TCDB is operated by the Saier Lab Bioinformatics Group

9.B.258.  The Uncharacterized Bacterial Protein-8 (UBP8) Family 

These proteins usually are less than 200 aas in length and have 5 TMSs.  They are found in Actinobacteria with high frequency but also in other bacteria. They have a similar topology (a 2 + 3 TMS arrangement) to the Vauolar Iron Transporter proteins of the VIT family (TC# 2.A.89), but sequence similarity has not been demonstrated.