Provides the (R)-glutamate required for cell wall biosynthesis. L-glutamate = D-glutamate The low basal catalytic activity in increased 1000-fold in the presence of UDP-MurNAc-L-Ala, the product of the preceding enzyme in the peptidoglycan biosynthesis. Cell wall biogenesis; peptidoglycan biosynthesis. Monomer. Belongs to the aspartate/glutamate racemases family. Extended N-terminus. Extended N-terminus. Extended N-terminus. Extended N-terminus.