This family of short membrane proteins are related to the protein Maff2. Maff2 lies just outside the direct repeats of a tetracycline resistance transposable element. This protein may contain transmembrane helices.

1: Comparative analysis of sequences flanking tet(W) resistance genes in multiple species of gut bacteria. Kazimierczak KA, Flint HJ, Scott KP; Antimicrob Agents Chemother. 2006;50:2632-2639. PMID:16870752