Predicted to enable actin monomer binding activity and cytoskeletal motor activity. Predicted to be involved in several processes, including cardiac muscle contraction; regulation of the force of heart contraction; and ventricular cardiac muscle tissue morphogenesis. Predicted to be located in A band and I band. Predicted to be part of myosin complex. Is expressed in several structures, including diaphragm; eye; heart; limb segment; and skeletal musculature. Human ortholog(s) of this gene implicated in hypertrophic cardiomyopathy 8. Orthologous to human MYL3 (myosin light chain 3). [provided by Alliance of Genome Resources, Apr 2022]