The domesticated turkey is a large poultry bird. The modern domesticated form descends from the wild turkey (Meleagris gallopavo), one of the two species of turkey (genus Meleagris). It was domesticated by the indigenous peoples of Mesoamerica at least 2,000 years ago, with the evidence pointing to what are today the central regions of Mexico.
Turkey meat is a popular form of poultry, and turkeys are raised throughout temperate parts of the world, partially because industrialized farming has made it very cheap for the amount of meat it produces. Female domesticated turkeys are referred to as hens and the chicks may be called poults or turkeylings. In the United States, the males are referred to as toms, while in Europe, males are stags. The average lifespan for a domesticated turkey is ten years.]citation needed[
In enzymology, a tryptophan-phenylpyruvate transaminase (EC 18.104.22.168) is an enzyme that catalyzes the chemical reaction
Thus, the two substrates of this enzyme are L-tryptophan and phenylpyruvate, whereas its two products are (indol-3-yl)pyruvate and L-phenylalanine.