Enzyme classification is a systematic way to categorize enzymes based on their functions and the types of reactions they catalyze. The primary classification system divides enzymes into six main classes: oxidoreductases, transferases, hydrolases, lyases, isomerases, and ligases. Each class is further divided into subclasses and groups, allowing for a detailed understanding of enzyme activity. This classification helps scientists identify and study enzymes more effectively. By knowing the specific class and function of an enzyme, researchers can predict its role in biological processes, such as metabolism and cellular signaling, and explore potential applications in medicine and biotechnology.