Spermidine is biogenic polyamine formed from putrescine, a precursor of spermine. Spermidine has a role in cell growth processes and the formation and interconversion of spermidine in mammalian cells has been reported. Spermidine binds to and activates NMDA(N-Methyl-D-Aspartate receptor) and has…

L-Tryptophan is an amino acid precursor of serotonin and melatonin.

L-Glutamine, the uncharged and amidated analog of L-glutamic acid, is an important amino acid for the incorporation of NH4+ into biomolecules. It is biosynthesized from NH4+ and glutamate via the enzyme glutamate synthetase. In turn, degradation of glutamine to free the ammonia moiety is mediated…

L-Serine is one of the two biological amino acids with a hydroxyl substituted side chain, and thus is hydrophilic in character. L-serine is used in the study of influence of pulsed applications of serine on polyglucose synthesis by Fusobacterium nucleatum cultures. Supplementation of minimal…