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  • Title: Immunochemical analysis of porcine cardiac C-protein.
    Author: Yamamoto K.
    Journal: Int J Biochem; 1987; 19(7):589-94. PubMed ID: 3114018.
    Abstract:
    C-protein has been isolated from pig heart and its immunochemical properties studied. It is extracted with myosin, and separated from the myosin on a DEAE-Sephadex column. The amount of C-protein recovered from crude myosin is approx. 3.5%. The molecular weight of C-protein is 150,000. Anti-C-protein serum reacts with crude myosin and purified C-protein but not with purified myosin in immunodiffusion plates. Cardiac C-protein does not react with anti-skeletal white muscle C-protein serum. Immunoblotting experiments show that anti-cardiac C-protein serum reacts with a Mr = 150,000 component in myofibrils or crude myosin. C-protein is located in the A-band, except the M-line region, of the myofibrils. These results indicate that C-protein is an intrinsic component of the thick filaments in pig heart myofibrils.
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