a carboxylate + L-lysine => an N(6)-acyl-L-lysine + H2O
a carboxylate + l-lysine => an n(6)-acyl-l-lysine + h2o
a carboxylate + L-lysine => an N(6)-acyl-L-lysine + H2O
a carboxylate + l-lysine => an n(6)-acyl-l-lysine + h2o