9.B.397. The Uncharacterized Prokaryotic Membrane Protein-3 (UPMP3) Family The proteins of this family are small, ~150 aas with 4 TMSs in a 1 + 1 + 2 TMS arrangement. Most members appear to be derived from bacteria.
Examples:
TC#	Name	Organismal Type	Example
9.B.397.1.1	Uncharacterized protein of 158 aas and 4 TMSs in a 1 + 1 + 2 TMS arrangement.		UP of Methylobacter marinus

9.B.397.1.2	Uncharacterized protein of 149 aas and 4 TMSs		UP of a proteobacterium

9.B.397.1.3	Uncharacterized protein of 156 aas and 4 TMSs		UP of Candidatus Rokubacteria bacterium (soil metagenome)

9.B.397.1.5	Uncharacterized protein of 160 aas and 3 TMSs		UP of candidate division Zixibacteria bacterium (subsurface metagenome)

9.B.397.1.6	Uncharacterized protein of 163 aas and 4 TMSs		UP of Persicimonas caeni