Question
The peptide linkage formed between glycine \[\left( N{{H}_{2}}C{{H}_{2}}COOH \right)\] and alanine \[(\underset{\begin{smallmatrix} \,| \\ \,\,\,\,\,C{{H}_{3}} \end{smallmatrix}}{\mathop{N{{H}_{2}}CH-}}\,COOH)\] to give glycylalanine can be shown as
A.
\[N{{H}_{2}}-C{{H}_{2}}-NH\underset{\begin{smallmatrix}
|\,\,\,\,\,\, \\
C{{H}_{3}}\,\,
\end{smallmatrix}}{\mathop{-CH-}}\,COOH\]
B.
\[N{{H}_{2}}-C{{H}_{2}}-CONH\underset{\begin{smallmatrix}
|\,\,\,\,\,\, \\
C{{H}_{3}}\,\,
\end{smallmatrix}}{\mathop{-CH-}}\,COOH\]
C.
\[{{H}_{2}}NCOC{{H}_{2}}\underset{\begin{smallmatrix}
|\,\,\,\,\,\, \\
C{{H}_{3}}\,\,
\end{smallmatrix}}{\mathop{-CH-}}\,CON{{H}_{2}}\]
D.
\[HOOC-C{{H}_{2}}-NH-NH\underset{\begin{smallmatrix}
|\,\,\,\,\,\, \\
C{{H}_{3}}\,\,
\end{smallmatrix}}{\mathop{-CH-}}\,COOH\]
Answer :
\[N{{H}_{2}}-C{{H}_{2}}-CONH\underset{\begin{smallmatrix}
|\,\,\,\,\,\, \\
C{{H}_{3}}\,\,
\end{smallmatrix}}{\mathop{-CH-}}\,COOH\]
Solution :
The peptide linkage formed between glycine $$\left( {{H_2}N - C{H_2} - COOH} \right)$$ and alanine \[(\underset{\begin{smallmatrix} \,| \\ \,\,\,\,C{{H}_{3}} \end{smallmatrix}}{\mathop{{{H}_{2}}NCH-}}\,COOH)\] to give glycylalanine can be shown as :
The peptide linkage formed between glycine $$\left( {{H_2}N - C{H_2} - COOH} \right)$$ and alanine \[(\underset{\begin{smallmatrix} \,| \\ \,\,\,\,C{{H}_{3}} \end{smallmatrix}}{\mathop{{{H}_{2}}NCH-}}\,COOH)\] to give glycylalanine can be shown as :
