Look up the pKas of glutamic acid and draw thestructures for the predominant forms of glutamic acid at pH 1.0, pH3.0, pH 7.4, and pH 12. Examine the structures and determine thenet charge of glutamic acid at each of these pHs. The pH at which the predominant form of an amino acid has a net of 0 is known asthe pI. Estimate the pI of glutamic acid.