. "Catalysis of the reaction: 2 D-alanine + ATP = D-alanyl-D-alanine + ADP + 2 H(+) + phosphate." . . "D-alanine-D-alanine ligase activity" . "alanine:alanine ligase (ADP-forming) activity" . "alanylalanine synthetase activity" . "D-Ala-D-Ala synthetase activity" . "D-alanine:D-alanine ligase (ADP-forming)" . "D-alanyl-D-alanine synthetase activity" . "D-alanylalanine synthetase activity" . . .