(A) Deletion of Cul4a increases Grk2 protein in heart. The steady state levels of Grk2 protein were determined in five 10-week old littermate male mice by Western blotting.
(B) Male Cul4a−/− mice develop heart hypertrophy. 10-week-old littermate male mice were dissected and their hearts were analyzed by H&E staining.
(C) Male Cul4a−/− mice develop heart hypertrophy. The heart weights (HW) of 67 age-matched male mice of different genotypes were determined and normalized to the body weight (BW). The statistical significances of heart weight differences between different genotypes were determined by p value calculation as indicated.
(D, E) Cul4a−/−, but not Cul4a−/−;Grk2+/− male mice develop heart hypertrophy. The heart weights (HW) of age-matched 40 male mice of different genotypes were determined and normalized to the body weight (BW). The statistical significances of heart weight differences between different genotypes were determined by p value calculation as indicated.