Fragment-Based Substrate Activity Screening Method for the Identification of Potent Inhibitors of the <i>Mycobacterium tuberculosis</i> Phosphatase PtpB
作者:Matthew B. Soellner、Katherine A. Rawls、Christoph Grundner、Tom Alber、Jonathan A. Ellman
DOI:10.1021/ja0727520
日期:2007.8.1
A newsubstrate-based fragment approach for the identification of novel PTP inhibitors is presented. This method was applied to Mycobacterium tuberculosis PtpB, a promising new target for the treatment of tuberculosis. This resulted in the development of the most potent PtpB inhibitor reported to date (0.22 μM) with low molecular weight and good selectivity against a panel of other protein tyrosine
The Effects of Buffers on the Thermodynamics and Kinetics of Binding between Positively-Charged Cyclodextrins and Phosphate Ester Guests
作者:Mousumi Ghosh、Rui Zhang、Ronald G. Lawler、Christopher T. Seto
DOI:10.1021/jo991616d
日期:2000.2.1
the binding interaction. Negatively charged buffers such as phosphate and ADA (N-(2-acetamido)iminodiacetic acid) compete with the phosphate ester guests for binding to the positively charged cyclodextrins. This competition lowers the effective association constant between host and guest. Positively charged buffers such as Tris-HCl do not strongly compete and are thus more conducive to binding. The