Shuttle mutagenesis of Neisseria gonorrhoeae: Pilin null mutations lower DNA transformation competence

H. S. Seifert, R. S. Ajioka, D. Paruchuri, F. Heffron, M. So

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    104 Scopus citations


    The method of shuttle mutagenesis has been extended to Neisseria gonorrhoeae. We have constructed a defective mini-Tn3 derivative that encodes chloramphenicol resistance in both N. gonorrhoeae and Escherichia coli and selected for mutations in the chloramphenicol resistance gene that express higher levels of antibiotic resistance in N. gonorrhoeae. Isogenic N. gonorrhoeae strains that differ only in pilin expression were constructed and used to test the effect of pilin null mutations on DNA transformation competence.

    Original languageEnglish (US)
    Pages (from-to)40-46
    Number of pages7
    JournalJournal of bacteriology
    Issue number1
    StatePublished - Jan 1 1990


    ASJC Scopus subject areas

    • Microbiology
    • Molecular Biology

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