L-cysteine + L-alanine => L-alanyl-L-cysteine + H2O
l-cysteine + l-alanine => l-alanyl-l-cysteine + h2o
L-cysteine + L-alanine => L-alanyl-L-cysteine + H2O
l-cysteine + l-alanine => l-alanyl-l-cysteine + h2o