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Question: The peptide linkage formed between glycine \((NH_{2}CN_{2}COOH)\) and alanine \((NH\underset{CH_{3}...

The peptide linkage formed between glycine

(NH2CN2COOH)(NH_{2}CN_{2}COOH) and alanine (NH2CN∣CH3−COOH)(NH\underset{CH_{3}}{\underset{|}{2CN}} - COOH) to give glycylalanine can be shown as

A

NH2−CH2−NH−CH∣CH3−COOHNH_{2} - CH_{2} - NH - \underset{CH_{3}}{\underset{|}{CH}} - COOH

B

NH2−CH2−CONH−CH∣CH3−COOHNH_{2} - CH_{2} - CONH - \underset{CH_{3}}{\underset{|}{CH}} - COOH

C

H2NCOCH2−CH∣CH3−CONH2H_{2}NCOCH_{2} - \underset{CH_{3}}{\underset{|}{CH}} - CONH_{2}

D

HOOC−CH2−NH−NH−CH∣CH3−COOHHOOC - CH_{2} - NH - NH - \underset{CH_{3}}{\underset{|}{CH}} - COOH

Answer

NH2−CH2−CONH−CH∣CH3−COOHNH_{2} - CH_{2} - CONH - \underset{CH_{3}}{\underset{|}{CH}} - COOH

Explanation

Solution

The peptide linkage formed between glycine

(H2N−CH2−COOH)(H_{2}N - CH_{2} - COOH) and alanine

(H2NCH∣CH3−COOH)(H_{2}\underset{CH_{3}}{\underset{|}{NCH}} - COOH) to give glycylalanine can be shown as