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If the basic formula of an a-amino acid is \mathrm{\mathrm{R}-\mathrm{CH}\left(\mathrm{NH}_2\right)-\mathrm{COOH}}, where \mathrm{\mathrm{R}} is the side chain, what is the primary point of distinction between any two proteins?

Option: 1

Number of amino groups


Option: 2

Number of carboxyl groups


Option: 3

The side chain R


Option: 4

Relative positions of amino, carboxyl groups and R.


Answers (1)

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α-amino acids are the constituents of proteins. Different proteins are formed by polymerisation of different α-amino acids, which are formed due to the difference in the side chain substituted group R, which may be as simple as hydrogen or as complex as imidazole.

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Ajit Kumar Dubey

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