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Applied and Environmental Microbiology, June 2008, p. 3615-3617, Vol. 74, No. 11
0099-2240/08/$08.00+0 doi:10.1128/AEM.02870-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.
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Laboratory of Microbial Gene Technology and Food Microbiology, Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (UMB), P.O. Box 5003, N-1432 Ås, Norway
Received 19 December 2007/ Accepted 8 April 2008
A β-galactosidase reporter system for the analysis of promoter elements in Propionibacterium freudenreichii was designed. The pTD210 in vivo reporter vector was constructed using a promoterless lacZ gene from Bifidobacterium longum cloned into the pAMT1 plasmid. The utility of the pTD210 reporter vector was demonstrated by an investigation of six predicted promoters in P. freudenreichii. The system produced accurate and reproducible measurements that facilitated both promoter identification and the quantification of promoter activities.
Published ahead of print on 18 April 2008.
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