3d image of erythrose 4-phosphate skeletal formula

erythrose 4-phosphate erythrose sugar intermediate pentose phosphate pathway calvin cycle precursor biosynthesis aromatic amino acid tyrosine phenylalanine tryptophan shikimate vitamin b6 dxp-dependent erythrose-4-phosphate dehydrogenase rendering metabolite metabolism mechanism path catabolism biosynthetic biogenesis substrate synthesis derivative bioprecursor metabolic enzyme endogenous contractor human metabolome database hmdb