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FEMS Microbiol Lett. 1998 Feb 15;159(2):193-200.

Cloning and characterization of the fur gene from Helicobacter pylori.

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Institute of Medical Microbiology and Hygiene, Department of Microbiology and Hygiene, Freiburg, Germany.


The fur homologue of Helicobacter pylori was isolated by screening a plasmid-based, genomic DNA library using the Fur titration assay (FURTA). The analysis of the DNA sequence revealed significant homology with Fur proteins from various other bacterial species. The highest degree of homology was observed for the Fur protein from Campylobacter jejuni. The H. pylori fur gene on a plasmid could partially complement the fur mutation in Escherichia coli strain H1681. The repressor activity depended on addition of iron to the medium indicating that iron acts as a co-repressor for the H. pylori protein similar to Fur from other bacteria. Comparison of Fur from H. pylori strain NCTC11638 with the recently published genomic DNA sequence of another strain (26695) confirmed the identity of the fur homologue and revealed that the fur locus is highly conserved in both strains.

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