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JB Accepts, published online ahead of print on 15 December 2006
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J. Bacteriol. doi:10.1128/JB.01424-06
Copyright (c) 2006, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved.

Rare group I intron with insertion sequence element in a bacterial ribonucleotide reductase gene

Qing Meng, Yi Zhang, and Xiang-Qin Liu*

Institute of Biological Sciences & Biotechnology, Donghua University, Shanghai 201620, China; Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, Nova Scotia, B3H 1X5, Canada; State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, China

* To whom correspondence should be addressed. Email: pxqliu{at}dal.ca.


  Abstract

A rare group I intron in a cyanobacterial ribonucleotide reductase gene is characterized. It contains a mobile insertion sequence element not required for RNA splicing. Ribonucleotide reductase genes are found to be hot spots for all three types of self-splicing intervening sequences including group I and II introns and intein.




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