Creatine, the energy buffer in skeletal muscle, is made from Gly, Arg, and Met Glutathione, the "redox buffer", is derived from Glu 's. and Gly Indole-3-acetate ( or auxin), the plant growth hormone, is derived from Trp Many important neurotransmitters, e.g., g aminobutyrate(GABA), serotonin(5 norepinephrine, epinephrine are derived from e ne. hydroxytryptamine,or5HI,5-羟色胺), dopa acids via simple pathways: all include a Plp amino depedent decarboxylation reaction• Creatine, the “energy buffer” in skeletal muscle, is made from Gly, Arg, and Met. • Glutathione, the “redox buffer”, is derived from Glu, Cys, and Gly. • Indole-3-acetate (or auxin), the plant growth hormone, is derived from Trp. • Many important neurotransmitters, e.g., g￾aminobutyrate (GABA), serotonin (5- hydroxytrptamine, or 5-HT, 5-羟色胺), dopamine, norepinephrine, epinephrine are derived from amino acids via simple pathways: all include a PLP￾depedent decarboxylation reaction