Question

Draw the structure of the pentapeptide, ERNFW, at pH 1.5, 7.0 and 12.5.

Draw the structure of the pentapeptide, ERNFW, at pH 1.5, 7.0 and 12.5.

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Answer #1

At low pH (1.5), all acidic and basic groups exist in protonated form. At pH (7.0), acidic group exist in deprotonated form and basic group exist in protonated form. At high pH (12.5), all groups exist in deprotonated form.

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Draw the structure of the pentapeptide, ERNFW, at pH 1.5, 7.0 and 12.5.
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