5.2 Here's the basic model for an enzyme-catalyzed reaction. Assume that substrate binding is rate determining. Write the equations for the total amount of enzyme in the reaction and the rate of the reaction. k2 k1 E + S k.1 ES – →E + P

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### Enzyme-Catalyzed Reaction Model

**5.2 Here's the basic model for an enzyme-catalyzed reaction. Assume that substrate binding is rate-determining. Write the equations for the total amount of enzyme in the reaction and the rate of the reaction.**

#### Reaction Diagram Explanation

The diagram depicts a basic enzyme-catalysis model:

1. **E + S ↔ ES**: 
   - **E** represents the enzyme.
   - **S** stands for the substrate.
   - The forward reaction, where the enzyme binds to the substrate to form the enzyme-substrate complex (ES), is represented by the rate constant **k₁**.
   - The backward reaction, where the enzyme-substrate complex dissociates back into the enzyme and the substrate, is represented by the rate constant **k₋₁**.

2. **ES → E + P**: 
   - The conversion of the enzyme-substrate complex to the enzyme and product (P) is represented by the rate constant **k₂**.

This model highlights the reversible binding and formation of the enzyme-substrate complex, followed by the formation of the product. The rate constants indicate the speed of each step in the reaction process. The assumption that substrate binding is rate-determining suggests the initial binding of the substrate limits the overall reaction rate.
Transcribed Image Text:### Enzyme-Catalyzed Reaction Model **5.2 Here's the basic model for an enzyme-catalyzed reaction. Assume that substrate binding is rate-determining. Write the equations for the total amount of enzyme in the reaction and the rate of the reaction.** #### Reaction Diagram Explanation The diagram depicts a basic enzyme-catalysis model: 1. **E + S ↔ ES**: - **E** represents the enzyme. - **S** stands for the substrate. - The forward reaction, where the enzyme binds to the substrate to form the enzyme-substrate complex (ES), is represented by the rate constant **k₁**. - The backward reaction, where the enzyme-substrate complex dissociates back into the enzyme and the substrate, is represented by the rate constant **k₋₁**. 2. **ES → E + P**: - The conversion of the enzyme-substrate complex to the enzyme and product (P) is represented by the rate constant **k₂**. This model highlights the reversible binding and formation of the enzyme-substrate complex, followed by the formation of the product. The rate constants indicate the speed of each step in the reaction process. The assumption that substrate binding is rate-determining suggests the initial binding of the substrate limits the overall reaction rate.
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