SEARCH Articles Figures Tables Evidence on the Pathways of Aromatic Amino Acid Biosynthesis Network of Glycerophospholipid Biosynthesis Pathways Proposed pathway of biosynthesis Reconstruction of l-AA Biosynthesis Pathway from Higher Organisms in Microorganisms Species differences and alternative pathways in the biosynthesis of bile acids The Common-Precursor Pathway of Aromatic Biosynthesis