Probably cleaves the terminal D-Ala-D-Ala dipeptide of the peptidoglycan stem peptide (Probable). Shows weak D,D-carboxypeptidase activity in vitro (PubMed:22906310). Acts on the synthetic penta-peptide substrate Penta-DAP (L-Ala-gamma-D-Gln-DAP-D-Ala-D-Ala) (PubMed:22906310). The catalytic domain binds weakly to peptidoglycan in vitro (PubMed:25551456). Inhibited by the beta-lactam antibiotic meropenem. Cell wall biogenesis; peptidoglycan biosynthesis. Phosphorylated on Thr-336 by PknH. Belongs to the peptidase S11 family.