BECN1 and myocardial infarction: In contrast, mitochondrial proteins such as Tom20 and Fundc1 in Beclin1+/− mouse hearts showed no difference with those in wild‐type hearts at basal condition and decreased similarly both in Beclin1+/− and wild‐type mouse hearts after acute MI (Figure 2D), indicating that mitophagy activity is not significantly changed in Beclin1+/− mouse hearts.