an S-substituted L-cysteinylglycine + L-glutamate => an S-substituted glutathione + H2O
an s-substituted l-cysteinylglycine + l-glutamate => an s-substituted glutathione + h2o
an S-substituted L-cysteinylglycine + L-glutamate => an S-substituted glutathione + H2O
an s-substituted l-cysteinylglycine + l-glutamate => an s-substituted glutathione + h2o