Development and Characterization of a Xylose-Inducible Gene Expression System for Clostridium perfringens

Author:

Nariya Hirofumi1,Miyata Shigeru2,Kuwahara Tomomi1,Okabe Akinobu3

Affiliation:

1. Department of Microbiology, Faculty of Medicine, Kagawa University, 1750-1 Miki-cho, Kita-gun, Kagawa 761-0793, Japan

2. Department of Food and Nutritional Sciences, College of Bioscience and Biotechnology, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan

3. Department of Human Nutrition, Faculty of Contemporary Life Science, Chugokugakuen University, 83 Niwase, Kita-ku, Okayama 701-0197, Japan

Abstract

ABSTRACT A xylose-inducible gene expression vector for Clostridium perfringens was developed. Plasmid pXCH contains a chromosomal region from Clostridium difficile ( xylR -P xy lB ): xylR , encoding the xylose repressor, xylO , the xyl operator sequence, and P xylB , the divergent promoter upstream of xylBA encoding xylulo kinase and xylose isomerase. pXCH allows tightly regulated expression of the chloramphenicol acetyltransferase reporter and the α-toxin genes in response to the inducer concentration. Thus, pXCH could constitute a new valuable genetic tool for study of C. perfringens .

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

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