Figure 3.

First-order rate plot of the deamidation of the peptide Gly-Ala-Asn-His-Gly. Deamidation half time for the 1.0 × 10⁻³ M peptide in 0.15 M Tris⋅HCl, at pH 7.4, and 37.0°C was calculated to be 9.3 days, and the first-order rate constant k = 0.86 × 10⁻⁶⋅sec⁻¹.