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Journal of Bacteriology, April 2009, p. 2409-2413, Vol. 191, No. 7
0021-9193/09/$08.00+0     doi:10.1128/JB.01751-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

An RNA Hairpin Sequesters the Ribosome Binding Site of the Homing Endonuclease mobE Gene{triangledown}

Ewan A. Gibb and David R. Edgell*

Department of Biochemistry, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, Canada N6A 5C1

Received 15 December 2008/ Accepted 21 January 2009

Previous transcript mapping of the bacteriophage Aeh1 nrd operon revealed a predicted RNA hairpin upstream of the homing endonuclease mobE gene. We enzymatically mapped the hairpin, showing that the mobE ribosome binding site is sequestered. Cloning of the hairpin upstream of lacZ resulted in reduced β-galactosidase activity, consistent with translational regulation.


* Corresponding author. Mailing address: The University of Western Ontario, Department of Biochemistry, London, Ontario, Canada N6G 1C7. Phone: 519-661-3133. Fax: 519-661-3175. E-mail: dedgell{at}uwo.ca

{triangledown} Published ahead of print on 30 January 2009.


Journal of Bacteriology, April 2009, p. 2409-2413, Vol. 191, No. 7
0021-9193/09/$08.00+0     doi:10.1128/JB.01751-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.