Nucleotide substitution: G51T. Nucleotide substitution: A165T. Nucleotide substitution: T420A. Nucleotide substitution: A422T. Nucleotide substitution: A424G. Nucleotide substitution: G554A. Nucleotide substitution: G1112C. Nucleotide substitution: C1146A. Coordinates of nucleotide substitutions are according to Figure 2. of this paper.