Journal of Bacteriology, March 2001, p. 1824-1829, Vol. 183, No. 5
0021-9193/01/$04.00+0 DOI: 10.1128/JB.183.5.1824-1829.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
-Proteobacteria Caulobacter crescentus and
Rickettsia prowazekii
Department of Microbiology and Immunology, McGill University, Montreal, Quebec H3A 2B4, Canada
Received 27 July 2000/Accepted 13 December 2000
A 30-kb region surrounding the replication origin in
Caulobacter crescentus was analyzed. Comparison to the
genome sequence of another
-proteobacterium, Rickettsia
prowazekii, revealed a conserved cluster of genes (RP001,
hemE, hemH, and RP883) that overlaps the established origin
of replication in C. crescentus and the putative origin of
replication in R. prowazekii. The genes flanking this
cluster differ between these two organisms. We therefore propose
that this conserved gene cluster can be used to identify the origin of
replication in other
-proteobacteria.
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