<prompt> Which protein is defective in dialated cardiomyopathy?MyosinTroponinTropomysoinDystrophin  <response>: Ans. is d i.e., Dystrophin o Dialated cardiomyopathy occus due to defective cytoskeleton proteins. Most important protein inovolved is dystrophin. Other proteins affected are1 Desmin2 MLP Protein3 ab crystalline proteins 