Myosins are actin-based motor molecules with ATPase activity. Unconventional myosins serve in intracellular movements. Regulates Rho by stimulating it's GTPase activity in neurons. Required for the regulation of neurite branching and motor neuron axon guidance (By similarity). Localized in the cytoplasm of cell bodies, dendrites and axons with occasional hints of an enrichment near the plasma membrane. Localized at the neuromuscular junction (By similarity). Found to be expressed in testis and placenta and at lower levels in all the examined tissues with the exception of liver (PubMed:10409426). Isoform 5: Found in leukocytes but not in brain, retina or testis (PubMed:10409426). Phosphorylated by ALPK1 following monosodium urate monohydrate (MSU)-induced inflammation. The disease may be caused by variants affecting the gene represented in this entry. Lacks the ATP-binding domain which suggests that it cannot interact with actin. Belongs to the TRAFAC class myosin-kinesin ATPase superfamily. Myosin family. Represents an unconventional myosin. This protein should not be confused with the conventional myosin-9 (MYH9). Truncated N-terminus. Truncated N-terminus.