Threonine is amino acid used for biosynthesis... Threonine is amino acid used for biosynthesis of proteins in human body. This one is interesting because it contains an amino group, carboxylic group and an alcohol sidechain, which makes it polar, uncharged ! Another interesting fact is, that it is produced by bacteria E. coli 🙂 Get more interesting chemistry at www.benznote.com or follow us on Twitter and Facebook Your benznote 🙂 #mybenznote #carbonote #chemistry #threonine A post shared by benznote (@benznote) on Sep 13, 2017 at 9:55am PDT