(R)-lactate + glutathione + H(+) => (R)-S-lactoylglutathione + H2O
(r)-lactate + glutathione + h(+) => (r)-s-lactoylglutathione + h2o
(R)-lactate + glutathione + H(+) => (R)-S-lactoylglutathione + H2O
(r)-lactate + glutathione + h(+) => (r)-s-lactoylglutathione + h2o