9.B.243. The Uncharacterized Protein from Unculturable Bacteria-4 (UPUB4) Family This family is very small with only a few proteins that derive only from uncultured bacteria. The protein members are variable in size with different numbers of TMSs.
Examples:
TC#	Name	Organismal Type	Example
9.B.243.1.1	Uncharacterized protein of 1239 aas and 7 - 11 TMSs.		UP of Candidatus Beckwithbacteria bacterium

9.B.243.1.2	Uncharacterized protein of 655 aas and 4 or 5 TMSs with a small hydrophilic domain N-terminal and a large hydrophilic domain C-terminal.		UP of Parcubacteria group bacterium