9.B.222. The Small Conserved Uncharacterized Protein with 4 TMS (UP4TM) Family Nothing is known about these proteins, but there seem to be a fairly large number of them in bacteria and archaea. Most are from metagenomic sequencing efforts, and seem not to occur in the better known bacteria.
Examples:
TC#	Name	Organismal Type	Example
9.B.222.1.1	Uncharacterized protein of 147 aas and 3 or 4 TMSs.		UP of Accumulibacter phosphatis

9.B.222.1.2	Uncharacterized protein of 172 aas and 4 TMSs.		UP of Nitrospira defluvii

9.B.222.1.3	Uncharacterized protein of 174 aas and 5 TMSs.		UP of Nitrospira defluvii

9.B.222.1.4	Uncharacterized protein of 163 ass and 4 TMSs		UP of candidate division Zixibacteria bacterium

9.B.222.1.5	Uncharacterized protein of 176 aas and 4 TMSs		UP of Candidatus Wolfebacteria bacterium