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Infection and Immunity, December 2003, p. 7170-7172, Vol. 71, No. 12
0019-9567/03/$08.00+0 DOI: 10.1128/IAI.71.12.7170-7172.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.
Deletion of Mycobacterium tuberculosis Sigma Factor E Results in Delayed Time to Death with Bacterial Persistence in the Lungs of Aerosol-Infected Mice
Masaru Ando,
Tetsuyuki Yoshimatsu, Chiew Ko, Paul J. Converse, and William R. Bishai*
Department
of Medicine, Center for Tuberculosis Research, Johns Hopkins School of
Medicine, Baltimore, Maryland 21231
Received 9 June 2003/
Returned for modification 2 August 2003/
Accepted 8 August 2003
The
stress-induced extracytoplasmic sigma factor E (SigE) of
Mycobacterium tuberculosis shows increased expression after
heat shock, sodium dodecyl sulfate treatment, and oxidative stress, as
well as after phagocytosis in macrophages. We report that deletion of
sigE results in delayed lethality in mice without a
significant reduction of bacterial numbers in
lungs.
* Corresponding
author. Mailing address: Center for Tuberculosis Research, Johns
Hopkins School of Medicine, Johns Hopkins University, 1503 E. Jefferson
St., Baltimore, MD 21231-1001. Phone: (410) 955-3507. Fax: (410)
614-8173. E-mail:
wbishai{at}jhsph.edu.
Editor:
W. A. Petri, Jr.
Present
address: Division of Pulmonary Diseases, Department of Immunology and
Allergy, Oita Medical University, Oita, Japan.
Infection and Immunity, December 2003, p. 7170-7172, Vol. 71, No. 12
0019-9567/03/$08.00+0 DOI: 10.1128/IAI.71.12.7170-7172.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.
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