Biosynthesis of Protein Amino Acids in Plant Tissue Culture. III. Studies on the Biosynthesis of Arginine

Abstract
Evidence from isotope competition studies and enzyme studies indicates that N-acetyl glutamic semialdehyde, [alpha] -N-acetyl-L-ornithine, L-ornithine and L-citrulline are intermediates between glucose and arginine in cells of Paul''s Scarlet Rose. Evidence for the presence of [alpha] -N-acetyl-ornithine aminotransferase (E. C. 2.6.1.11) in cell-free extracts was obtained.