9.B.55 The 4 TMS DUF307/YccF (DUF307) Family
This family includes the E. coli YccF 4 TMS protein of unknown function. This domain contains two 2 TMSs repeated in tandem. This 2 TMS domain is found in some calcium:cation antiporters of the CaCA family. These proteins have TC#s 2.A.19.7.1 &2.
The small 4 TMS protein, YccF of 148 aas and 4 putative TMSs.
YccF of E. coli
Uncharacterized DUF307 homologue of 131 aas and 4 TMS in a tandem 2 TMS repeated arrangement. Homologous to a 2 TMS N-terminal sequence in the CaCA family protein with TC# 2.A.19.7.1 & 2.
UP of Mycobacterium phlei (Mycobacterium smegmatis)
Uncharacterized protein of 193 aas and 4 TMSs.
UP of Chlorella variabilis (Green alga)
Uncharacterized protein of 145 aas with two adjacent 2 TMS DUF307 domains.
UP of Perkinsus marinus
Uncharacterized protein of 313 aas with a C-terminal DUF375 domain of 4 putative TMSs, and a hydrophilic N-terminal domain with a long QPAG rich region of unknown function.
UP of Trichoplax adhaerens (Trichoplax reptans)