D-galactonate <=> 2-dehydro-3-deoxy-D-galactonate + H2O
d-galactonate <=> 2-dehydro-3-deoxy-d-galactonate + h2o
D-galactonate <=> 2-dehydro-3-deoxy-D-galactonate + H2O
d-galactonate <=> 2-dehydro-3-deoxy-d-galactonate + h2o