Structures of Tetrahydrobiopterin Binding-Site Mutants of Inducible Nitric Oxide Synthase Oxygenase Dimer and Implicated Roles of Trp457†,‡

Biochemistry ◽  
2001 ◽  
Vol 40 (43) ◽  
pp. 12826-12832 ◽  
Author(s):  
Mika Aoyagi ◽  
Andrew S. Arvai ◽  
Sanjay Ghosh ◽  
Dennis J. Stuehr ◽  
John A. Tainer ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Nitric Oxide Synthase ◽  
Binding Site ◽  
Inducible Nitric Oxide Synthase ◽  
Oxide Synthase ◽  
Inducible Nitric Oxide

scholarly journals Mutational Analysis of the Tetrahydrobiopterin-binding Site in Inducible Nitric-oxide Synthase

1999 ◽  
Vol 274 (34) ◽  
pp. 24100-24112 ◽  
Author(s):  
Sanjay Ghosh ◽  
Dennis Wolan ◽  
Subrata Adak ◽  
Brian R. Crane ◽  
Nyoun Soo Kwon ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Nitric Oxide Synthase ◽  
Binding Site ◽  
Inducible Nitric Oxide Synthase ◽  
Mutational Analysis ◽  
Oxide Synthase ◽  
Inducible Nitric Oxide

289: Roles of Inducible Nitric Oxide Synthase in Voiding Function and Bladder Pain During Experimental Cystitis

2006 ◽  
Vol 175 (4S) ◽  
pp. 96-96
Author(s):  
Masayoshi Nomura ◽  
Hisae Nishii ◽  
Masato Tsutsui ◽  
Naohiro Fujimoto ◽  
Tetsuro Matsumoto
Keyword(s):  
Nitric Oxide ◽  
Nitric Oxide Synthase ◽  
Inducible Nitric Oxide Synthase ◽  
Voiding Function ◽  
Bladder Pain ◽  
Oxide Synthase ◽  
Inducible Nitric Oxide

Search for Potential Inducible Nitric Oxide Synthase Inhibitors with Favorable ADMET Profiles for the Therapy of Helicobacter pylori Infections

2020 ◽  
Vol 19 (30) ◽  
pp. 2795-2804 ◽  
Author(s):  
Ricardo Pereira Rodrigues ◽  
Juliana Santa Ardisson ◽  
Rita de Cássia Ribeiro Gonçalves ◽  
Tiago Branquinho Oliveira ◽  
Vinicius Barreto da Silva ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Helicobacter Pylori ◽  
Nitric Oxide Synthase ◽  
Inducible Nitric Oxide Synthase ◽  
Crucial Role ◽  
Chemical Space ◽  
Target Selection ◽  
Oxide Synthase ◽  
Inos Inhibition ◽  
Inducible Nitric Oxide

Background: Helicobacter pylori is a gram-negative bacterium related to chronic gastritis, peptic ulcer and gastric carcinoma. During its infection process, promotes excessive inflammatory response, increasing the release of reactive species and inducing the production of pro-inflammatory mediators. Inducible Nitric Oxide Synthase (iNOS) plays a crucial role in the gastric carcinogenesis process and a key mediator of inflammation and host defense systems, which is expressed in macrophages induced by inflammatory stimuli. In chronic diseases such as Helicobacter pylori infections, the overproduction of NO due to the prolonged induction of iNOS is of major concern. Objective: In this sense, the search for potential iNOS inhibitors is a valuable strategy in the overall process of Helicobacter pylori pathogeny. Method: In silico techniques were applied in the search of interesting compounds against Inducible Nitric Oxide Synthase enzyme in a chemical space of natural products and derivatives from the Analyticon Discovery databases. Results: The five compounds with the best iNOS inhibition profile were selected for activity and toxicity predictions. Compound 9 (CAS 88198-99-6) displayed significant potential for iNOS inhibition, forming hydrogen bonds with residues from the active site and an ionic interaction with heme. This compound also displayed good bioavailability and absence of toxicity/or from its probable metabolites. Conclusion: The top-ranked compounds from the virtual screening workflow show promising results regarding the iNOS inhibition profile. The results evidenced the importance of the ionic bonding during docking selection, playing a crucial role in binding and positioning during ligand-target selection for iNOS.

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