Question
Explain the tertiary and quaternary structure of protein with example.
✓
Answer
Tertiary structure:
- In tertiary structure the peptide chains are much looped, twisted and folded back on themselves due to formation of disulphide bonds.
- Such loops and bends give the protein a tertiary structure.
- E.g. Myoglobin, enzymes.
Quaternary structure:
1. When a protein has more than two polypeptide subunits their arrangement in space is called quaternary structure.
2. E.g. Haemoglobin.
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