describe the active site of an enzyme and explain why an enz

describe the active site of an enzyme and explain why an enzyme is highly specific for a particular substrate

Solution

An active site of an enzyme is the region where substrate binds and undergo a chemical reaction through which the enzyme becomes capable of producing a product. The reason why enzyme is highly specific for a particular substrate can be explained by the Lock and Key model postulated by Emil Fischer in 1894. In this model they have described the enzyme as lock while the key as the substrate. As only the correct sized key fits into the model same way substrate binds with the enzyme. This specificity of enzyme substrate depends on the amino acidresidues being present on the binding site which renders strong bonding conditions with the substrate.