9.B.244.  The Uncharacterized Bacterial Protein-3 (UBP3) Family 

This family includes proteins from a variety of prokaryotes, both cultured and unculturable bacteria.  They are of ~ 210 - 280 aas with 6 TMSs.  In BLAST searches, they bring up various transporters of known function such as ABC transporters and inorganic phosphate carriers with poor scores.  Glycosyl transferases do not come up.  Therefore this family may be an uncharacterized family of transport proteins.


TC#NameOrganismal TypeExample

Uncharacterized protein of 232 aas and 6 TMSs.

UP of Candidatus Beckwithbacteria bacterium


Uncharacterized protein of 264 aas and 6 TMSs.

UP of Lactobacillus crispatus


Uncharacterized protein of 256 aas and 6 TMSs.

UP of Ornatilinea apprima


Uncharacterized protein of 268 aas and 6 TMSs.

UP of Thermogemmatispora carboxidivorans


Uncharacterized protein of 273 aas and 6 TMSs.

UP of Clostridium neonatale


Uncharacterized protein of 215 aas and 5 or 6 TMSs.

UP of Pseudoramibacter alactolyticus


Uncharacterized protein of 260 aas and 6 TMSs.

UP of Gemmatimonadetes bacterium


Uncharacterized protein of 181 aas and 5 TMSs in a 1 + 2 + 2 arrangement.

UP of Flexibacter sp. ATCC35208