 PTS Lactose-N,N'-Diacetylchitobiose Family

The PTS Lactose-N,N’-Diacetylchitobiose (Lac) Family (TC# 4.A.3) includes several sequenced lactose porters of Gram-positive bacteria, as well as the "Escherichia coli" and "Borrelia burgdorferi" N,N'-diacetylchitobiose (Chb) porters.It is part of the PTS-GFL superfamily.