Neisseria gonorrhoeae PilC expression provides a selective mechanism for structural diversity of pili.
نویسندگان
چکیده
منابع مشابه
Role of pili and the phase-variable PilC protein in natural competence for transformation of Neisseria gonorrhoeae.
The Gram-negative bacterial pathogen Neisseria gonorrhoeae is naturally competent for transformation with species-related DNA. We show here that two phase-variable pilus-associated proteins, the major pilus subunit (pilin, or PilE) and PilC, a factor known to function in the assembly and adherence of gonococcal pili, are essential for transformation competence. The PilE and PilC proteins are ne...
متن کاملRole of pili in the virulence of Neisseria gonorrhoeae.
Gonococci of the colonial types that are associated with virulence, types 1 and 2, have pili that enable the bacteria both to attach in vitro to human epithelial cells and to resist phagocytosis by polymorphonuclear leukocytes. These piliated gonococci also agglutinate various mammalian and chicken erythrocytes. Gonococci of an avirulent colonial type, i.e., type 4, have no pili and neither att...
متن کاملProduction of Neisseria gonorrhoeae pili (fimbriae) in Pseudomonas aeruginosa.
Pseudomonas aeruginosa K/2PfS, when transformed with an expression plasmid harboring the pilin gene (pilE1) of Neisseria gonorrhoeae MS11, was able to express and assemble gonococcal pilin monomers into surface-associated pili, as judged by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, immunoblotting, and immunoelectron microscopy. Concomitant with the expression of gonococcal pili...
متن کاملGenetic diversity of Neisseria gonorrhoeae housekeeping genes.
Molecular typing of Neisseria gonorrhoeae strains is an important tool for epidemiological studies of gonococcal infection and transmission. The recently developed multilocus sequence typing (MLST) method is based on the genetic variation among housekeeping genes. As a preliminary investigation for the development of such a method, we characterized the genetic diversity at 18 gonococcal houseke...
متن کاملFurther studies with a selective medium for cultivating Neisseria gonorrhoeae.
A culture medium that is selective for the gonococcus and the meningococcus has been described recently (Thayer and Martin, 1964). The medium with Polymyxin and Ristocetin added permits isolation of the gonococcus from sites highly contaminated with other bacteria. Overgrowth of gonococcal colonies by the commensal bacterial flora present in rectal, vaginal, and cervical specimens is almost com...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1992
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.89.8.3204