Isolation by streptonigrin enrichment and characterization of a transferrin-specific iron uptake mutant of Neisseria meningitidis.


The bactericidal action of the antibiotic streptonigrin is enhanced by large intracellular iron pools. Using this observation, we have utilized a simple enrichment protocol to aid in the isolation of iron uptake mutants of N. meningitidis, based on the relative resistance of iron-starved meningococci to streptonigrin. One such mutant, FAM29, was impaired in… (More)


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