NDLI: Transcriptional regulation of hemO encoding heme oxygenase in Clostridium perfringens

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Journal of Microbiology : Volume 47

Journal of Microbiology : Volume 46

Transcriptional regulation of hemO encoding heme oxygenase in Clostridium perfringens

Content Provider	Springer Nature Link
Author	Hassan, Sufi Ohtani, Kaori Wang, Ruoyu Yuan, Yonghui Wang, Yun Yamaguchi, Yumi Shimizu, Tohru
Copyright Year	2010
Abstract	A Gram-positive anaerobic pathogen, Clostridium perfringens, causes clostridial myonecrosis or gas gangrene in humans by producing numerous extracellular toxins and enzymes that act in concert to degrade host tissues. The ability of infectious bacteria to acquire sufficient iron during infection is essential for the pathogen to cause disease. In the C. perfringens strain 13 genome, a heme oxygenase gene homologue (CPE0214, hemO) was found and its role was examined. The purified recombinant HemO protein showed heme oxygenase activity that can convert heme to biliverdin. hemO transcription was induced in response to extracellular hemin in a dose-dependent manner. The global two-component VirR/VirS regulatory system and its secondary regulator VR-RNA had positive regulatory effects on the transcription of hemO. These data indicate that heme oxygenase may play important roles in iron acquisition and cellular metabolism, and that the VirR/VirS-VR-RNA system is also involved in the regulation of cellular iron homeostasis, which might be important for the survival of C. perfringens in a human host.
Starting Page	96
Ending Page	101
Page Count	6
File Format	PDF
ISSN	12258873
Journal	Journal of Microbiology
Volume Number	48
Issue Number	1
e-ISSN	19763794
Language	English
Publisher	The Microbiological Society of Korea
Publisher Date	2010-03-11
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	C. perfringens heme oxygenase two-component system genetic regulation Microbiology
Content Type	Text
Resource Type	Article
Subject	Medicine Microbiology Applied Microbiology and Biotechnology

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