a carboxylate + L-aspartate => an N-acyl-L-aspartate + H2O
a carboxylate + l-aspartate => an n-acyl-l-aspartate + h2o
a carboxylate + L-aspartate => an N-acyl-L-aspartate + H2O
a carboxylate + l-aspartate => an n-acyl-l-aspartate + h2o