Which of the following structures represents | vedclass

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(A) peptide chain is formed by the linkage of amino acids through peptide bonds. An amino acid has the general structure $NH_2 - CH(R) - COOH$. When a

Vedclass · Accepted Answer

$ - NH - CH(R) - CO - NH - CH(R) - CO - NH - CH(R) - CO - $

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(A) peptide chain is formed by the linkage of amino acids through peptide bonds. An amino acid has the general structure $NH_2 - CH(R) - COOH$. When amino acids polymerize,the carboxyl group $(-COOH)$ of one amino acid reacts with the amino group $(-NH_2)$ of the next amino acid,releasing a water molecule $(H_2O)$ to form a peptide bond $(-CO-NH-)$. Therefore,the repeating unit in a peptide chain is represented as $... - NH - CH(R) - CO - NH - CH(R) - CO - ...$. Option $A$ and $C$ represent this structure correctly.

Which of the following structures represents a peptide chain?

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