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J. Bacteriol., Mar 1997, 1946-1950, Vol 179, No. 6
Copyright © 1997, American Society for Microbiology

Genomic organization of the acidophilic chemolithoautotrophic bacterium Thiobacillus ferrooxidans ATCC 21834

N Irazabal, I Marin and R Amils
Centro de Biologia Molecular Severo Ochoa, CSIC-UAM, Universidad Autonoma de Madrid, Spain.

The genomic organization of the acidophilic chemolithoautotrophic bacterium Thiobacillus ferrooxidans ATCC 21834 has been studied by pulsed-field gel electrophoresis (PFGE). Analysis of its intact DNA, as well as the restriction patterns obtained with several endonucleases, allowed the characterization of one circular chromosome of 2.9 Mb and one plasmid of 8.6 kb. The first complete and highly resolved physical map (86 restriction sites) of the chromosome of an acidophilic obligate chemolithoautotrophic bacterium has been constructed by using endonucleases PmeI, SwaI, XbaI, and SpeI. The rRNA and str operons have been located on the chromosomal physical map.


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