The amino acid Asp is triprotic with pK₁ = 1.88, pK2 = 9.60, and pK3 = 3.65. What is the charge of the a-NH3* functional group at pH 11? What is the net charge of Asp at pH 11? [Select]

Macmillan Learning COO™ addition of a hydroxyl group -OOC-CH-CH₂-CH-COO 1 *NH₂ ✓addition of a carboxyl group modification of the a-amino group removal of a side chain amino group removal of a -CH group standard amino acid: Identify the modification that yields the second amino acid depicted. addition of a carboxyl group Glutamic Acid

10. Use the information in the table below to draw the structure of the predominant form of each amino acid at physiological pH (pH = 7.4) R side chain pKa (a-COOH) -CH₂CH(CH3)2 -(CH2)4NH2 -(CH2)2CO2H Amino acid Leucine Lysine Glutamic acid L-leucine L-lysine L-glutamic acid 2.36 2.18 2.19 pKa (α-NH3*) pKa (side chain) 9.60 8.95 9.67 10.79 4.25

Question 6 of 15 Submit Classify the amino acid depicted here in the form at physiological pH (~7.4). O: H₂N* A) acidic B) basic C O C) nonpolar D) neutral HU CH₂ O C JU +

An unknown amino acid labeled KEMISTRI has an IpH value equal to 5.41. If its pKa1 is equal to 2.03, calculate the pKa2 of KEMISTRI. Show complete solutions. Based on the table below, what is the probable identity of KEMISTRI?

The pKa values of each group are shown above. In the structures below, fill in the missing atoms/charges for the amino acid at each indicated pH.