The promoter region of Myh6 drives expression of a constitutively active Ppp3ca cDNA in cardiomyocytes. This is a representative record representing Tg46, Tg22, Tg110, Tg106, Tg108, Tg41, Tg37, and Tg39 which vary in the number of copies of the transgene integrated but all have identical phenotypes.