The engineered mice contained heightened quantities of RNA, the
precursor of
protein synthesis, for the cytokines interleukin - 1 beta and tumor necrosis factor
alpha.
Whey
alpha - lactalbumin is the major
protein in breast milk, which is important in lactose formation, and is rich in tryptophan (TRP), the essential amino acid that serves as a
precursor for the neurotransmitters serotonin and melatonin.