has role O-phospho-L-serine The L-enantiomer of O-phosphoserine. O-phosphoserine O-phospho-D-serine O-phosphonato-L-serine(2-) EC 1.4.7.1 [glutamate synthase (ferredoxin)] inhibitor mouse metabolite Saccharomyces cerevisiae metabolite Escherichia coli metabolite EC 2.5.1.49 (O-acetylhomoserine aminocarboxypropyltransferase) inhibitor EC 4.3.1.10 (serine-sulfate ammonia-lyase) inhibitor