(R)-lactate + D-alanine + ATP => D-alanyl-(R)-lactate + ADP + phosphate
(r)-lactate + d-alanine + atp => d-alanyl-(r)-lactate + adp + phosphate
(R)-lactate + D-alanine + ATP => D-alanyl-(R)-lactate + ADP + phosphate
(r)-lactate + d-alanine + atp => d-alanyl-(r)-lactate + adp + phosphate