Mechanism Of Enzyme Action

Mechanism Of Enzyme Action


MECHANISM OF ENZYME ACTION

Michaelis- Menten Kinetic Theory-

  • Also called as Enzyme- Substrate Complex Theory
  • Enzyme (E) combines with its substrate (s) to form enzyme- substrate complex to form product (P).
  • Michaelis- Menten theory states how reaction velocity varies with substrate concentration.
  • V=Vmax (S) /Km + (S)
  • Where V0– initial reaction velocity , Vmax- maximum velocity, Km- michaelis menten constant, S= substrates
  • Km defined as substrate concentration at which the reaction rate is half of maximum.
  • The reaction takes place in active site.

  • Michaelis constant (Km)-

Fischer’s Template Theory-

  • This theory is the lock and key model.
  • The enzyme and substrate fit each other.
Exam Question
 
  • Also called as Enzyme- Substrate Complex Theory.
  • Enzyme (E) combines with its substrate (s) to form enzyme- substrate complex to form product (P).
  • V=Vmax (S) /Km + (S)
  • Km- michaelis menten constant
  • The reaction takes place in active site.
  • Fischer’s template theory is the lock and key model.
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