9.B.102.5.3
Uncharacterized protein of 378  aas and 9 TMSs.  The N-terminal 4 TMSs match PmpA (TC# 9.B.102.5.2) while the C-terminal 4 TMSs match PmpB (TC# 9.B.102.5.5) as top hits.  Only the central TMS does not show homology.  Therefore, the N-terminus of this protein may have its N-terminus inside and its C-terminus outside.  Further, this provides evidence that PmpA and PmpB are two parts of a single two subunit transporter.  Prodigiosin, which is hypothesized to export prodigiosin in Serratia species, could be the function of this protein since Galdieria species are sensitive to prodigiosin.  Thus it could be a prodigiosin efflux pump (Lee et al. 2017).