the concentration of arginine-glycine mixture increased, whereas the rate of oxygen consumption increased remarkably as alaninie-glycine mixture decreased. It was evidenced that in the combination of alanine-arginine the rate of oxygen consumption increased as the concentration of the mixture decreased and vice versa.