Bifunctional D-Ala-D-Ala dipeptidase and D-Ala-D-Ala carboxypeptidase VanXYC (EC 3.4.13.22) (EC 3.4.17.-) (D,D-dipeptidase/D,D-carboxypeptidase) (D-Ala-D-Ala dipeptidase/D-Ala-D-Ala carboxypeptidase VanXY-C) (Vancomycin C-type resistance protein VanXYC)