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Published June 2012 | Supplemental Material
Journal Article Open

Genetically Encoded Photo-cross-linkers Map the Binding Site of an Allosteric Drug on a G Protein-Coupled Receptor

Abstract

G protein-coupled receptors (GPCRs) are dynamic membrane proteins that bind extracellular molecules to transduce signals. Although GPCRs represent the largest class of therapeutic targets, only a small percentage of their ligand-binding sites are precisely defined. Here we describe the novel application of targeted photo-cross-linking using unnatural amino acids to obtain structural information about the allosteric binding site of a small molecule drug, the CCR5-targeted HIV-1 co-receptor blocker maraviroc.

Additional Information

© 2012 American Chemical Society. Received: February 8, 2012. Accepted: March 28, 2012. Publication Date (Web): March 28, 2012. We wish to thank M. Teintze and E. Dratz for helpful discussions and for providing reagents for use in ongoing work. We also thank M. Kazmi and K. Thapa for scientific assistance. W.A.G. acknowledges support in part through funding from PharmSelex and in part through gifts to the Materials and Process Simulation Center at Caltech. The Tri-Institutional Training Program in Chemical Biology supports A.G. The authors declare no competing financial interest.

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