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Journal of Bacteriology, October 1999, p. 6205-6209, Vol. 181, No. 19
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Spore Peptidoglycan Structure in a cwlD dacB Double Mutant of Bacillus subtilis

David L. Popham,1,* Jennifer Meador-Parton,1 Catherine E. Costello,2 and Peter Setlow3

Department of Biology, Virginia Tech, Blacksburg, Virginia 240611; Mass Spectrometry Resource, Boston University School of Medicine, Boston, Massachusetts 02118-25262; and Department of Biochemistry, University of Connecticut Health Center, Farmington, Connecticut 06030-330533

Received 12 March 1999/Accepted 27 July 1999

Bacillus subtilis cwlD and dacB mutants produce spore peptidoglycan (PG) with increased cross-linking but with little change in spore core hydration compared to the wild type. A cwlD dacB double mutant produced spores with a two- to fourfold greater increase in PG cross-linking and novel muropeptides containing glycine residues but no significant changes in spore resistance or core hydration.

* Corresponding author. Mailing address: Department of Biology, 2119 Derring Hall, MC0406, Virginia Tech, Blacksburg, VA 24061. Phone: (540) 231-2529. Fax: (540) 231-9307. E-mail: dpopham{at}vt.edu.

Journal of Bacteriology, October 1999, p. 6205-6209, Vol. 181, No. 19
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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