The Lock And Key Model Of The Lock And Key Model

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Recommended: Role of enzymes in medicine

Enzymes are essential biological catalysts in the human body that biochemical reaction. Catalysts work by lowering the activation energy, the minimum energy required for a reaction to occur, which increases the rate of the reaction (Burdge, 2014). Enzymes catalyze reactions by applying pressure onto the bonds of the substrate which lowers the activation energy and breaks these bonds to form products. Even though some enzymes have been found to be non-proteins, most of them are globular proteins which possess an active site where the substrate attaches itself (Raven, 114). The two models that describe the manner in which substrates attach to enzymes are the lock-and-key model and the induced fit model. The lock-and-key model is used to explain an enzyme that fits to only one type of substrate. It is like a lock and key in the sense that only one lock can fit into a key, therefore, only one substrate can fit into the active site of an enzyme that follows this model. On the other hand, an enzyme that follows the induced fit model slightly changes its shape in order for the substrate to...

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