SH3-containing GRB2-like protein 3-interacting protein 1 (Sgip1)

May function in clathrin-mediated endocytosis. Has a membrane binding/tubulating activity and the ability to recruit proteins essential to the formation of functional clathrin-coated pits.

Has a preference for membranes enriched in phosphatidylserine and phosphoinositides and is required for the endocytosis of the transferrin receptor. May also bind tubulin.