Identification and characterization of the gyrB gene from Treponema pallidum subsp. pallidum
- PMID: 9252582
- DOI: 10.1111/j.1574-6968.1997.tb10473.x
Identification and characterization of the gyrB gene from Treponema pallidum subsp. pallidum
Abstract
The nucleotide sequence of a DNA gyrase B subunit gene (gyrB) from Treponema pallidum has been determined. Southern blot analysis of T. pallidum chromosomal DNA indicated that this gene is present as a single copy. The organization of genes flanking the gyrB gene is unique in comparison to that of other bacteria. The gyrB gene encodes a 637 amino acid protein whose deduced sequence has a high degree of homology with type-II topoisomerase ATPase subunits (GyrB and ParE). Five type-II topoisomerase motifs, an ATP-binding site (Walker A), and amino acid residues that putatively interact with ATP, are highly conserved in the T. pallidum GyrB protein.
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