InterviewSolution
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InterviewSolution
| 1. |
List the Structure of Proteins? |
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Answer» (a) Primary structure : Is found in the form of linear sequence of amino acids. First amino acid is called N-terminal amino acid and last amino acid is called C-terminal amino acid. (b) Secondary structure : Polypeptide chain undergoes folding or coiling which is stabilized by hydrogen bonding. Right handed helices are observed. e.g., fibrous protein in hair, nails. (c) Tertiary structure : Long protein chain is folded upon itself like a hollow wollen ball. Gives a 3-dimensional view of protein, e.g., myosin. (d) Quaternary structure : Two or more polypeptides with their foldings and coilings are arranged with respect to each other. e.g., Human haemoglobin molecule has 4 peptide chains - 2a and 2b subunits. |
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