The correct structure of histidine in a stron | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Histidine is an amino acid with three ionizable groups: the $\alpha$-amino group,the $\alpha$-carboxyl group,and the imidazole side chain. In a st

Vedclass · Accepted Answer

Vedclass · Answer

(A) Histidine is an amino acid with three ionizable groups: the $\alpha$-amino group,the $\alpha$-carboxyl group,and the imidazole side chain. In a strongly acidic solution $(pH = 2)$,the concentration of $H^{+}$ ions is very high. At this $pH$,all basic groups will be protonated: $1$. The carboxyl group exists as $-COOH$ (since $pH $2$. The $\alpha$-amino group exists as $-NH_3^+$. $3$. The imidazole side chain also gets protonated to exist as an imidazolium ion $(-NH^+)$. Therefore,the structure will have a net charge of $+2$. This corresponds to the structure shown in option $A$.

The correct structure of histidine in a strongly acidic solution $(pH = 2)$ is

Similar Questions

When $HNO_3$ is dropped into the palm and washed with water,it turns yellow. The above yellow colour is due to:

Which of the following is $NOT$ a globular protein?

What are the common types of secondary structure of proteins?

$A$ peptide synthesized by the reactions of one molecule each of Glycine,Leucine,Aspartic acid and Histidine will have ..... peptide linkages.

Which of the following is the correct structure of $L$-alanine?

Vedclass Test Series

Exam Paper Generator

Online Exam Module