N-acetyl-D-galactosaminate + H(+) => N-acetyl-D-galactosamino-1,5-lactone + H2O
n-acetyl-d-galactosaminate + h(+) => n-acetyl-d-galactosamino-1,5-lactone + h2o
N-acetyl-D-galactosaminate + H(+) => N-acetyl-D-galactosamino-1,5-lactone + H2O
n-acetyl-d-galactosaminate + h(+) => n-acetyl-d-galactosamino-1,5-lactone + h2o