FEATURES

DESCRIPTION

Also known as FCSD2_HUMAN, FCHSD2, KIAA0769, SH3MD3. Adapter protein that plays a role in endocytosis via clathrin-coated pits. Contributes to the internalization of cell surface receptors, such as integrin ITGB1 and transferrin receptor (PubMed:29887380). Promotes endocytosis of EGFR in cancer cells, and thereby contributes to the down-regulation of EGFR signaling (PubMed:30249660). Recruited to clathrin-coated pits during a mid-to-late stage of assembly, where it is required for normal progress from U-shaped intermediate stage pits to terminal, omega-shaped pits (PubMed:29887380). Binds to membranes enriched in phosphatidylinositol 3, 4-bisphosphate or phosphatidylinositol 3, 4, 5-trisphosphate (PubMed:29887380). When bound to membranes, promotes actin polymerization via its interaction with WAS and/or WASL which leads to the activation of the Arp2/3 complex. Does not promote actin polymerisation in the absence of membranes (PubMed:29887380). Homodimer (PubMed:29887380). Interacts (via SH3 domain 2) with ITSN1 (via SH3 domain 4). Recruited to clathrin-coated pits during a mid-to-late stage of assembly via interaction with ITSN1. Interacts (via SH3 domain 1) with WASL (PubMed:29887380). Interacts with WAS (By similarity). Interacts with CASK and MAGI1. CASK inhibits interaction with MAGI1 (PubMed:14627983).

EXTERNAL LINKS

FCHSD2

F-BAR and double SH3 domains protein 2

FCHSD2

Molecular Synopsis