Table 1.

Validation of the modeled 3D structures of the mutants.

Mutant	ProSA-Web (Z-score)	ERRAT Quality Factor	VERIFY 3D	Output
N439K	−5.44	89.79%	85.65% of the residues have averaged 3D-1D score≥0.2	Pass
S477 N	−5.76	91.62%	82.96% of the residues have averaged 3D-1D score≥0.2	Pass
T478K	−5.64	88.57%	90.87% of the residues have averaged 3D-1D score≥0.2	Pass