Figure 12: Myosin head structure showing approximate regions of attachment of antibodies 1, 2 and 3, indicated by numbers 1, 2 and 3 and 3’, respectively. The catalytic domain (CAD) consists of 25k-Da (green), 50-kDa (red), and part of 20-kDa (dark blue) fragments of myosin heavy chain, while the lever armdomain (LD) consists of the rest of 20-kDa fragment and essential (ELC, light blue) and regulatory (RLC, magenta) light chains. CAD and LD are connected via converter domain (COD). Location of peptides around Lys 83 in COD and that of two peptides (Met58~Ala70 and Leu106~Phe120) in LD are colored yellow [26].