Type IIA topoisomerase inhibition by a new class of antibacterial agents
2010
Enzymes that move along DNA, such as DNA and RNA polymerases, cause the DNA ahead of them to become supercoiled. This would lead to the DNA becoming overwound, were the stress not relieved by topoisomerases. Topoisomerase inhibitors have been used as antibacterial and anticancer drugs, but the structural basis for their activity has been unclear. Here, the crystal structures are presented of a topoisomerase on DNA, either alone or in the presence of a new type of antibiotic.
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