Transferases are a class of enzymes that facilitate the transfer of specific functional groups from one molecule to another. These functional groups can include methyl, phosphate, or amino groups, among others. By catalyzing these reactions, transferases play a crucial role in various biochemical processes, including metabolism and signal transduction. One common example of a transferase is kinase, which transfers phosphate groups to molecules like proteins or nucleotides. This process is essential for regulating cellular activities and energy transfer. Overall, transferases are vital for maintaining the proper functioning of biological systems.