L-histidine is an essential amino acid with a basic side chain, and is hydrophilic in character. It contains an imidazole group in the side chain. Histidine is biosynthesized from ATP, 5-phosphoribosyl-1-pyrophosphate (PRPP), and glutamine. In turn, histidine is degraded to glutamate by histidase,…

DL-Threonine is an essential α - amino acid classified as polar which has two chiral centers. In plants and micro-organisms, threonine is synthesized from aspartic acid via aspartyl - semialdehyde and homoserine. DL-Threonine is as an additive to animal feed. They are also used to chelate…