Figure 3. Solubility of recombinant and native amelogenins. (a) Solubility of rM179 and rM166 in 0.05 M potassium phosphate buffer, 0.15 M ionic strength, 25°C, as a function of pH. (b) Solubility of the 25K, 23K, and 20K porcine amelogenins under the same conditions. (Reprinted from Tan et al., 1998, with permission.) The 25K, 23K, and 20K proteins are analogous to P173, P161, and P148, respectively.