Isoleucine
ISOLEUCINE is an essential branched-chain amino acid because it cannot be made in the body, but some still classify it as semi-essential. It is necessary for the optimal growth of infants and for nitrogen balance in adults. It is one of a group of amino acids found deficient in mentally and physically ill patients. A deficiency can produce symptoms similar to those for hypoglycemia. Isoleucine is produced through the hydrolysis of fibrin and other proteins and is metabolized in muscle tissue. It plays a primary role in hemoglobin formation and in regulating blood sugar and energy levels. If supplements are taken, isoleucine should accompany leucine to avoid producing a deficiency in one or the other. However, excess intakes can lead to pellagra.
Food sources include almonds, cashews, chicken, chickpeas, eggs, fish, lentils, liver, meat, rye, seeds, and soy protein.
Other names for isoleucine include: ISL, ISO, ILE, amino acid I, 2-amino-3-methyl-pentanoic acid.
