The function of MYO5A (myosin VA, ENSG00000197535) is as follows. Processive actin-based motor that can move in large steps approximating the 36-nm pseudo-repeat of the actin filament. Can hydrolyze ATP in the presence of actin, which is essential for its function as a motor protein (PubMed:10448864). Involved in melanosome transport. Also mediates the transport of vesicles to the plasma membrane (By similarity). May also be required for some polarization process involved in dendrite formation (By similarity). {ECO:0000250|UniProtKB:Q99104, ECO:0000250|UniProtKB:Q9QYF3, ECO:0000269|PubMed:10448864}.