The function of Ensembl gene identifier ENSG00000066933 (MYO9A, myosin IXA) is as follows. Myosins are actin-based motor molecules with ATPase activity. Unconventional myosins serve in intracellular movements. Regulates Rho by stimulating its GTPase activity in neurons. Required for the regulation of neurite branching and motor neuron axon guidance (By similarity). {ECO:0000250|UniProtKB:Q8C170, ECO:0000250|UniProtKB:Q9Z1N3}.