Working under collaborative support from the Nanoscale Science and Engineering Center devoted to the development of novel patterning and detection modalities, researchers at the University of Chicago and the University of Illinois recently reported methodologies advancing toward the goal of rapid and sensitive means for the high throughput screening of G-protein coupled receptors (GPCRs). Representing the targets for more than half of marketed human therapeutics, GPCRs are integral membrane proteins which were heretofore difficult to isolate in a stable and active form. Additionally, their low abundance in native tissues or heterologous expression systems mandates an extremely sensitive assay. Combining the Nanodisc technology developed in the Sligar laboratory and novel mass spectrometry method using self-assembled monolayers from Mrksich's group, senior scientists T. H. Bayburt and V. L. Marin reported the successful monitoring of G-protein binding to a Nanodisc assembled GPCR (Marin, V. L., Bayburt, T. H., Sligar, S. G., and Mrksich, M. (2007) "Functional Assays of Membrane-Bound Proteins with SAMDI-TOF Mass Spectrometry." Angew. Chem, Int. Ed 46, 8796-8798.). The work was recently highlighted in the "Analytical Currents" news section of Analytical Chemistry (80, 515, 2008). [February 2008] |
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