citokrómc

Cytochrome c is a small heme protein found loosely associated with the inner membrane of the mitochondrion. It plays a crucial role in the electron transport chain, a vital part of cellular respiration. During this process, cytochrome c acts as a mobile electron carrier, transferring electrons between complexes III and IV of the respiratory chain. Its heme group contains an iron atom that can readily accept and donate electrons, facilitating the movement of energy through the mitochondria. Beyond its role in energy production, cytochrome c is also a key player in programmed cell death, also known as apoptosis. When released from the mitochondria into the cytoplasm, it triggers a cascade of events leading to cell dismantling. This dual functionality makes cytochrome c a critical component in both cellular metabolism and life-or-death decisions.