In the isoleucine structure the pH 1 has been lower than the isoelectric pH, thus the ammonium ion formation takes place. At pH 13, the pH has been higher than the isoelectric pH, thus the carbonium ion formation takes place in the isoleucine structure.
Isoleucine has been the essential amino acid for the body. It has been required to form haemoglobin in humans.
The structure of isoleucine has consisted of the COOH group and the amino group. The amino acid has been neutral at the isoelectric pH, while at pH lower than the isoelectric pH, the number of hydrogen ions are more in the solution. The excess hydrogen results in the formation of [tex]\rm NH_3^+[/tex] by taking up hydrogen by the basic part.
The pH lower than the isoelectric pH results in the formation of [tex]\rm COO^-[/tex] group by the loss of hydrogen ions from the acidic part.
The pH 1 has been lower than the isoelectric pH, thus the ammonium ion formation takes place. At pH 13, the pH has been higher than the isoelectric pH, thus the carbonium ion formation takes place in the isoleucine structure.
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