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Infection and Immunity, December 2000, p. 7137-7140, Vol. 68, No. 12
0019-9567/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
DNA Rearrangements in the Flagellin Locus of an flaA
Mutant of Campylobacter jejuni during Colonization of
Chicken Ceca
Piet J. M.
Nuijten,1,*
Anton J. G.
van den Berg,1
Ivan
Formentini,1
Bernard A. M.
van der Zeijst,2,
and
Anton A. C.
Jacobs1
Intervet International b.v., 5830 AA
Boxmeer,1 and Department of Bacteriology,
Faculty of Veterinary Medicine, Universiteit Utrecht,
Utrecht,2 The Netherlands
Received 9 March 2000/Returned for modification 8 May 2000/Accepted 28 August 2000
Campylobacter jejuni is an enteropathogen for humans
but commensal for chickens. In both hosts, the flagella and motility are important colonization factors. The flagellin gene is duplicated in
Campylobacter, but only one flagellin gene,
flaA, is sufficient for motility. We found that, during
colonization of the chicken intestine, a nonmotile flaA
mutant of C. jejuni underwent rearrangements within its
flagellin locus, thereby regaining its motility and colonization
capacity. In contrast, in vitro motile revertants isolated from liquid
culture showed different flagellin DNA rearrangements than after
reversion in the chicken.
*
Corresponding author. Mailing address: Bacteriological
R&D, Intervet International BV, P.O. Box 31, 5830 AA Boxmeer, The
Netherlands. Phone: 31(0)485-587326. Fax: 31(0)485-587490. E-mail:
Piet.nuijten{at}intervet.com.

Present address: National Institute of Public Health, 3720 BA
Bilthoven, The
Netherlands.
Infection and Immunity, December 2000, p. 7137-7140, Vol. 68, No. 12
0019-9567/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
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