Description_x000D_ General description_x000D_ D-Glutamic acid is an essential constituent of the bacterial peptidoglycan structure. It is added to UDP-N-acetylmuramyl-L-alanine (UDP-MurNAc-L-alanine) by the enzyme D-glutamic acid-adding enzyme (murD). This is, then, incorporated into the peptidoglycan precursor. Peptidoglycan makes up the cell walls of Gram-positive and -negative bacteria. The conversion of L-glutamate to D-glutamate by glutamate racemase (GR) enzyme is an essential step in the synthesis of peptidoglycan._x000D_ Application_x000D_ D-glutamic acid is suitable for use in the structure-affinity relationship (SAR)-study of GR (glutamate racemase) enzyme and its inhibitors._x000D_ Packaging_x000D_ 1, 5, 25, 100 g in poly bottle_x000D_ Biochem/physiol Actions_x000D_ Unnatural isomer of glutamic acid.