Question

What form exists at the isoelectric point of each of the following amino acids: (a) valine; (b)leucine; (c)proline; (d) glutamic acid.

Short answer

(a)

(d)

Step-by-step solution

Isoelectric point

The isoelectric point denoted as pI constitutes the pH at which a specific molecule comprises a total electrical charge of zero. The pI of the molecule comprising one amine and a carboxyl group can be evaluated according to the formula:

Amino acid

Organic compounds possessing a carboxylic group and an amino group together with an alkyl group are amino acids. The different categories of amino acids comprise essential and non-essential amino acids.

Identification of the form that exists at the isoelectric point of each amino acid

(a)The form existing at the isoelectric point for the amino acid, valine is given as:

Form existing at the isoelectric point for valine

(b)The form existing at the isoelectric point for the amino acid, leucine is given as:

Form existing at the isoelectric point for leucine