... TRI and the CSQ-binding elementJUN, show decreased protein–protein interactions duringfiber type shifting and the ageing process. Reduced proteincoupling between the major elements regulating ... °C in the presence of a protease inhibitor cocktail(0.2 mMPefabloc, 1. 4 lMpepstatin A, 0.3 lME-64, 1 lMleupeptin, 1 mMEDTA, and 0.5 lMsoybean trypsininhibitor) [19 ]. Using bovine ... latterfinding agrees with the stimulation-induced reduction in thefast isoforms of CSQ, TRI and the RyR1 (Fig. 3E,G,H).The disproportionate weakening of immuno labeling of the RyR1 band in stimulated...