The Omp85 protein superfamily contains bacterial outer membrane proteins, which can function as protein translocases or as membrane protein assembly factors [1]. The family includes the membrane bound beta barrel of proteins such as BamA and TamA from E. coli.

1: A comprehensive analysis of the Omp85/TpsB protein superfamily structural diversity, taxonomic occurrence, and evolution. Heinz E, Lithgow T; Front Microbiol. 2014;5:370. PMID:25101071