Predicted to enable myosin heavy chain binding activity. Predicted to be involved in platelet aggregation. Predicted to be located in Z disc and stress fiber. Predicted to be part of myosin II complex. Human ortholog(s) of this gene implicated in familial hypertrophic cardiomyopathy. Orthologous to human MYL9 (myosin light chain 9). [provided by Alliance of Genome Resources, Apr 2022]