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  • Title: Many isoforms of fast muscle troponin T from chicken legs.
    Author: Imai H, Hirai S, Hirono H, Hirabayashi T.
    Journal: J Biochem; 1986 Mar; 99(3):923-30. PubMed ID: 3711049.
    Abstract:
    Troponin T from fast muscle of chicken legs was found to be composed of about 40 kinds of isoforms by two-dimensional polyacrylamide gel electrophoresis in conjunction with immunoblotting tests with an antiserum to chicken breast muscle troponin T. Almost all of the isoforms were found in the myofibril preparation and troponin preparation from the leg muscle, and they showed complex-forming ability with troponin I and troponin C. These isoforms existed in most of the fast muscle except pectoralis and posterior latissimus dorsi muscles, and they changed in composition during development. The breast muscle troponin T also showed different types of isoforms in the period soon after hatching. Since proteolysis was completely inhibited during two-dimensional gel electrophoresis and since the many isoforms were observed consistently in various muscles of chicken leg, they are most probably products of mRNAs generated by differential gene splicing.
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