The ATP-ADP carrier, also known as the adenine nucleotide translocase, is a protein that is responsible for the transport of adenosine triphosphate (ATP) and adenosine diphosphate (ADP) across the inner mitochondrial membrane. This carrier plays a critical role in cellular energy metabolism by facilitating the exchange of ATP and ADP between the mitochondria and the cytoplasm. Research in this area focuses on understanding the molecular mechanisms and regulation of the ATP-ADP carrier, as well as its role in various physiological processes such as oxidative phosphorylation, cell signaling, and apoptosis. Studies also investigate the impact of mutations in the ATP-ADP carrier gene on mitochondrial function and disease development, as disruptions in ATP/ADP transport have been implicated in various disorders such as diabetes, neurodegenerative diseases, and cancer. Overall, research on the ATP-ADP carrier aims to uncover new insights into mitochondrial function and energy metabolism, with potential implications for the development of novel therapeutic strategies for mitochondrial disorders.