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Journal ArticleDOI

Bacterial topoisomerase inhibitors: quinolone and pyridone antibacterial agents.

Lester A. Mitscher
- 22 Jan 2005 - 
- Vol. 105, Iss: 2, pp 559-592
TLDR
Resume of Structure−Activity Relationships of Quinolones 573 5.11.1.
Abstract
3.1. Chelation 564 3.2. Acid−Base Character 564 3.3. Photochemistry 565 4. In Vitro Antimicrobial Spectra 566 5. Structure−Activity Relationships 568 5.1. N-1 Ethyl Family 568 5.2. N-1 Cyclopropyl Family 568 5.3. N-1 to C-8 Bridged (Tricyclic) Family 568 5.4. N-1 Aryl Family 569 5.5. Positions C-2, C-3, and C-4 570 5.6. C-4a Substituted Analogues 571 5.7. C-5 Substituents 571 5.8. C-6 Substituents 571 5.9. C-7 Substituents 571 5.9.1. Piperazinyl and Related Moieties 572 5.9.2. Pyrrolidinyl and Related Moieties 572 5.9.3. Cyclobutylaminyl and Related Moieties 572 5.9.4. Bicycloaminyl Moieties 572 5.9.5. Carbon-Linked Substituents 572 5.10. Substituents at C-8 573 5.11. Resume of Structure−Activity Relationships of Quinolones 573

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Journal ArticleDOI

Mechanism of quinolone action and resistance.

TL;DR: This review describes the development of the quinolones as antibacterials, the structure and function of gyrase and topoisomerase IV, and the mechanistic basis for quInolone action against their enzyme targets, and suggests approaches to designing new drugs that display improved activity against resistant strains.
Journal ArticleDOI

Drugging Topoisomerases: Lessons and Challenges

TL;DR: This review discusses how topoisomerase inhibitors kill cells by trapping topoisomersases on DNA rather than by classical enzymatic inhibition, and extends to a novel mechanism of action of PARP inhibitors and could be applied to the targeting of transcription factors.
Journal ArticleDOI

Fluorine in health care: Organofluorine containing blockbuster drugs

TL;DR: The top 10 fluorine containing pharmaceuticals (by US Sales in 2008) are highlighted in this article, where the structures and modes of action of these important drugs compounds are reviewed and representative synthetic routes are highlighted.
References
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Journal ArticleDOI

DNA topoisomerases: structure, function, and mechanism.

TL;DR: Surprisingly, despite little or no sequence homology, both type IA and type IIA topoisomerases from prokaryotes and the typeIIA enzymes from eukaryotes share structural folds that appear to reflect functional motifs within critical regions of the enzymes.
Journal ArticleDOI

Identification and Structural Characterization of the ATP/ADP-Binding Site in the Hsp90 Molecular Chaperone

TL;DR: Crystal structures of complexes between the N-terminal domain of the yeast Hsp90 chaperone and ADP/ATP unambiguously identify a specific adenine nucleotide binding site homologous to the ATP-binding site of DNA gyrase B, suggesting that geldanamycin acts by blocking the binding of nucleotides to Hsp 90 and not the binding to incompletely folded client polypeptides as previously suggested.
Journal ArticleDOI

DNA gyrase: an enzyme that introduces superhelical turns into DNA

TL;DR: Relaxed closed-circular DNA is converted to negatively supercoiled DNA by DNA gyrase by purified from Escherichia coli cells, and the final superhelix density of the DNA can be considerably greater than that found in intracellularly super coiled DNA.
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