2y3p Citations

A crystal structure of the bifunctional antibiotic simocyclinone D8, bound to DNA gyrase.

Abstract

Simocyclinones are bifunctional antibiotics that inhibit bacterial DNA gyrase by preventing DNA binding to the enzyme. We report the crystal structure of the complex formed between the N-terminal domain of the Escherichia coli gyrase A subunit and simocyclinone D8, revealing two binding pockets that separately accommodate the aminocoumarin and polyketide moieties of the antibiotic. These are close to, but distinct from, the quinolone-binding site, consistent with our observations that several mutations in this region confer resistance to both agents. Biochemical studies show that the individual moieties of simocyclinone D8 are comparatively weak inhibitors of gyrase relative to the parent compound, but their combination generates a more potent inhibitor. Our results should facilitate the design of drug molecules that target these unexploited binding pockets.

Reviews - 2y3p mentioned but not cited (1)

  1. Topoisomerases as anticancer targets. Delgado JL, Hsieh CM, Chan NL, Hiasa H. Biochem J 475 373-398 (2018)

Articles - 2y3p mentioned but not cited (3)

  1. A new crystal structure of the bifunctional antibiotic simocyclinone D8 bound to DNA gyrase gives fresh insight into the mechanism of inhibition. Hearnshaw SJ, Edwards MJ, Stevenson CE, Lawson DM, Maxwell A. J Mol Biol 426 2023-2033 (2014)
  2. Identification of novel bacterial DNA gyrase inhibitors: An in silico study. Rahimi H, Najafi A, Eslami H, Negahdari B, Moghaddam MM. Res Pharm Sci 11 250-258 (2016)
  3. s-Triazine Derivatives Functionalized with Alkylating 2-Chloroethylamine Fragments as Promising Antimicrobial Agents: Inhibition of Bacterial DNA Gyrases, Molecular Docking Studies, and Antibacterial and Antifungal Activity. Maliszewski D, Demirel R, Wróbel A, Baradyn M, Ratkiewicz A, Drozdowska D. Pharmaceuticals (Basel) 16 1248 (2023)


Reviews citing this publication (13)

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Articles citing this publication (33)

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  13. Fragments of the bacterial toxin microcin B17 as gyrase poisons. Collin F, Thompson RE, Jolliffe KA, Payne RJ, Maxwell A. PLoS One 8 e61459 (2013)
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  19. Mapping simocyclinone D8 interaction with DNA gyrase: evidence for a new binding site on GyrB. Sissi C, Vazquez E, Chemello A, Mitchenall LA, Maxwell A, Palumbo M. Antimicrob Agents Chemother 54 213-220 (2010)
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  22. Substrate-Assisted Catalysis in Polyketide Reduction Proceeds via a Phenolate Intermediate. Schäfer M, Stevenson CEM, Wilkinson B, Lawson DM, Buttner MJ. Cell Chem Biol 23 1091-1097 (2016)
  23. Investigation of Nalidixic Acid Resistance Mechanism in Salmonella enterica Using Molecular Simulation Techniques. Preethi B, Shanthi V, Ramanathan K. Appl Biochem Biotechnol 177 528-540 (2015)
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  26. SimC7 Is a Novel NAD(P)H-Dependent Ketoreductase Essential for the Antibiotic Activity of the DNA Gyrase Inhibitor Simocyclinone. Schäfer M, Le TB, Hearnshaw SJ, Maxwell A, Challis GL, Wilkinson B, Buttner MJ. J Mol Biol 427 2192-2204 (2015)
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Related citations provided by authors (1)

  1. Crystallization and preliminary X-ray analysis of a complex formed between the antibiotic simocyclinone D8 and the DNA breakage-reunion domain of Escherichia coli DNA gyrase.. Edwards MJ, Flatman RH, Mitchenall LA, Stevenson CE, Maxwell A, Lawson DM Acta Crystallogr Sect F Struct Biol Cryst Commun 65 846-8 (2009)