Enzymes
- Created by: Jasmin
- Created on: 19-10-13 18:40
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- Enzymes
- Structure
- Globular
- Protein chain is folded back on itself
- Own sequence of AAs
- Held in 3
- By H bonds, disulphide bridges and ionic bonds
- Held in 3
- Globular
- How enzymes work
- Biological catalysts
- CATABOLIC: large molecules break down into small molecules
- ANABOLIC: Small molecules built into larger, more complex molecules
- Lock and key theory
- Enzymes react with another molecule - substrate
- Own special shape -AS onto which substrate molecules bind
- Enzyme and substrate are complementary to each other
- Induced Fit Hypothesis
- In the presence of substrate, the AS might change in order to select the substrates shape
- Properties
- Specific
- Will catalyse only one particular reaction
- For reactions to occur
- Reactants must collide with sufficient energy to alter the arrangement of their atoms
- Initial boost of energy called activation energy. Energy required to start the reaction
- Enzymes lower the AE needed for a reaction to occur
- By forming complexes with the substrate called the 'enzyme substrate complexes'
- Enzymes lower the AE needed for a reaction to occur
- Initial boost of energy called activation energy. Energy required to start the reaction
- Reactants must collide with sufficient energy to alter the arrangement of their atoms
- Specific
- Structure
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