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Journal of Bacteriology, June 2001, p. 3729-3736, Vol. 183, No. 12
0021-9193/01/$04.00+0   DOI: 10.1128/JB.183.12.3729-3736.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

Isolation and Characterization of IS1409, an Insertion Element of 4-Chlorobenzoate-Degrading Arthrobacter sp. Strain TM1, and Development of a System for Transposon Mutagenesis

Karl-Heinz Gartemann and Rudolf Eichenlaub*

Fakultät für Biologie, Lehrstuhl für Mikrobiologie/Gentechnologie, Universität Bielefeld, Bielefeld, Germany

Received 18 August 2000/Accepted 28 March 2001

A new insertion element of 1,449 bp with 25-bp perfect terminal repeats, designated IS1409, was identified in the chromosome of 4-chlorobenzoate-degrading Arthrobacter sp. strain TM1 NCIB12013. Upon insertion, IS1409 causes a target duplication of 8 bp. IS1409 carries only a single open reading frame of 435 codons encoding the transposase TnpA. Both TnpA and the overall organization of IS1409 are highly similar to those of some related insertion elements of the ISL3 group (J. Mahillon and M. Chandler, Microbiol. Mol. Biol. Rev. 62:725-774, 1998). IS1409 was also found in other 4-chlorobenzoate-degrading Arthrobacter strains and Micrococcus luteus. Based on IS1409, a series of transposons carrying resistance genes for chloramphenicol and gentamicin were constructed. These transposons were used to demonstrate transposition events in vivo and to mutagenize Arthrobacter sp. strains.

* Corresponding author. Mailing address: Department of Microbiology/Gene Technology, University of Bielefeld, Universitaetsstr., 33615 Bielefeld, Germany. Phone: 49(0)5211065558. Fax: 49(0)5211066015. E-mail: eichenlaub{at}biologie.uni-bielefeld.de.

Journal of Bacteriology, June 2001, p. 3729-3736, Vol. 183, No. 12
0021-9193/01/$04.00+0   DOI: 10.1128/JB.183.12.3729-3736.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.


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