In heterogeneous catalysis, catalysts provide a surface to which reactants bind in a process of adsorption. The reactant in an enzyme-catalyzed reaction is called a substrate. COA of Formula: C10H7BrO2S, C10H7BrO2S. A document type is Article, introducing its new discovery., COA of Formula: C10H7BrO2S
The emergence of CTX-M class A extended-spectrum beta-lactamases poses a serious health threat to the public. We have applied structure-based design to improve the potency of a novel noncovalent tetrazole-containing CTX-M inhibitor (Ki = 21 muM) more than 200-fold via structural modifications targeting two binding hot spots, a hydrophobic shelf formed by Pro167 and a polar site anchored by Asp240. Functional groups contacting each binding hot spot independently in initial designs were later combined to produce analogues with submicromolar potencies, including 6-trifluoromethyl-3H-benzoimidazole-4- carboxylic acid [3-(1H-tetrazol-5-yl)-phenyl]-amide, which had a Ki value of 89 nM and reduced the MIC of cefotaxime by 64-fold in CTX-M-9 expressing Escherichia coli. The in vitro potency gains were accompanied by improvements in ligand efficiency (from 0.30 to 0.39) and LipE (from 1.37 to 3.86). These new analogues represent the first nM-affinity noncovalent inhibitors of a class A beta-lactamase. Their complex crystal structures provide valuable information about ligand binding for future inhibitor design.
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Reference：
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem