Abstract:
:mPTPB is a virulent phosphatase from Mycobacterium tuberculosis and a promising therapeutic target for tuberculosis. To facilitate mPTPB-based drug discovery, we identified α-sulfophenylacetic amide (SPAA) from cefsulodin, a third generation β-lactam cephalosporin antibiotic, as a novel pTyr pharmacophore for mPTPB. Structure-guided and fragment-based optimization of SPAA led to the most potent and selective mPTPB inhibitor 9, with a K i of 7.9 nM and more than 10,000-fold preference for mPTPB over a large panel of 25 phosphatases. Compound 9 also exhibited excellent cellular activity and specificity in blocking mPTPB function in macrophage. Given its novel structure, modest molecular mass, and extremely high ligand efficiency (0.46), compound 9 represents an outstanding lead compound for anti-TB drug discovery targeting mPTPB.
journal_name
ACS Med Chem Lettjournal_title
ACS medicinal chemistry lettersauthors
He R,Yu ZH,Zhang RY,Wu L,Gunawan AM,Zhang ZYdoi
10.1021/acsmedchemlett.5b00373subject
Has Abstractpub_date
2015-11-03 00:00:00pages
1231-5issue
12issn
1948-5875journal_volume
6pub_type
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