The structure and function of proteins - essay plan
- Created by: Sian McPherson
- Created on: 27-01-15 10:15
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- The Structure & Function of Proteins
- Structure
- Primary
- Amino acid chain is determined by DNA which is read during transcription
- Secondary
- Tertiary
- Is determined by the primary structure causing it to fold in a certain way
- Quaternary
- Haemoglobin & Myoglobin
- Binding to O2 allows the other O2 molecules to attach as it causes the structure to be changed
- Affinity for O2 and CO2 changes.
- Haemoglobin & Myoglobin
- Primary
- Enzymes
- Complementary Structure.
- Active Site
- The active site is determined by the primary structure causing the way in which the chain folds in the tertiary structure.
- Enzyme-substrate Complexes
- Muscles
- Actin and Myosin
- Globular structure
- Binding sites for attachment of myosin heads.
- Myosin heads have an active site for ATP
- Actin and Myosin
- Inhibition
- Inhibitors are partly complementary
- Competitive inhibitors
- They block the active sit by binding to it
- Non-Competitive inhibitors
- They change the shape of the active site, by binding to the enzyme, changing the primary structure, and therefore the tertiary one.
- Competitive inhibitors
- Inhibitors are partly complementary
- Antibodies
- Variable region
- Allows antibodies to be specific to different antigens.
- Bind together
- Agglutination
- Variable region
- Structure
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