Bioaffinity Mass Spectrometry Screening

Ben Yang, Yunjiang Feng, Hoan Vu, B. P. McCormick, Jessica A. Rowley, Liliana Pedro, Gregory J. Crowther, Wesley C. Van Voorhis, Paul I. Forster, Ronald J. Quinn

SLAS DISCOVERY · 2016 · 23 citations · 14 references

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Abstract

Electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI-FTICR-MS or ESI-FTMS) was used to screen 192 natural product extracts and a 659-member natural product-based fragment library for bindings to a potential malaria drug target, Plasmodium falciparum Rab11a (PfRab11a, PF13_0119). One natural product extract and 11 fragments showed binding activity. A new natural product, arborside E, was identified from the active extract of Psydrax montigena as a weak binder. Its binding activity and inhibitory activity against PfRab11a were confirmed by ESI-FTMS titration experiments and an orthogonal enzyme assay.

References

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