<prompt> Mutation in protein associated with restrictive cardiomyopathy?Myosin regulatory proteinsMyosin binding protein-CTroponin ITropomyosin  <response>: Ans. is c i.e. Troponin I RCM-associated mutations have been reported in four genes that encode key sarcomeric proteinsmyofilaments1. MYH7 gene - b-Myosin heavy chain2. TNNI3 gene - Cardiac troponin I type 33. TNNT2 gene- Cardiac troponin T type 24. ACTC gene - a- actin Mutations in the TNNI3 gene MYH7 gene are the major causes of this condition. 