Flavoprotein dehydrogenases are enzymes that play a crucial role in cellular metabolism by facilitating the transfer of electrons. They contain a flavin cofactor, typically flavin adenine dinucleotide (FAD) or flavin mononucleotide (FMN), which helps in the oxidation-reduction reactions. These enzymes are involved in various biochemical pathways, including the metabolism of carbohydrates, lipids, and amino acids. These dehydrogenases are found in many organisms, from bacteria to humans, and are essential for energy production. They help convert substrates into products while reducing NAD+ or NADP+ to NADH or NADPH, respectively. This process is vital for maintaining cellular energy balance and supporting various physiological functions.