Abstract:
:Soluble epoxide hydrolase (sEH) is a component of the arachidonic acid cascade and is a candidate target for therapies for hypertension or inflammation. Although many sEH inhibitors are available, their scaffolds are not structurally diverse, and knowledge of their specific interactions with sEH is limited. To obtain detailed structural information about protein-ligand interactions, we conducted fragment screening of sEH, analyzed the fragments using high-throughput X-ray crystallography, and determined 126 fragment-bound structures at high resolution. Aminothiazole and benzimidazole derivatives were identified as novel scaffolds that bind to the catalytic triad of sEH with good ligand efficiency. We further identified fragment hits that bound to subpockets of sEH called the short and long branches. The water molecule conserved in the structure plays an important role in binding to the long branch, whereas Asp496 and the main chain of Phe497 form hydrogen bonds with fragment hits in the short branch. Fragment hits and their crystal structures provide structural insights into ligand binding to sEH that will facilitate the discovery of novel and potent inhibitors of sEH.
journal_name
Bioorg Med Chemjournal_title
Bioorganic & medicinal chemistryauthors
Amano Y,Yamaguchi T,Tanabe Edoi
10.1016/j.bmc.2014.03.001subject
Has Abstractpub_date
2014-04-15 00:00:00pages
2427-34issue
8eissn
0968-0896issn
1464-3391pii
S0968-0896(14)00174-6journal_volume
22pub_type
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