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प्रश्न
Write a classification of proteins with an example.
उत्तर
- Globular Proteins: Molecules of globular proteins have spherical shape. This shape results from coiling around of the polypeptide chain of protein. Globular proteins are usually soluble in water.
For example: insulin, egg albumin, serum albumin, legumelin (protein in pulses) -
Fibrous Proteins: Molecules of fibrous proteins have an elongated, rod-like shape. This shape is the result of holding the polypeptide chains of protein parallel to each other. Hydrogen bonds and disulfide bonds are responsible for this shape. Fibrous proteins are insoluble. in water.
For example: keratin (present in hair, nails, and wool); myosin (protein of muscles).
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संबंधित प्रश्न
How are proteins classified on the basis of molecular shapes?
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Peptide linkage
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The correct statement for protein haemoglobin.
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| (I) |  |
| (II) |  |
| (III) |  |
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(i) van der Waals forces
(ii) disulphide linkage
(iii) electrostatic forces of attraction
(iv) hydrogen bonds
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(i) Guanine
(ii) Adenine
(iii) Thymine
(iv) Uracil
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Explain formation of peptide linkage in protein with an example.
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