Nucleotide substitution: C50T. Nucleotide substitution: A165T. Nucleotide substitution: C210A. Nucleotide substitution: T420A. Nucleotide substitution: A422T. Nucleotide substitution: A424G. Nucleotide substitution: G554A. Nucleotide substitution: G1112C. Nucleotide substitution: C1113T. Nucleotide substitution: A1149T. Coordinates of nucleotide substitutions are according to Figure 2. of this paper.