Enzymes
- Created by: EleanorRose.
- Created on: 04-02-15 10:05
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- Enzymes
- Globular proteins that act as catalysts
- Reusable
- Specific 3D shape
- Only small part functions
- Active site
- If shape changes it is no longer complementary
- Active site
- Lock and key
- Substrate and enzyme are complementary of each others shape
- Substrate and enzymes bind together to form an substrate-enzyme complex
- Induced fit
- Active site slightly changes shape
- Factors effecting activity
- pH
- Temperature
- Substrate and enzyme concentration
- Inhititors
- Competetive
- Substrate must bind but it is prevented by the presence of an inhibitor with a similar shape
- They must compete fort he active site, this reduces the reaction
- Substrate must bind but it is prevented by the presence of an inhibitor with a similar shape
- Non-Competetive
- same molecule inhibits reaction as it binds to the allosteric site
- This alters the tertiary shape, making the active site no longer complementary
- same molecule inhibits reaction as it binds to the allosteric site
- Competetive
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