Related Experiment Video
Updated: Jul 1, 2026

Detection of Mitophagy in Caenorhabditis elegans and Mammalian Cells Using Organelle-Specific Dyes
Published on: May 19, 2023
BNIP3/NIX-dependent mitophagy: molecular mechanisms and physiological roles
Tamara Ginevskaia1, Takayuki Mito1, Keiichi Inoue1
1Department of Cellular Physiology, Graduate School of Medical Sciences, Kyushu University.
None:
Mitochondria are essential for cellular metabolism and homeostasis, and their quality and quantity must therefore be tightly controlled. Mitophagy, a selective form of autophagy targeting mitochondria, contributes to this control by eliminating damaged or superfluous mitochondria. Among the known mitophagy pathways, BNIP3/NIX-dependent mitophagy has emerged as a key mechanism, particularly under hypoxic and metabolic stress. Recent studies have provided important insights into how BNIP3 and NIX are transcriptionally induced, post-translationally regulated, and functionally coupled to the core autophagy machinery. These studies have also clarified their roles in isolation membrane tethering, membrane elongation, and mitophagosome formation. Beyond its molecular basis, accumulating evidence indicates that BNIP3/NIX-dependent mitophagy contributes to mitochondrial homeostasis, redox balance, and cellular stress adaptation. This review summarizes recent progress in understanding the molecular mechanisms and physiological significance of BNIP3/NIX-dependent mitophagy.
Related Concept Videos
Translocation of Proteins into the Mitochondria
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...
Mitochondrial Protein Sorting
Most of these mitochondrial proteins are encoded by the nucleus and imported to the mitochondria as unfolded or loosely folded precursors. Mitochondrial precursors...
Delivery Pathways to the Lysosome
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Autophagy
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
Electron Transport Chain: Complex I and II
ROS generation is regulated and maintained at moderate levels necessary...
The Inner Mitochondrial Membrane

