Additional file 1.

Electronic supplementary materials are available: bacterial strains (Table S1), plasmids (Table S2), primers (Table S3), and the substrate-specific codon sequences (Table S4); sequence alignment (Figures S1-6) and mutant construction (Schemes S1-8).

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Du et al. BMC Microbiology 2014 14:30   doi:10.1186/1471-2180-14-30