TCDB is operated by the Saier Lab Bioinformatics Group

9.B.259.   The Uncharacterized Archaeal/Bacterial Protein-1 (UABP1) Family 

The UBP9 family consists mostly of proteins of about 200 - 250 aas with 6 TMSs, but several have more than 6 TMSs, and a few have less.  They derive from uncultured and cultured bacteria as well as archaea.