Tags: Protein.
MYH7 is a gene encoding a myosin heavy chain beta (MHC-β) isoform (slow twitch) expressed primarily in the heart but also in skeletal muscles (type I fibers).Changes in the relative abundance of MHC-β and MHC-α (MYH6 the fast isoform of cardiac myosin heavy chain) correlate with the contractile velocity of cardiac muscle. In early fetal development MHC-β is predominately expressed in the ventricles while MHC-α is predominantly expressed in the atria.