PubMed · 449819
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
J L Harkness, L M Brady. 1979-04-21. Campylobacter enteritis.. https://doi.org/10.5694/j.1326-5377.1979.tb112142.x
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
The in vitro phase variation of flagella and the transition rates between flagellate and aflagellate phenotypes in Campylobacter species including C. jejuni, C. coli, C. lari (thermophilic campylobacters), C. fetus subsp. fetus, C. fetus subsp. venerealis and C. hyointestinalis were investigated. The change from the flagellate to aflagellate phenotype was detected in all of the 12 Campylobacter strains studied. When measured in a motility medium, flagellate to aflagellate transition in thermophilic campylobacters, C. fetus and C. hyointestinalis strains occurred at a rate of 1.8 x 10(-3) to 7.5 x 10(-3), 3.0 x 10(-4) to 7.8 x 10(-4) and 1.8 x 10(-5) to 7.7 x 10(-6) per cell per generation, respectively. Transition from aflagellate to flagellate phenotype occurred at a rate of 5.8 x 10(-6) to 9.3 x 10(-6) per cell per generation in thermophilic campylobacters and 1.0 x 10(-6) to 1.5 x 10(-6) in C. fetus strains. No reversion from aflagellate to flagellate phenotype could be detected in C. hyointestinalis strains. It was concluded that the ability to reversibly express flagella was inherent in the wild-type strains and the transition rates for both directions were consistent for each strain.
Explore the source record for details and available documents.
Peptidoglycans (PG) from Campylobacter coli, Campylobacter jejuni, and Campylobacter fetus were composed of muramic acid, glucosamine, alanine, glutamic acid, and diaminopimelic acid in a molar ratio of 1.1:1:1.7:1.1:09. Thirty percent of the amino groups of diaminopimelic acid were involved in cross-linkages between peptides. During cultivation, C. coli and C. jejuni changed from a spiral to a coccoid form. In C. coli, we could isolate PG only from the spiral forms in yields of 0.8-1.2% by dry weight. C. fetus did not change to a coccoid form, and always contained PG. Thus, it is possible that the morphological transformation from the spirals to the coccoid forms of C. coli and C. jejuni is accompanied by, and probably due to, the degradation of PG.