Jonathan A. Eisen jeisen at leland.stanford.edu
Tue Dec 5 02:39:46 EST 1995

dr at general.org (David Rosten) wrote:
>Is campylobacter a spirochete?

Molecular phylogenetic analysis of rRNA genes suggest that species
in the Campylobacter genus are members of the Proteobacteria phyla
and they have been grouped into the epsilon subdivision (with
Helicobacter).  Other Proteobacteria include E. coli (gamma
subdivision), Agrobacterium tumefaciens (alpha), and Myxococcus
xanthus (delta).

For analysis of Campylobacter see for example:

  23s rRNA --- Trust et al. 1994.  J. Bacteriol. 176: 4597-4609.
  16s rRNA --- Rainey et al. 1993. Syst Appl Microbiol 16: 373-379.

Analysis of protien encoding genes supports the grouping of 
Campylobacter and Helicobacter as well as the placement of 
these species into the Protebacterial group. See for example
(when it comes out) - analysis of RecA sequences -  Eisen. 1995.
J. Mol. Evol. in Press.

! Jonathan A. Eisen                       415-723-2425 (lab)         !
! Department of Biological Sciences       415-725-1848 (fax)         !
! Stanford University                     415-497-0599 (home)        !
! Stanford, CA   94305-5020               jeisen at leland.stanford.edu !

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