label: N(pros)-phospho-L-histidyl-[protein] + D-galactose(out) <=> D-galactose 6-phosphate(in) + L-histidyl-[protein]
label_lc: n(pros)-phospho-l-histidyl-[protein] + d-galactose(out) <=> d-galactose 6-phosphate(in) + l-histidyl-[protein]