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Journal of Bacteriology, October 1999, p. 6192-6196, Vol. 181, No. 19
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Interstrain Variation of the Polysaccharide B Biosynthesis Locus of Bacteroides fragilis: Characterization of the Region from Strain 638R

Laurie E. Comstock,1,* Michael J. Coyne,1 Arthur O. Tzianabos,1 and Dennis L. Kasper1,2

Channing Laboratory, Department of Medicine, Brigham and Women's Hospital,1 and Department of Microbiology and Molecular Genetics,2 Harvard Medical School, Boston, Massachusetts 02115

Received 10 May 1999/Accepted 15 July 1999

The sequence and analysis of the capsular polysaccharide biosynthesis locus, PS B2, of Bacteroides fragilis 638R are described, and the sequence is compared with that of the PS B1 biosynthesis locus of B. fragilis NCTC 9343. Two genes of the region, wcgD and wcgC, are shown by complementation to encode a UDP-N-acetylglucosamine 2-epimerase and a UDP-N-acetylmannosamine dehydrogenase, respectively.

* Corresponding author. Mailing address: Channing Laboratory, 181 Longwood Ave., Boston, MA 02115. Phone: (617) 525-2679. Fax: (617) 731-1541. E-mail: lcomstock{at}channing.harvard.edu.

Journal of Bacteriology, October 1999, p. 6192-6196, Vol. 181, No. 19
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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