Which amino acid contains a polar and positiv | vedclass

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Question

(D) Amino acids are classified based on the nature of their '$R$' group.$1$. Aspartic acid and Glutamic acid have acidic '$R$' groups (negatively char

Vedclass · Accepted Answer

Lysine

Vedclass · Answer

(D) Amino acids are classified based on the nature of their '$R$' group.$1$. Aspartic acid and Glutamic acid have acidic '$R$' groups (negatively charged).$2$. Threonine has a polar but uncharged '$R$' group (contains a hydroxyl group).$3$. Lysine has a basic '$R$' group,which is polar and positively charged at physiological $pH$ due to the presence of an amino group in the side chain.Therefore,Lysine is the correct answer.

Which amino acid contains a polar and positively charged '$R$' group?

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