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. 2016 Nov 15;9:247. doi: 10.1186/s13068-016-0664-1

Table 4.

Predicted pKa value of the A242D site and specific ΔpKa terms of its surrounding residues

Site pKa pKmodel Desolvation effect Hydrogen bonding Charge–charge interaction
Global Local Side chain Backbone
A242D 8.83 3.8 4.36 1.33 T208 (−0.08)
Q209 (−0.29)
N234 (−0.45)
D238 (+0.14)
N243 (−0.08)
E314 (+0.10)

Values in brackets indicate the pKa shift effect of each residue