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Structure-based design of bacterial nitric oxide synthase inhibitors

Journal Article · · Journal of Medicinal Chemistry
DOI:https://doi.org/10.1021/jm501723p· OSTI ID:1347698

Inhibition of bacterial nitric oxide synthase (bNOS) has the potential to improve the efficacy of antimicrobials used to treat infections by Gram-positive pathogens Staphylococcus aureus and Bacillus anthracis. However, inhibitor specificity toward bNOS over the mammalian NOS (mNOS) isoforms remains a challenge because of the near identical NOS active sites. One key structural difference between the NOS isoforms is the amino acid composition of the pterin cofactor binding site that is adjacent to the NOS active site. Previously, we demonstrated that a NOS inhibitor targeting both the active and pterin sites was potent and functioned as an antimicrobial. Here we present additional crystal structures, binding analyses, and bacterial killing studies of inhibitors that target both the active and pterin sites of a bNOS and function as antimicrobials. Lastly, these data provide a framework for continued development of bNOS inhibitors, as each molecule represents an excellent chemical scaffold for the design of isoform selective bNOS inhibitors.

Research Organization:
Univ. of California, Irvine, CA (United States); Northwestern Univ., Evanston, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23); National Inst. of Health (NIH) (United States)
OSTI ID:
1347698
Journal Information:
Journal of Medicinal Chemistry, Journal Name: Journal of Medicinal Chemistry Journal Issue: 2 Vol. 58; ISSN 0022-2623
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (9)

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Secretome of Intestinal Bacilli: A Natural Guard against Pathologies journal September 2017
Cu-Catalyzed switchable synthesis of functionalized pyridines and pyrroles journal January 2018
The latest advances in the discovery of nitric oxide hybrid drug compounds journal June 2017
S taphylococcus aureus nitric oxide synthase (sa NOS ) modulates aerobic respiratory metabolism and cell physiology journal May 2017
Nitric oxide synthase inhibitors journal July 2000
Nitric Oxide Synthase Inhibitors: Future Therapies for CNS Disorders? journal January 1996
Nitric Oxide Synthase Inhibitors book May 2017
Structure-based design of bacterial nitric oxide synthase inhibitors. dataset January 2016

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