Rat Formin-binding protein 1-like,FNBP1L ELI

Required to coordinate membrane tubulation with reorganization of the actin cytoskeleton during endocytosis.

May bind to lipids such as phosphatidylinositol 4,5-bisphosphate and phosphatidylserine and promote membrane invagination and the formation of tubules.

Also promotes CDC42-induced actin polymerization by activating the WASL-WASPIP complex, the predominant form of WASL/N-WASP in cells.

Actin polymerization may promote the fission of membrane tubules to form endocytic vesicles.

Essential for autophagy of intracellular bacterial pathogens (By similarity).

May negatively regulate neurite extension and axon branching in developing neurons.

{ECO:0000250, ECO:0000269|PubMed:16885158}.