PQQ is a small molecule that possesses a quinone structure, which is integral to its functionality. Found in various foods such as fermented soybeans, green peppers, and spinach, PQQ is not traditionally classified as a vitamin, but it exhibits vitamin-like properties due to its critical involvement in metabolic processes. One of the most significant features of PQQ is its ability to facilitate cellular energy production through mitochondrial biogenesis, enhancing the synthesis of mitochondria within cells. This action is particularly important as mitochondria are known as the powerhouses of the cell, responsible for producing adenosine triphosphate (ATP), the energy currency vital for cell function.
