Actin-based motor molecule with ATPase activity that localizes to the mitochondrion outer membrane (PubMed:24825904). Motor protein that moves towards the plus-end of actin filaments (PubMed:24825904). Required for mitochondrial inheritance during mitosis (By similarity). May be involved in mitochondrial transport or positioning (By similarity). Myosin is a hexamer of 2 heavy chains and 4 light chains: interacts with myosin light chains MYL9 and MYL12B. The MyMOMA (MYO19-specific mitochondrial outer membrane-association) region mediates association with the mitochondrion outer membrane via electrostatic interaction. Belongs to the TRAFAC class myosin-kinesin ATPase superfamily. Myosin family.