The pH at the isoelectric point of three amin | vedclass

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(B) The isoelectric point $(pI)$ of an amino acid is the $pH$ at which it exists as a zwitterion and has no net charge.$1$. $(Amino \ acid)_{III}$ has

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Lysine

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(B) The isoelectric point $(pI)$ of an amino acid is the $pH$ at which it exists as a zwitterion and has no net charge.$1$. $(Amino \ acid)_{III}$ has $pI = 3.9$,which is acidic. This corresponds to an acidic amino acid like Aspartic acid.$2$. $(Amino \ acid)_{I}$ has $pI = 6$,which is near neutral. This corresponds to a neutral amino acid like Glycine or Alanine.$3$. $(Amino \ acid)_{II}$ has $pI = 9.8$,which is basic. This corresponds to a basic amino acid like Lysine,which contains an extra amino group.

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

The $pH$ at the isoelectric point of three amino acids are given as follows:

Amino acid $pH$ at Isoelectric point

$(Amino \ acid)_{I}$ $6$

$(Amino \ acid)_{II}$ $9.8$

$(Amino \ acid)_{III}$ $3.9$

$(Amino \ acid)_{II}$ is . . . . . . ?

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The $pH$ at the isoelectric point of three amino acids are given as follows: Amino acid $pH$ at Isoelectric point $(Amino \ acid)_{I}$ $6$ $(Amino \ acid)_{II}$ $9.8$ $(Amino \ acid)_{III}$ $3.9$ $(Amino \ acid)_{II}$ is . . . . . . ?