TCDB is operated by the Saier Lab Bioinformatics Group

9.B.190 The Putative Beta Barrel Porin-8 (BBP8) Family 

The BBP8 family consist of probable porin proteins with an N-terminal leader α-TMS followed by 20 - 28 putative transmembrane β-strands.  They were obtained as distant homologues of the putative porins in families 5.B.8 and 1.B.80, but homology was not estabilshed.