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Journal of Bacteriology, August 2001, p. 4894-4899, Vol. 183, No. 16
Department of Biochemistry, University of
Connecticut Health Center, Farmington, Connecticut 06032
Received 28 March 2001/Accepted 30 May 2001
Germination of mutant spores of Bacillus subtilis
unable to degrade their cortex is accompanied by excretion of
dipicolinic acid and uptake of some core water. However, compared to
wild-type germinated spores in which the cortex has been degraded, the
germinated mutant spores accumulated less core water, exhibited greatly
reduced enzyme activity in the spore core, synthesized neither ATP nor reduced pyridine or flavin nucleotides, and had significantly higher
resistance to heat and UV irradiation. We propose that the germinated
spores in which the cortex has not been degraded represent an
intermediate stage in spore germination, which we term stage I.
0021-9193/01/$04.00+0 DOI: 10.1128/JB.183.16.4894-4899.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Properties of Spores of Bacillus
subtilis Blocked at an Intermediate Stage in Spore
Germination
*
Corresponding author. Mailing address: Department of
Biochemistry, MC 3305, University of Connecticut Health Center, 263 Farmington Ave., Farmington, CT 06032. Phone: (860) 679-2607. Fax:
(860) 679-3408. E-mail: setlow{at}sun.uchc.edu.
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