Nucleoside diphosphate mutase is an enzyme that plays a crucial role in nucleotide metabolism. It catalyzes the conversion of nucleoside diphosphates (NDPs) into different forms, facilitating the transfer of phosphate groups. This process is essential for maintaining the balance of nucleotides within cells, which are vital for energy transfer and the synthesis of nucleic acids. This enzyme is particularly important in the context of cellular energy management, as it helps regulate the levels of adenosine diphosphate (ADP) and guanosine diphosphate (GDP). By ensuring a proper supply of nucleotides, nucleoside diphosphate mutase supports various cellular functions, including DNA and RNA synthesis.