Enzymes

• What does the lock and key model suggest?

  Substrate binds to the active site forming an enzyme substrate complex

  Enzyme converts substrate into its products, forming an enzyme-product complex

  Product released from enzymes active site
• What is the induced fit model?

  Substrate enters active site, making an enzyme-substrate complex

  The enzyme undergoes a conformational change, which causes an enzyme-product complex to form

  Product is released from active site
• Why is induced fit preferred?

  Explains how not all enzymes catalyse a single reaction

  The conformational change places stress on the bonds, explaining how bonds form products