RAB27A and melanoma: This revealed a large set of Rab27a interacting proteins which were filtered based on the following criteria; i) presence in both HTF-Rab27aWT and HTF-Rab27aSF1/F4 TAPs and absence from the negative non-transfected melan-ash2 control TAP, ii) presence in previous proteomic studies of melanosomes from melanoma and retinal pigment epithelial cells [41]–[43].