Tetanus is also commonly called lockjaw, because the infection primarily causes muscle contractions in the jaw and neck, but can eventually spread to other parts of the body. Without treatment, tetanus infection can be life-threatening.
Competitive inhibitors. The inhibitor (I) competes with the substrate (S) for the enzyme active site (also known as the S-binding site). Binding of either of these molecules in the active site is a mutually exclusive event. The substrate and inhibitor share a high degree of structural similarity.
Enzymes work by weakening substrate bonds which lowers activation energy (amount of energy necessary for the reaction to occur). The enzyme then releases the product and is ready to begin the process again. One enzyme molecule can act over and over, transforming many substrate molecules.