The Catalytic Effect And Specificity Of Enzymes Essay
1.Introductions to enzymes
Enzymes are proteins that can react with their specific substrates to achieve an highly effective catalyst reaction. .Almost all cellular activities of enzymes involved in the process are required to improve efficiency. Similar to other non-biological catalysts，enzymes provides another reaction route requires lower activation energy (Ea) to increase the number of particles that have a kinetic energy of not less than the activation energy, thus speeding The reaction rate. Most of the reaction rate can be improved hundreds of times by enzyme catalyst. Enzyme as a catalyst itself is not consumed in the reaction process and does not affect the chemical equilibrium in a reaction. Enzyme catalysis (faster reaction rates), also inhibit (slow down the reaction rate). Different from other non-biological catalyst, enzyme having a high degree of specificity, only catalyze specific reaction or produce a particular configuration.
Although enzymes are proteins mostly , a small number of molecules having biological catalytic function are not proteins, some RNA molecules and DNA molecules have the same catalytic function. In addition, some artificial enzymes also has similar catalytic activity. Therefore some people believed that enzymes should be defined as macromolecular biological catalysts.
Enzymes are widely applied in industry and people 's daily life.. For example, pharmaceutical companies use a…