| Association of insulin like growth factor 1 receptor with EHD 1 and SNAP 29 . ^^^ We show here that besides AP 2 and clathrin , two other proteins participate in the endocytic process of the insulin like growth factor receptor ( IGF 1R ) ; they are EHD 1 , an Eps 15 homology ( EH ) domain containing protein 1 , and SNAP 29 , a synaptosomal associated protein . ^^^ EHD 1 and SNAP 29 form complexes with alpha adaptin of AP 2 and co localize in endocytic vesicles , indicating a role for them in endocytosis . ^^^ EHD 1 and SNAP 29 interact directly with each other and are present in complexes with IGF 1R . ^^^ |