has role has role independent continuant L-phenylalanine L-phenylalaninate CHEBI:32486 (2S)-2-amino-3-phenylpropanoate L-phenylalanine anion An optically active form of phenylalaninate having L-configuration. D-phenylalaninate phenylalaninate L-alpha-amino acid anion Saccharomyces cerevisiae metabolite plant metabolite Escherichia coli metabolite