. "Involved with EC 6.3.2.7 or EC 6.3.2.13, EC 6.3.2.8, EC 6.3.2.9 and EC 6.3.2.10 in the synthesis of a cell-wall peptide." . . . "D-alanine--D-alanine ligase" . "D-alanylalanine synthetase" . "Alanine:alanine ligase (ADP-forming)" . "Alanylalanine synthetase" . "D-Ala-D-Ala synthetase" . "D-alanyl-D-alanine synthetase" . "ATP + 2 D-alanine = ADP + phosphate + D-alanyl-D-alanine." .