ENZYMES:: PART 3

Fischer’s lock and key model

-          Enzyme substrate union depends upon the reciprocal fit          
       between the structure of enzyme and the structure of the
       substrate.

                                           

-          The substrate and active site of enzyme fit each other more or
        less like a lock and key.

-          The enzyme substrate union results in the release of energy.

-          The energy released helps the substrate molecule to attain
        activation energy.

                                   

-          In the activated state certain bonds of the enzyme-substrate
        complex become susceptible to cleavage.

-          This cleavage produces product and the enzyme remains
        unchanged.