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Journal of Bacteriology, July 2000, p. 4124-4127, Vol. 182, No. 14
0021-9193/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
All Major Regions of FtsK Are Required for
Resolution of Chromosome Dimers
David S.
Boyle,*
Dawn
Grant,
G. Craig
Draper,
and
William D.
Donachie
Institute of Cell & Molecular Biology,
University of Edinburgh, Edinburgh EH9 3JR, Scotland
Received 20 December 1999/Accepted 13 April 2000
Resolution of chromosome dimers, by site-specific recombination
between dif sites, is carried out in Escherichia
coli by XerCD recombinase in association with the FtsK protein.
We show here that a variety of altered FtsK polypeptides, consisting of
the N-terminal (cell division) domain alone or with deletions in the proline-glutamine-rich part of the protein, or polypeptides consisting of the C-terminal domain alone are all unable to carry out
dif recombination. Alteration of the putative
nucleotide-binding site also abolishes the ability of FtsK to carry out
recombination between dif sites.
*
Corresponding author. Present address: Sidney Kimmel
Cancer Center, 10835 Altman Row, San Diego, CA 92121. Phone: (858)
450-5990, ext. 257. Fax: (858) 550-3998. E-mail:
Dboyle{at}skcc.org.

Present address: Department of Chemistry & Biochemistry, University
of California at Los Angeles, Los Angeles, CA
90095.
Journal of Bacteriology, July 2000, p. 4124-4127, Vol. 182, No. 14
0021-9193/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
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