Programmed cell death, which is termed as apoptosis, is essential for normal development and maintenance of tissue homeostasis in multicellular organisms. Aberrant regulation of this pathway is linked to multiple human diseases, including cancer, autoimmunity, neurodegenerative disorders and diabetes. Apoptosis is pursued by two pathways; extrinsic and intrinsic pathway. The intrinsic pathway of apoptosis mainly relies on mitochondria where Bcl-2 family proteins serve as the master regulators. Mitochondria mainly execute their function through mitochondrial outer membrane permeabilization...