... N-acetylarginine, followed byincubation with CAS and appropriate cofactors resulted in the formation of 3-hydroxy-N-acetylarginine, as detected byHPLC analysis. The observation that arginine/N-acetylarg-inine ... producedusingL-arginine and L-glutamine compared toL-glutamatewere 24% and 16%, respectively, as determined by the ninhydrin assay. Lysine could not be measured as itinterfered with the ornithine derivatization ... the widely used amino-acidacylases [34], in particular for the resolution of racemicmixtures of certain amino acids with side chains containingpolar groups. The side-chain selectivity of the...