Enables myosin heavy chain binding activity. Acts upstream of or within several processes, including actin cytoskeleton organization; cardiac muscle contraction; and regulation of heart rate. Located in A band. Is expressed in several structures, including alimentary system; cardiovascular system; face; liver; and skeleton. Used to study hypertrophic cardiomyopathy 4. Human ortholog(s) of this gene implicated in familial hypertrophic cardiomyopathy; hypertrophic cardiomyopathy; and hypertrophic cardiomyopathy 4. Orthologous to human MYBPC3 (myosin binding protein C3). [provided by Alliance of Genome Resources, Apr 2022]