tripeptide glutathione Structure of the (GSH). Glutamic acid (Glu) is Glutathione as the initial acceptor.
Description
A Novel Catalase Mutation (a GA Insertion) Causes the Hungarian Type of Acatalasemia

somatotropin release inhibitory factor or SRIF) is derived from a 116 amino acid prohormone to give rise to two principal forms, somatostatin-28 and -14 (316)

They work best together, as vitamin C improves glutathione absorption and effectiveness
For an interesting instance, during microspore development, the RbohE gene is expressed in Arabidopsis

10.1124/jpet.105.083386 157 LiX.HuaS.ZhongD.ZhouM.DingZ
