The function of ENSG00000198399 (ITSN2, intersectin 2) is as follows. Adapter protein that may provide indirect link between the endocytic membrane traffic and the actin assembly machinery. May regulate the formation of clathrin-coated vesicles (CCPs). Seems to be involved in CCPs maturation including invagination or budding. Involved in endocytosis of integrin beta-1 (ITGB1) and transferrin receptor (TFR). Plays a role in dendrite formation by melanocytes (PubMed:23999003). {ECO:0000269|PubMed:19458185, ECO:0000269|PubMed:22648170, ECO:0000269|PubMed:23999003}.