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The isoelectric point(pl) of an amino ac...

The isoelectric point(pl) of an amino acid is the pH of wihc it has no net charge. The pl of an amino acid that does not have an ionizable side chain such as alanine, is midway between its two pka values.

If an amino acid has ionizable side chain. its pl is the average of the pka values of the similarly ionizing groups.
Find the pl of the following amino acids

A

`3.22`

B

6.44

C

7.96

D

5.93

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The correct Answer is:
A
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The isoelectric point(pl) of an amino acid is the pH of wihc it has no net charge. The pl of an amino acid that does not have an ionizable side chain such as alanine, is midway between its two pka values. If an amino acid has ionizable side chain. its pl is the average of the pka values of the similarly ionizing groups. What is the pl of the following amino acids?

Isoelectric Point OF Amino Acid

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  • The isoelectric point(pl) of an amino acid is the pH of wihc it has no net charge. The pl of an amino acid that does not have an ionizable side chain such as alanine, is midway between its two pka values. If an amino acid has ionizable side chain. its pl is the average of the pka values of the similarly ionizing groups. Find the structure of the following amino acids at pH=1:

    A
    B
    C
    D

  • Isoelectric point of an amino acid is the pH at which the amino acid molecules

    A
    migrate to the anode
    B
    migrate to the cathode
    C
    would not migrate either to the anode or to the cathode and exist as neutral dipolar ions
    D
    move alternatively to the anode and the cathode

  • The amino acid which has a nonpolar side chain is

    A
    isoleusine
    B
    aspartic acid
    C
    serine
    D
    lysine

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