Serine (HOCH_2CH(NH_2)COOH) is an amino acid. | vedclass

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(A) The structure of serine is $HOCH_2-CH(NH_2)-COOH$. In a Fischer projection for an $L$-amino acid,the $-COOH$ group is placed at the top,the $-R$ g

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(A) The structure of serine is $HOCH_2-CH(NH_2)-COOH$. In a Fischer projection for an $L$-amino acid,the $-COOH$ group is placed at the top,the $-R$ group (side chain) at the bottom,and the $-NH_2$ group is on the left side. For serine,the side chain $-R$ is $-CH_2OH$. Thus,placing $-COOH$ at the top,$-CH_2OH$ at the bottom,$-NH_2$ on the left,and $-H$ on the right gives the correct $L$-serine configuration. This corresponds to the structure shown in option $A$.

Amino acid	$pH$ at Isoelectric point
$(Amino \ acid)_{I}$	$6$
$(Amino \ acid)_{II}$	$9.8$
$(Amino \ acid)_{III}$	$3.9$

Serine $(HOCH_2CH(NH_2)COOH)$ is an amino acid. The correct Fischer projection of $L$-serine is:

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