Basic Side Chains Histidine Lysine and Arginine

These are hydrophilic amino acids that are positively charged at neutral pH. The imidazole group of his-tidine has a pKa just below 7, so it is weakly ionized at physiological pH, giving it some buffering capacity and making it useful at the active site of many enzymes. Histidine is also a precursor for the physiologically active amine histamine. Arginine is an intermediate in the urea cycle and a precursor for polyamine synthesis. It is also the precursor for nitric oxide, which appears to have many physiologically important properties, including that of an endothelial-derived relaxing factor and a cell signaling molecule in the coordination of the inflammatory response. Although arginine, like glutamine, is a nonessential amino acid, there is evidence that increasing the dietary supply of arginine can improve clinical outcome in critically ill patients. Lysine is the limiting amino acid in cereals and cereal-based diets.

5 Ways To Get Rid Of The Baby Fat

5 Ways To Get Rid Of The Baby Fat

Many women who have recently given birth are always interested in attempting to lose some of that extra weight that traditionally accompanies having a baby. What many of these women do not entirely realize is the fact that breast-feeding can not only help provide the baby with essential vitamins and nutrients, but can also help in the weight-loss process.

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