Transposon insertion mutagenesis was used to isolate mutants of Bosea thiooxidans which are impaired in thiosulfate oxidation. Suicide plasmid pSUP5011 was used to introduce the transposon Tn5 into B. thiooxidans via Escherichia coli S17.1-mediated conjugation. Neomycin-resistant transconjugants
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