Mutations conferring resistance to azide in Escherichia coli occur primarily in the secA gene.

Abstract excerpt

Mutant strains of Escherichia coli were screened for the ability to grow on L agar plates containing 3.4 or 4.6 mM sodium azide. Most mutants had mutations located in the leucine region, presumably at the azi locus. Two of these mutants were found to have a mutation in the secA gene, but expression of the resistance phenotype also required the presence of upstream gene X. While a plasmid carrying the X-secA...

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