Polyphosphate Polymerase/YidH (PoPo) Superfamily

Full length polyphosphate polymerases (TC# 4.E.1) have a C-terminal 3 TMS domain that is in the ubiquitous DUF202 domain/E. coli YidH protein Family (TC# 9.B.51). These small proteins, all with 3 TMSs, are found in bacteria, archaea and eukaryotes. These proteins may be distantly related to phosphate transporters of TC family 2.A.94.