Mitophagy is a selective autophagy process that removes damaged mitochondria, playing a critical role in mitochondrial quality control. It is involved in the removal of mitochondria from developing erythrocytes and the elimination of sperm-derived mitochondria after fertilization. In yeast, the mitochondrial outer membrane protein ATG32 recruits the autophagic machinery to mitochondria for their selective removal. In mammals, the PINK1 and Parkin pathway responds to loss of mitochondrial membrane potential by targeting damaged mitochondria for clearance. PINK1 stabilizes on damaged mitochondria, recruits cytosolic Parkin, and promotes their degradation through Parkin-dependent ubiquitination of mitochondrial proteins. Recent studies have identified specific regulators of mitophagy, including Nix, which is required for the degradation of erythrocyte mitochondria. The PINK1/Parkin pathway is essential for mitophagy in neurons, where defects in this process have been implicated in neurodegenerative diseases. Mitophagy also serves as a mechanism to regulate organelle number in response to developmental or physiological cues. The PINK1/Parkin pathway is closely associated with mitochondrial dynamics and the regulation of mitochondrial movements. PINK1 and Parkin promote fission and the degradation of mitochondrial proteins, which is essential for the clearance of damaged mitochondria. The PINK1/Parkin pathway is also involved in the elimination of paternal mitochondria from fertilized oocytes, ensuring maternal inheritance of mitochondrial DNA. Mitophagy is important for maintaining mitochondrial homeostasis and preventing cellular damage. However, the exact mechanisms by which PINK1 and Parkin initiate mitophagy and the extent to which they activate mitophagy through ubiquitination of mitochondrial proteins remain unclear. The role of mitophagy in neurons is particularly important, as mitochondrial damage and dysregulation of mitophagy have been implicated in neurodegenerative diseases such as Parkinson's disease, Alzheimer's disease, and Huntington's disease. Further research is needed to fully understand the mechanisms of mitophagy and its role in cellular health and disease.Mitophagy is a selective autophagy process that removes damaged mitochondria, playing a critical role in mitochondrial quality control. It is involved in the removal of mitochondria from developing erythrocytes and the elimination of sperm-derived mitochondria after fertilization. In yeast, the mitochondrial outer membrane protein ATG32 recruits the autophagic machinery to mitochondria for their selective removal. In mammals, the PINK1 and Parkin pathway responds to loss of mitochondrial membrane potential by targeting damaged mitochondria for clearance. PINK1 stabilizes on damaged mitochondria, recruits cytosolic Parkin, and promotes their degradation through Parkin-dependent ubiquitination of mitochondrial proteins. Recent studies have identified specific regulators of mitophagy, including Nix, which is required for the degradation of erythrocyte mitochondria. The PINK1/Parkin pathway is essential for mitophagy in neurons, where defects in this process have been implicated in neurodegenerative diseases. Mitophagy also serves as a mechanism to regulate organelle number in response to developmental or physiological cues. The PINK1/Parkin pathway is closely associated with mitochondrial dynamics and the regulation of mitochondrial movements. PINK1 and Parkin promote fission and the degradation of mitochondrial proteins, which is essential for the clearance of damaged mitochondria. The PINK1/Parkin pathway is also involved in the elimination of paternal mitochondria from fertilized oocytes, ensuring maternal inheritance of mitochondrial DNA. Mitophagy is important for maintaining mitochondrial homeostasis and preventing cellular damage. However, the exact mechanisms by which PINK1 and Parkin initiate mitophagy and the extent to which they activate mitophagy through ubiquitination of mitochondrial proteins remain unclear. The role of mitophagy in neurons is particularly important, as mitochondrial damage and dysregulation of mitophagy have been implicated in neurodegenerative diseases such as Parkinson's disease, Alzheimer's disease, and Huntington's disease. Further research is needed to fully understand the mechanisms of mitophagy and its role in cellular health and disease.