2.4.1 Models of enzyme action


The 'lock and key' Model:

  • ezymes and substrates are complimentary to each other
  • an early model and doesn't give the full story

1. the enzyme and substrate fit together, forming an enzyme-substrate complex

2. the reation takes place, forming an enzyme-product complex (the products not yet released)

3. the products are released and the enzyme is then reused


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