May play a role in axon growth and regeneration. May be involved in epidermal cell adhesion and epidermal structure and function (By similarity). Heterooligomer; Heterooligomerizes with ic complex of flotillins 1 and 2. In neuronal cells, associated with GPI-anchored cell-adhesion molecules. Palmitoylation may be required for the formation of higher order complexes and for neurite outgrowth in cultured neural stem cells. Belongs to the band 7/mec-2 family. Flotillin subfamily. Contaminating sequence. Sequence of unknown origin in the N-terminal part. Intron retention.