MYBPC3 Antibody – Rabbit Polyclonal

MYBPC3 encodes the cardiac isoform of myosin-binding protein C. Myosin-binding protein C is a myosin-associated protein found in the cross-bridge-bearing zone (C region) of A bands in striated muscle. MYBPC3, the cardiac isoform, is expressed exclussively in heart muscle. Regulatory phosphorylation of the cardiac isoform in vivo by cAMP-dependent protein kinase (PKA) upon adrenergic stimulation may be linked to modulation of cardiac contraction. Mutations in MYBPC3 are one cause of familial hypertrophic cardiomyopathy. [provided by RefSeq, Jul 2008]

MYBPC3: Thick filament-associated protein located in the crossbridge region of vertebrate striated muscle a bands. In vitro it binds MHC, F-actin and native thin filaments, and modifies the activity of actin-activated myosin ATPase. It may modulate muscle contraction or may play a more structural role. Belongs to the immunoglobulin superfamily. MyBP family.

Protein type: Myosin-binding

Chromosomal Location of Human Ortholog: 11p11.2

Cellular Component: A band; cytosol; sarcomere; striated muscle thick filament

Molecular Function: ATPase activator activity; identical protein binding; myosin binding; myosin heavy chain binding; protein binding; structural constituent of muscle

Biological Process: cardiac muscle contraction; heart morphogenesis; muscle filament sliding; positive regulation of ATPase activity; regulation of muscle filament sliding; regulation of striated muscle contraction; ventricular cardiac muscle morphogenesis

Disease: Cardiomyopathy, Familial Hypertrophic, 4; Left Ventricular Noncompaction 10