9.B.102.5.5
4 TMS protein of 142 aas, PmpB.  It has N- and C-termini predicted to be on the inside.  The opposite orientation is observed for PmpA (TC# 9.B.102.5.2) which in encoded by a gene adjacent to the pmpB gene.  These two proteins may comprise a single two subunit transporter.  These two genes are adjacent to pmpC which encodes a member of the TSUP family of sulfur compound uptake permeases (Gristwood et al., 2011, Shlykov et al., 2012).