The Michaelis-Menten constant, denoted as \(K_m\), is a crucial parameter in the field of enzyme kinetics and catalysis. It represents the substrate concentration at which the reaction rate is at half its maximum velocity. Essentially, \(K_m\) provides insights into the affinity between an enzyme and its substrate. A lower \(K_m\) value indicates a higher affinity, meaning the enzyme can achieve half-maximal catalytic activity at a lower substrate concentration.