label: keto-L-sorbose(out) + N(pros)-phospho-L-histidyl-[protein] = L-sorbose 1-phosphate(in) + L-histidyl-[protein]
label_lc: keto-l-sorbose(out) + n(pros)-phospho-l-histidyl-[protein] = l-sorbose 1-phosphate(in) + l-histidyl-[protein]