Abstract
Background: X-ray crystal structures of fluoroquinolone-gyrase-DNA complexes reveal a single drug-binding mode. Results: A ciprofloxacin derivative with a chloroacetyl moiety at the C-7 end cross-linked with cysteine substitutions in both GyrA and GyrB that were 17 A apart. Conclusion: Cleaved complexes containing gyrase have two fluoroquinolone-binding modes. Significance: The additional drug-binding mode provides new ways to investigate inhibitor-topoisomerase interactions.
Original language | English (US) |
---|---|
Pages (from-to) | 12300-12312 |
Number of pages | 13 |
Journal | Journal of Biological Chemistry |
Volume | 289 |
Issue number | 18 |
DOIs | |
State | Published - 2014 |