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Journal of medicinal chemistry

NMR screening applied to the fragment-based generation of inhibitors of creatine kinase exploiting a new interaction proximate to the ATP binding site.


PMID 17375903

Abstract

Using an in-house fragment NMR library, we identified a set of ligands that bind rabbit muscular creatine kinase, an enzyme involved in key ATP-dependent processes. The ligands docked to the crystal structures of creatine kinase indicated that a phenylfuroic acid could enter into a pocket adjacent to the nucleotide binding site. This fragment served as an anchor to develop in silico a series of potential inhibitors which could partly access the nucleotide binding site. The short synthesis of only four derivatives provided entirely novel hit compounds that reversibly inhibit creatine kinase at micromolar concentrations with a mixed ATP-competitive/noncompetitive mechanism in agreement with the structural model of the inhibited enzyme. These initial biologically active compounds are novel and modular and exploit a new interaction proximate to the ATP binding site.

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