FERM domain-containing protein 4B (FRMD4B)

Member of GRP1 signaling complexes which are acutely recruited to plasma membrane ruffles in response to insulin receptor signaling. May function as a scaffolding protein that modulates epithelial cell polarity by connecting ARF6 activation with the PAR3 complicated.

Plays a redundant role with FRMD4A in epithelial polarization. .