Table 3.

pK_a values of isoAsp and C-terminal Asp in peptides reported in Table 1 in comparison with previously reported values (Platzer et al. 2014).

	Experimental pKa (this work)a	Previously reported pKa valuesb
isoAsp (internal)	3.2
Asp (internal)		3.86
AspC-term (side chain)	5.0
AspC-term (carboxyl terminus)	3.4
AlaC-term		3.55

^apK_a^H* values measured in D₂O with direct reading of the H₂O-calibrated pH-meter, at 0 mM NaCl

^bpK_a^H values measured in H₂O at 50 mM NaCl