DNA gyrase is an essential topoisomerase found in all bacteria. It is encoded bygyrB andgyrA genes. These genes are organized differently in different bacteria. Direct comparison ofMycobacterium tuberculosis andMycobacterium smegmatis genomes reveals presence of an additionalgyrB inM. smegmatis flanked by novel genes. Analysis of the amino acid sequence of GyrB from different organisms suggests that the orphan GyrB inM. smegmatis may have an important cellular role.
Volume 99, 2020
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