Enzyme Kinetics

Enzyme Kinetics describes the quantitative study of enzyme-catalysed reaction rates and the factors influencing catalytic velocity, providing fundamental insights into enzyme mechanisms, substrate affinities, and inhibitor effects essential for drug development. This discipline characterises relationships between substrate concentration and reaction velocity, typically following Michaelis-Menten kinetics defined by maximum velocity and the Michaelis constant.

The pharmaceutical industry applies enzyme kinetics extensively throughout discovery, development, and manufacturing. Drug discovery employs kinetic analysis characterising target enzyme mechanisms, measuring inhibitor potency and selectivity, and understanding inhibition modes including competitive, non-competitive, or uncompetitive mechanisms. Metabolic stability assessment uses enzyme kinetics characterising drug metabolism rates by cytochrome P450 and other enzymes, predicting clearance. Biocatalysis development optimises enzyme performance through kinetic characterisation identifying optimal conditions and parameters maximising productivity. As therapeutic targets diversify and biocatalysis gains prominence in sustainable manufacturing, enzyme kinetics remains foundational science informing rational drug design.