FUNDC1 and myocardial infarction: Mitochondrial LC3 II protein level showed no difference between Beclin1+/− and wild‐type mice, but was largely suppressed in Fundc1 KO mice compared with wild‐type mice at both sham level and after acute MI (Figure 2E), suggesting that Fundc1 KO suppresses mitophagy while Beclin1+/− hardly contributes to mitophagy.